Implement the retry-on-ERANGE for the get*_r().

The buffer will keep doubling until 64k.

p4raw-id: //depot/perl@15272

1 files changed, 240 insertions, 89 deletions

diff --git a/reentr.h b/reentr.h
index 310fe97ecf..6060fb7ed3 100644
--- a/reentr.h
+++ b/reentr.h
@@ -161,6 +161,32 @@
 
 /* Defines for indicating which special features are supported. */
 
+/* The getgrent getgrgid getgrnam using buffer? */
+
+#if defined(HAS_GETGRENT_R) && (GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBWR || GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBIR || GETGRENT_R_PROTO == REENTRANT_PROTO_S_SBW || GETGRENT_R_PROTO == REENTRANT_PROTO_S_SBI || GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBI || GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBIH)
+#   define GETGRENT_R_HAS_BUFFER
+#else
+#   undef  GETGRENT_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETGRGID_R) && (GETGRGID_R_PROTO == REENTRANT_PROTO_I_TSBWR || GETGRGID_R_PROTO == REENTRANT_PROTO_I_TSBIR || GETGRGID_R_PROTO == REENTRANT_PROTO_I_TSBI || GETGRGID_R_PROTO == REENTRANT_PROTO_S_TSBI)
+#   define GETGRGID_R_HAS_BUFFER
+#else
+#   undef  GETGRGID_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETGRNAM_R) && (GETGRNAM_R_PROTO == REENTRANT_PROTO_I_CSBWR || GETGRNAM_R_PROTO == REENTRANT_PROTO_I_CSBIR || GETGRNAM_R_PROTO == REENTRANT_PROTO_S_CBI || GETGRNAM_R_PROTO == REENTRANT_PROTO_I_CSBI || GETGRNAM_R_PROTO == REENTRANT_PROTO_S_CSBI)
+#   define GETGRNAM_R_HAS_BUFFER
+#else
+#   undef  GETGRNAM_R_HAS_BUFFER
+#endif
+
+/* Any of the getgrent getgrgid getgrnam using buffer? */
+
+#if (defined(GETGRENT_R_HAS_BUFFER) || defined(GETGRGID_R_HAS_BUFFER) || defined(GETGRNAM_R_HAS_BUFFER))
+#   define USE_GETGRENT_BUFFER
+#else
+#   undef  USE_GETGRENT_BUFFER
+#endif
+
 /* The getgrent getgrgid getgrnam using ptr? */
 
 #if defined(HAS_GETGRENT_R) && (GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBWR || GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBIR)
@@ -261,6 +287,27 @@
 #   undef  USE_GETPWENT_FPTR
 #endif
 
+/* The getpwent getpwgid getpwnam using buffer? */
+
+#if defined(HAS_GETPWENT_R) && (GETPWENT_R_PROTO == REENTRANT_PROTO_I_SBWR || GETPWENT_R_PROTO == REENTRANT_PROTO_I_SBIR || GETPWENT_R_PROTO == REENTRANT_PROTO_S_SBW || GETPWENT_R_PROTO == REENTRANT_PROTO_S_SBI || GETPWENT_R_PROTO == REENTRANT_PROTO_I_SBI || GETPWENT_R_PROTO == REENTRANT_PROTO_I_SBIH)
+#   define GETPWENT_R_HAS_BUFFER
+#else
+#   undef  GETPWENT_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETPWNAM_R) && (GETPWNAM_R_PROTO == REENTRANT_PROTO_I_CSBWR || GETPWNAM_R_PROTO == REENTRANT_PROTO_I_CSBIR || GETPWNAM_R_PROTO == REENTRANT_PROTO_S_CSBI || GETPWNAM_R_PROTO == REENTRANT_PROTO_I_CSBI)
+#   define GETPWNAM_R_HAS_BUFFER
+#else
+#   undef  GETPWNAM_R_HAS_BUFFER
+#endif
+
+/* Any of the getpwent getpwgid getpwnam using buffer? */
+
+#if (defined(GETPWENT_R_HAS_BUFFER) || defined(GETPWGID_R_HAS_BUFFER) || defined(GETPWNAM_R_HAS_BUFFER))
+#   define USE_GETPWENT_BUFFER
+#else
+#   undef  USE_GETPWENT_BUFFER
+#endif
+
 /* The gethostent gethostbyaddr gethostbyname using ptr? */
 
 #if defined(HAS_GETHOSTENT_R) && (GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBWRE)
@@ -365,6 +412,110 @@
 #   undef  USE_GETSERVENT_PTR
 #endif
 
+/* The gethostent gethostbyaddr gethostbyname using buffer? */
+
+#if defined(HAS_GETHOSTENT_R) && (GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBWRE || GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBIE || GETHOSTENT_R_PROTO == REENTRANT_PROTO_S_SBIE || GETHOSTENT_R_PROTO == REENTRANT_PROTO_S_SBI || GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBI)
+#   define GETHOSTENT_R_HAS_BUFFER
+#else
+#   undef  GETHOSTENT_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETHOSTBYADDR_R) && (GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_I_CWISBWRE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CWISBWIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CWISBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_TWISBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CIISBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CSBIE || GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_TSBIE)
+#   define GETHOSTBYADDR_R_HAS_BUFFER
+#else
+#   undef  GETHOSTBYADDR_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETHOSTBYNAME_R) && (GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWRE || GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBIE)
+#   define GETHOSTBYNAME_R_HAS_BUFFER
+#else
+#   undef  GETHOSTBYNAME_R_HAS_BUFFER
+#endif
+
+/* Any of the gethostent gethostbyaddr gethostbyname using buffer? */
+
+#if (defined(GETHOSTENT_R_HAS_BUFFER) || defined(GETHOSTBYADDR_R_HAS_BUFFER) || defined(GETHOSTBYNAME_R_HAS_BUFFER))
+#   define USE_GETHOSTENT_BUFFER
+#else
+#   undef  USE_GETHOSTENT_BUFFER
+#endif
+
+/* The getnetent getnetbyaddr getnetbyname using buffer? */
+
+#if defined(HAS_GETNETENT_R) && (GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBWRE || GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBIE || GETNETENT_R_PROTO == REENTRANT_PROTO_S_SBIE || GETNETENT_R_PROTO == REENTRANT_PROTO_S_SBI || GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBI)
+#   define GETNETENT_R_HAS_BUFFER
+#else
+#   undef  GETNETENT_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETNETBYADDR_R) && (GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_UISBWRE || GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_LISBI || GETNETBYADDR_R_PROTO == REENTRANT_PROTO_S_TISBI || GETNETBYADDR_R_PROTO == REENTRANT_PROTO_S_LISBI)
+#   define GETNETBYADDR_R_HAS_BUFFER
+#else
+#   undef  GETNETBYADDR_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETNETBYNAME_R) && (GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWRE || GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBI || GETNETBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBI)
+#   define GETNETBYNAME_R_HAS_BUFFER
+#else
+#   undef  GETNETBYNAME_R_HAS_BUFFER
+#endif
+
+/* Any of the getnetent getnetbyaddr getnetbyname using buffer? */
+
+#if (defined(GETNETENT_R_HAS_BUFFER) || defined(GETNETBYADDR_R_HAS_BUFFER) || defined(GETNETBYNAME_R_HAS_BUFFER))
+#   define USE_GETNETENT_BUFFER
+#else
+#   undef  USE_GETNETENT_BUFFER
+#endif
+
+/* The getprotoent getprotobyname getprotobynumber using buffer? */
+
+#if defined(HAS_GETPROTOENT_R) && (GETPROTOENT_R_PROTO == REENTRANT_PROTO_I_SBWR || GETPROTOENT_R_PROTO == REENTRANT_PROTO_I_SBI || GETPROTOENT_R_PROTO == REENTRANT_PROTO_S_SBI)
+#   define GETPROTOENT_R_HAS_BUFFER
+#else
+#   undef  GETPROTOENT_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETPROTOBYNAME_R) && (GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWR || GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBI)
+#   define GETPROTOBYNAME_R_HAS_BUFFER
+#else
+#   undef  GETPROTOBYNAME_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETPROTOBYNUMBER_R) && (GETPROTOBYNUMBER_R_PROTO == REENTRANT_PROTO_I_ISBWR || GETPROTOBYNUMBER_R_PROTO == REENTRANT_PROTO_S_ISBI)
+#   define GETPROTOBYNUMBER_R_HAS_BUFFER
+#else
+#   undef  GETPROTOBYNUMBER_R_HAS_BUFFER
+#endif
+
+/* Any of the getprotoent getprotobyname getprotobynumber using buffer? */
+
+#if (defined(GETPROTOENT_R_HAS_BUFFER) || defined(GETPROTOBYNAME_R_HAS_BUFFER) || defined(GETPROTOBYNUMBER_R_HAS_BUFFER))
+#   define USE_GETPROTOENT_BUFFER
+#else
+#   undef  USE_GETPROTOENT_BUFFER
+#endif
+
+/* The getservent getservbyname getservbyport using buffer? */
+
+#if defined(HAS_GETSERVENT_R) && (GETSERVENT_R_PROTO == REENTRANT_PROTO_I_SBWR || GETSERVENT_R_PROTO == REENTRANT_PROTO_I_SBI || GETSERVENT_R_PROTO == REENTRANT_PROTO_S_SBI)
+#   define GETSERVENT_R_HAS_BUFFER
+#else
+#   undef  GETSERVENT_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETSERVBYNAME_R) && (GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSBWR || GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_S_CCSBI)
+#   define GETSERVBYNAME_R_HAS_BUFFER
+#else
+#   undef  GETSERVBYNAME_R_HAS_BUFFER
+#endif
+#if defined(HAS_GETSERVBYPORT_R) && (GETSERVBYPORT_R_PROTO == REENTRANT_PROTO_I_ICSBWR || GETSERVBYPORT_R_PROTO == REENTRANT_PROTO_S_ICSBI)
+#   define GETSERVBYPORT_R_HAS_BUFFER
+#else
+#   undef  GETSERVBYPORT_R_HAS_BUFFER
+#endif
+
+/* Any of the getservent getservbyname getservbyport using buffer? */
+
+#if (defined(GETSERVENT_R_HAS_BUFFER) || defined(GETSERVBYNAME_R_HAS_BUFFER) || defined(GETSERVBYPORT_R_HAS_BUFFER))
+#   define USE_GETSERVENT_BUFFER
+#else
+#   undef  USE_GETSERVENT_BUFFER
+#endif
+
 /* The gethostent gethostbyaddr gethostbyname using errno? */
 
 #if defined(HAS_GETHOSTENT_R) && (GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBWRE || GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBIE || GETHOSTENT_R_PROTO == REENTRANT_PROTO_S_SBIE)
@@ -684,136 +835,136 @@ typedef struct {
 #ifdef HAS_GETGRENT_R
 #   undef getgrent
 #   if !defined(getgrent) && GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBWR
-#       define getgrent() (((errno = getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : 0)
+#       define getgrent() (((errno = getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getgrent") : 0))
 #   endif
 #   if !defined(getgrent) && GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBIR
-#       define getgrent() (((errno = getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : 0)
+#       define getgrent() (((errno = getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getgrent") : 0))
 #   endif
 #   if !defined(getgrent) && GETGRENT_R_PROTO == REENTRANT_PROTO_S_SBW
-#       define getgrent() (getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? &PL_reentrant_buffer->_getgrent_struct : 0)
+#       define getgrent() (getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? &PL_reentrant_buffer->_getgrent_struct : (errno == ERANGE ? Perl_reentrant_retry("getgrent") : 0))
 #   endif
 #   if !defined(getgrent) && GETGRENT_R_PROTO == REENTRANT_PROTO_S_SBI
-#       define getgrent() (getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? &PL_reentrant_buffer->_getgrent_struct : 0)
+#       define getgrent() (getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? &PL_reentrant_buffer->_getgrent_struct : (errno == ERANGE ? Perl_reentrant_retry("getgrent") : 0))
 #   endif
 #   if !defined(getgrent) && GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBI
-#       define getgrent() (((errno = getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size))) == 0 ? &PL_reentrant_buffer->_getgrent_struct : 0)
+#       define getgrent() (((errno = getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size))) == 0 ? &PL_reentrant_buffer->_getgrent_struct : (errno == ERANGE ? Perl_reentrant_retry("getgrent") : 0))
 #   endif
 #   if !defined(getgrent) && GETGRENT_R_PROTO == REENTRANT_PROTO_I_SBIH
-#       define getgrent() (((errno = getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_fptr))) == 0 ? &PL_reentrant_buffer->_getgrent_struct : 0)
+#       define getgrent() (((errno = getgrent_r(&PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_fptr))) == 0 ? &PL_reentrant_buffer->_getgrent_struct : (errno == ERANGE ? Perl_reentrant_retry("getgrent") : 0))
 #   endif
 #endif /* HAS_GETGRENT_R */
 
 #ifdef HAS_GETGRGID_R
 #   undef getgrgid
 #   if !defined(getgrgid) && GETGRGID_R_PROTO == REENTRANT_PROTO_I_TSBWR
-#       define getgrgid(a) (((errno = getgrgid_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : 0)
+#       define getgrgid(a) (((errno = getgrgid_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getgrgid", a) : 0))
 #   endif
 #   if !defined(getgrgid) && GETGRGID_R_PROTO == REENTRANT_PROTO_I_TSBIR
-#       define getgrgid(a) (((errno = getgrgid_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : 0)
+#       define getgrgid(a) (((errno = getgrgid_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getgrgid", a) : 0))
 #   endif
 #   if !defined(getgrgid) && GETGRGID_R_PROTO == REENTRANT_PROTO_I_TSBI
-#       define getgrgid(a) (((errno = getgrgid_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size))) == 0 ? &PL_reentrant_buffer->_getgrent_struct : 0)
+#       define getgrgid(a) (((errno = getgrgid_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size))) == 0 ? &PL_reentrant_buffer->_getgrent_struct : (errno == ERANGE ? Perl_reentrant_retry("getgrgid", a) : 0))
 #   endif
 #   if !defined(getgrgid) && GETGRGID_R_PROTO == REENTRANT_PROTO_S_TSBI
-#       define getgrgid(a) (getgrgid_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? &PL_reentrant_buffer->_getgrent_struct : 0)
+#       define getgrgid(a) (getgrgid_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? &PL_reentrant_buffer->_getgrent_struct : (errno == ERANGE ? Perl_reentrant_retry("getgrgid", a) : 0))
 #   endif
 #endif /* HAS_GETGRGID_R */
 
 #ifdef HAS_GETGRNAM_R
 #   undef getgrnam
 #   if !defined(getgrnam) && GETGRNAM_R_PROTO == REENTRANT_PROTO_I_CSBWR
-#       define getgrnam(a) (((errno = getgrnam_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : 0)
+#       define getgrnam(a) (((errno = getgrnam_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getgrnam", a) : 0))
 #   endif
 #   if !defined(getgrnam) && GETGRNAM_R_PROTO == REENTRANT_PROTO_I_CSBIR
-#       define getgrnam(a) (((errno = getgrnam_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : 0)
+#       define getgrnam(a) (((errno = getgrnam_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, &PL_reentrant_buffer->_getgrent_ptr))) == 0 ? PL_reentrant_buffer->_getgrent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getgrnam", a) : 0))
 #   endif
 #   if !defined(getgrnam) && GETGRNAM_R_PROTO == REENTRANT_PROTO_S_CBI
-#       define getgrnam(a) (getgrnam_r(a, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? PL_reentrant_buffer->_getgrent_buffer : 0)
+#       define getgrnam(a) (getgrnam_r(a, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? PL_reentrant_buffer->_getgrent_buffer : (errno == ERANGE ? Perl_reentrant_retry("getgrnam", a) : 0))
 #   endif
 #   if !defined(getgrnam) && GETGRNAM_R_PROTO == REENTRANT_PROTO_I_CSBI
-#       define getgrnam(a) (((errno = getgrnam_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size))) == 0 ? &PL_reentrant_buffer->_getgrent_struct : 0)
+#       define getgrnam(a) (((errno = getgrnam_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size))) == 0 ? &PL_reentrant_buffer->_getgrent_struct : (errno == ERANGE ? Perl_reentrant_retry("getgrnam", a) : 0))
 #   endif
 #   if !defined(getgrnam) && GETGRNAM_R_PROTO == REENTRANT_PROTO_S_CSBI
-#       define getgrnam(a) (getgrnam_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? &PL_reentrant_buffer->_getgrent_struct : 0)
+#       define getgrnam(a) (getgrnam_r(a, &PL_reentrant_buffer->_getgrent_struct, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size) ? &PL_reentrant_buffer->_getgrent_struct : (errno == ERANGE ? Perl_reentrant_retry("getgrnam", a) : 0))
 #   endif
 #endif /* HAS_GETGRNAM_R */
 
 #ifdef HAS_GETHOSTBYADDR_R
 #   undef gethostbyaddr
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_I_CWISBWRE
-#       define gethostbyaddr(a, b, c) (((errno = gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_ptr, &PL_reentrant_buffer->_gethostent_errno))) == 0 ? PL_reentrant_buffer->_gethostent_ptr : 0)
+#       define gethostbyaddr(a, b, c) (((errno = gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_ptr, &PL_reentrant_buffer->_gethostent_errno))) == 0 ? PL_reentrant_buffer->_gethostent_ptr : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CWISBWIE
-#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CWISBIE
-#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_TWISBIE
-#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CIISBIE
-#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_CSBIE
-#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? 1 : 0)
+#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? 1 : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_S_TSBIE
-#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? 1 : 0)
+#       define gethostbyaddr(a, b, c) (gethostbyaddr_r(a, b, c, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? 1 : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_I_CWISD
-#       define gethostbyaddr(a, b, c) (((errno = gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, &PL_reentrant_buffer->_gethostent_data))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostbyaddr(a, b, c) (((errno = gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, &PL_reentrant_buffer->_gethostent_data))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_I_CIISD
-#       define gethostbyaddr(a, b, c) (((errno = gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, &PL_reentrant_buffer->_gethostent_data))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostbyaddr(a, b, c) (((errno = gethostbyaddr_r(a, b, c, &PL_reentrant_buffer->_gethostent_struct, &PL_reentrant_buffer->_gethostent_data))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #   if !defined(gethostbyaddr) && GETHOSTBYADDR_R_PROTO == REENTRANT_PROTO_I_CII
-#       define gethostbyaddr(a, b, c) (((errno = gethostbyaddr_r(a, b, c))) == 0 ? 1 : 0)
+#       define gethostbyaddr(a, b, c) (((errno = gethostbyaddr_r(a, b, c))) == 0 ? 1 : (errno == ERANGE ? Perl_reentrant_retry("gethostbyaddr", a, b, c) : 0))
 #   endif
 #endif /* HAS_GETHOSTBYADDR_R */
 
 #ifdef HAS_GETHOSTBYNAME_R
 #   undef gethostbyname
 #   if !defined(gethostbyname) && GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWRE
-#       define gethostbyname(a) (((errno = gethostbyname_r(a, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_ptr, &PL_reentrant_buffer->_gethostent_errno))) == 0 ? PL_reentrant_buffer->_gethostent_ptr : 0)
+#       define gethostbyname(a) (((errno = gethostbyname_r(a, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_ptr, &PL_reentrant_buffer->_gethostent_errno))) == 0 ? PL_reentrant_buffer->_gethostent_ptr : (errno == ERANGE ? Perl_reentrant_retry("gethostbyname", a) : 0))
 #   endif
 #   if !defined(gethostbyname) && GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBIE
-#       define gethostbyname(a) (gethostbyname_r(a, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostbyname(a) (gethostbyname_r(a, &PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostbyname", a) : 0))
 #   endif
 #   if !defined(gethostbyname) && GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD
-#       define gethostbyname(a) (((errno = gethostbyname_r(a, &PL_reentrant_buffer->_gethostent_struct, &PL_reentrant_buffer->_gethostent_data))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostbyname(a) (((errno = gethostbyname_r(a, &PL_reentrant_buffer->_gethostent_struct, &PL_reentrant_buffer->_gethostent_data))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostbyname", a) : 0))
 #   endif
 #endif /* HAS_GETHOSTBYNAME_R */
 
 #ifdef HAS_GETHOSTENT_R
 #   undef gethostent
 #   if !defined(gethostent) && GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBWRE
-#       define gethostent() (((errno = gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_ptr, &PL_reentrant_buffer->_gethostent_errno))) == 0 ? PL_reentrant_buffer->_gethostent_ptr : 0)
+#       define gethostent() (((errno = gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_ptr, &PL_reentrant_buffer->_gethostent_errno))) == 0 ? PL_reentrant_buffer->_gethostent_ptr : (errno == ERANGE ? Perl_reentrant_retry("gethostent") : 0))
 #   endif
 #   if !defined(gethostent) && GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBIE
-#       define gethostent() (((errno = gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostent() (((errno = gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostent") : 0))
 #   endif
 #   if !defined(gethostent) && GETHOSTENT_R_PROTO == REENTRANT_PROTO_S_SBIE
-#       define gethostent() (gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostent() (gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, &PL_reentrant_buffer->_gethostent_errno) ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostent") : 0))
 #   endif
 #   if !defined(gethostent) && GETHOSTENT_R_PROTO == REENTRANT_PROTO_S_SBI
-#       define gethostent() (gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size) ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostent() (gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size) ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostent") : 0))
 #   endif
 #   if !defined(gethostent) && GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SBI
-#       define gethostent() (((errno = gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostent() (((errno = gethostent_r(&PL_reentrant_buffer->_gethostent_struct, PL_reentrant_buffer->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostent") : 0))
 #   endif
 #   if !defined(gethostent) && GETHOSTENT_R_PROTO == REENTRANT_PROTO_I_SD
-#       define gethostent() (((errno = gethostent_r(&PL_reentrant_buffer->_gethostent_struct, &PL_reentrant_buffer->_gethostent_data))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : 0)
+#       define gethostent() (((errno = gethostent_r(&PL_reentrant_buffer->_gethostent_struct, &PL_reentrant_buffer->_gethostent_data))) == 0 ? &PL_reentrant_buffer->_gethostent_struct : (errno == ERANGE ? Perl_reentrant_retry("gethostent") : 0))
 #   endif
 #endif /* HAS_GETHOSTENT_R */
 
 #ifdef HAS_GETLOGIN_R
 #   undef getlogin
 #   if !defined(getlogin) && GETLOGIN_R_PROTO == REENTRANT_PROTO_I_BW
-#       define getlogin() (((errno = getlogin_r(PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size))) == 0 ? PL_reentrant_buffer->_getlogin_buffer : 0)
+#       define getlogin() (((errno = getlogin_r(PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size))) == 0 ? PL_reentrant_buffer->_getlogin_buffer : (errno == ERANGE ? Perl_reentrant_retry("getlogin") : 0))
 #   endif
 #   if !defined(getlogin) && GETLOGIN_R_PROTO == REENTRANT_PROTO_I_BI
-#       define getlogin() (((errno = getlogin_r(PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size))) == 0 ? PL_reentrant_buffer->_getlogin_buffer : 0)
+#       define getlogin() (((errno = getlogin_r(PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size))) == 0 ? PL_reentrant_buffer->_getlogin_buffer : (errno == ERANGE ? Perl_reentrant_retry("getlogin") : 0))
 #   endif
 #   if !defined(getlogin) && GETLOGIN_R_PROTO == REENTRANT_PROTO_B_BW
 #       define getlogin() getlogin_r(PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size)
@@ -826,211 +977,211 @@ typedef struct {
 #ifdef HAS_GETNETBYADDR_R
 #   undef getnetbyaddr
 #   if !defined(getnetbyaddr) && GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_UISBWRE
-#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_ptr, &PL_reentrant_buffer->_getnetent_errno))) == 0 ? PL_reentrant_buffer->_getnetent_ptr : 0)
+#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_ptr, &PL_reentrant_buffer->_getnetent_errno))) == 0 ? PL_reentrant_buffer->_getnetent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getnetbyaddr", a, b) : 0))
 #   endif
 #   if !defined(getnetbyaddr) && GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_LISBI
-#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyaddr", a, b) : 0))
 #   endif
 #   if !defined(getnetbyaddr) && GETNETBYADDR_R_PROTO == REENTRANT_PROTO_S_TISBI
-#       define getnetbyaddr(a, b) (getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size) ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyaddr(a, b) (getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size) ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyaddr", a, b) : 0))
 #   endif
 #   if !defined(getnetbyaddr) && GETNETBYADDR_R_PROTO == REENTRANT_PROTO_S_LISBI
-#       define getnetbyaddr(a, b) (getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size) ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyaddr(a, b) (getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size) ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyaddr", a, b) : 0))
 #   endif
 #   if !defined(getnetbyaddr) && GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_TISD
-#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyaddr", a, b) : 0))
 #   endif
 #   if !defined(getnetbyaddr) && GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_LISD
-#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyaddr", a, b) : 0))
 #   endif
 #   if !defined(getnetbyaddr) && GETNETBYADDR_R_PROTO == REENTRANT_PROTO_I_IISD
-#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyaddr(a, b) (((errno = getnetbyaddr_r(a, b, &PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyaddr", a, b) : 0))
 #   endif
 #endif /* HAS_GETNETBYADDR_R */
 
 #ifdef HAS_GETNETBYNAME_R
 #   undef getnetbyname
 #   if !defined(getnetbyname) && GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWRE
-#       define getnetbyname(a) (((errno = getnetbyname_r(a, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_ptr, &PL_reentrant_buffer->_getnetent_errno))) == 0 ? PL_reentrant_buffer->_getnetent_ptr : 0)
+#       define getnetbyname(a) (((errno = getnetbyname_r(a, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_ptr, &PL_reentrant_buffer->_getnetent_errno))) == 0 ? PL_reentrant_buffer->_getnetent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getnetbyname", a) : 0))
 #   endif
 #   if !defined(getnetbyname) && GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBI
-#       define getnetbyname(a) (((errno = getnetbyname_r(a, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyname(a) (((errno = getnetbyname_r(a, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyname", a) : 0))
 #   endif
 #   if !defined(getnetbyname) && GETNETBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBI
-#       define getnetbyname(a) (getnetbyname_r(a, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size) ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyname(a) (getnetbyname_r(a, &PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size) ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyname", a) : 0))
 #   endif
 #   if !defined(getnetbyname) && GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD
-#       define getnetbyname(a) (((errno = getnetbyname_r(a, &PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetbyname(a) (((errno = getnetbyname_r(a, &PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetbyname", a) : 0))
 #   endif
 #endif /* HAS_GETNETBYNAME_R */
 
 #ifdef HAS_GETNETENT_R
 #   undef getnetent
 #   if !defined(getnetent) && GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBWRE
-#       define getnetent() (((errno = getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_ptr, &PL_reentrant_buffer->_getnetent_errno))) == 0 ? PL_reentrant_buffer->_getnetent_ptr : 0)
+#       define getnetent() (((errno = getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_ptr, &PL_reentrant_buffer->_getnetent_errno))) == 0 ? PL_reentrant_buffer->_getnetent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getnetent") : 0))
 #   endif
 #   if !defined(getnetent) && GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBIE
-#       define getnetent() (((errno = getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_errno))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetent() (((errno = getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_errno))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetent") : 0))
 #   endif
 #   if !defined(getnetent) && GETNETENT_R_PROTO == REENTRANT_PROTO_S_SBIE
-#       define getnetent() (getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_errno) ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetent() (getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, &PL_reentrant_buffer->_getnetent_errno) ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetent") : 0))
 #   endif
 #   if !defined(getnetent) && GETNETENT_R_PROTO == REENTRANT_PROTO_S_SBI
-#       define getnetent() (getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size) ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetent() (getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size) ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetent") : 0))
 #   endif
 #   if !defined(getnetent) && GETNETENT_R_PROTO == REENTRANT_PROTO_I_SBI
-#       define getnetent() (((errno = getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetent() (((errno = getnetent_r(&PL_reentrant_buffer->_getnetent_struct, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetent") : 0))
 #   endif
 #   if !defined(getnetent) && GETNETENT_R_PROTO == REENTRANT_PROTO_I_SD
-#       define getnetent() (((errno = getnetent_r(&PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : 0)
+#       define getnetent() (((errno = getnetent_r(&PL_reentrant_buffer->_getnetent_struct, &PL_reentrant_buffer->_getnetent_data))) == 0 ? &PL_reentrant_buffer->_getnetent_struct : (errno == ERANGE ? Perl_reentrant_retry("getnetent") : 0))
 #   endif
 #endif /* HAS_GETNETENT_R */
 
 #ifdef HAS_GETPROTOBYNAME_R
 #   undef getprotobyname
 #   if !defined(getprotobyname) && GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSBWR
-#       define getprotobyname(a) (((errno = getprotobyname_r(a, &PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size, &PL_reentrant_buffer->_getprotoent_ptr))) == 0 ? PL_reentrant_buffer->_getprotoent_ptr : 0)
+#       define getprotobyname(a) (((errno = getprotobyname_r(a, &PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size, &PL_reentrant_buffer->_getprotoent_ptr))) == 0 ? PL_reentrant_buffer->_getprotoent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getprotobyname", a) : 0))
 #   endif
 #   if !defined(getprotobyname) && GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_S_CSBI
-#       define getprotobyname(a) (getprotobyname_r(a, &PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size) ? &PL_reentrant_buffer->_getprotoent_struct : 0)
+#       define getprotobyname(a) (getprotobyname_r(a, &PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size) ? &PL_reentrant_buffer->_getprotoent_struct : (errno == ERANGE ? Perl_reentrant_retry("getprotobyname", a) : 0))
 #   endif
 #   if !defined(getprotobyname) && GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD
-#       define getprotobyname(a) (((errno = getprotobyname_r(a, &PL_reentrant_buffer->_getprotoent_struct, &PL_reentrant_buffer->_getprotoent_data))) == 0 ? &PL_reentrant_buffer->_getprotoent_struct : 0)
+#       define getprotobyname(a) (((errno = getprotobyname_r(a, &PL_reentrant_buffer->_getprotoent_struct, &PL_reentrant_buffer->_getprotoent_data))) == 0 ? &PL_reentrant_buffer->_getprotoent_struct : (errno == ERANGE ? Perl_reentrant_retry("getprotobyname", a) : 0))
 #   endif
 #endif /* HAS_GETPROTOBYNAME_R */
 
 #ifdef HAS_GETPROTOBYNUMBER_R
 #   undef getprotobynumber
 #   if !defined(getprotobynumber) && GETPROTOBYNUMBER_R_PROTO == REENTRANT_PROTO_I_ISBWR
-#       define getprotobynumber(a) (((errno = getprotobynumber_r(a, &PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size, &PL_reentrant_buffer->_getprotoent_ptr))) == 0 ? PL_reentrant_buffer->_getprotoent_ptr : 0)
+#       define getprotobynumber(a) (((errno = getprotobynumber_r(a, &PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size, &PL_reentrant_buffer->_getprotoent_ptr))) == 0 ? PL_reentrant_buffer->_getprotoent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getprotobynumber", a) : 0))
 #   endif
 #   if !defined(getprotobynumber) && GETPROTOBYNUMBER_R_PROTO == REENTRANT_PROTO_S_ISBI
-#       define getprotobynumber(a) (getprotobynumber_r(a, &PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size) ? &PL_reentrant_buffer->_getprotoent_struct : 0)
+#       define getprotobynumber(a) (getprotobynumber_r(a, &PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size) ? &PL_reentrant_buffer->_getprotoent_struct : (errno == ERANGE ? Perl_reentrant_retry("getprotobynumber", a) : 0))
 #   endif
 #   if !defined(getprotobynumber) && GETPROTOBYNUMBER_R_PROTO == REENTRANT_PROTO_I_ISD
-#       define getprotobynumber(a) (((errno = getprotobynumber_r(a, &PL_reentrant_buffer->_getprotoent_struct, &PL_reentrant_buffer->_getprotoent_data))) == 0 ? &PL_reentrant_buffer->_getprotoent_struct : 0)
+#       define getprotobynumber(a) (((errno = getprotobynumber_r(a, &PL_reentrant_buffer->_getprotoent_struct, &PL_reentrant_buffer->_getprotoent_data))) == 0 ? &PL_reentrant_buffer->_getprotoent_struct : (errno == ERANGE ? Perl_reentrant_retry("getprotobynumber", a) : 0))
 #   endif
 #endif /* HAS_GETPROTOBYNUMBER_R */
 
 #ifdef HAS_GETPROTOENT_R
 #   undef getprotoent
 #   if !defined(getprotoent) && GETPROTOENT_R_PROTO == REENTRANT_PROTO_I_SBWR
-#       define getprotoent() (((errno = getprotoent_r(&PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size, &PL_reentrant_buffer->_getprotoent_ptr))) == 0 ? PL_reentrant_buffer->_getprotoent_ptr : 0)
+#       define getprotoent() (((errno = getprotoent_r(&PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size, &PL_reentrant_buffer->_getprotoent_ptr))) == 0 ? PL_reentrant_buffer->_getprotoent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getprotoent") : 0))
 #   endif
 #   if !defined(getprotoent) && GETPROTOENT_R_PROTO == REENTRANT_PROTO_I_SBI
-#       define getprotoent() (((errno = getprotoent_r(&PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size))) == 0 ? &PL_reentrant_buffer->_getprotoent_struct : 0)
+#       define getprotoent() (((errno = getprotoent_r(&PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size))) == 0 ? &PL_reentrant_buffer->_getprotoent_struct : (errno == ERANGE ? Perl_reentrant_retry("getprotoent") : 0))
 #   endif
 #   if !defined(getprotoent) && GETPROTOENT_R_PROTO == REENTRANT_PROTO_S_SBI
-#       define getprotoent() (getprotoent_r(&PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size) ? &PL_reentrant_buffer->_getprotoent_struct : 0)
+#       define getprotoent() (getprotoent_r(&PL_reentrant_buffer->_getprotoent_struct, PL_reentrant_buffer->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size) ? &PL_reentrant_buffer->_getprotoent_struct : (errno == ERANGE ? Perl_reentrant_retry("getprotoent") : 0))
 #   endif
 #   if !defined(getprotoent) && GETPROTOENT_R_PROTO == REENTRANT_PROTO_I_SD
-#       define getprotoent() (((errno = getprotoent_r(&PL_reentrant_buffer->_getprotoent_struct, &PL_reentrant_buffer->_getprotoent_data))) == 0 ? &PL_reentrant_buffer->_getprotoent_struct : 0)
+#       define getprotoent() (((errno = getprotoent_r(&PL_reentrant_buffer->_getprotoent_struct, &PL_reentrant_buffer->_getprotoent_data))) == 0 ? &PL_reentrant_buffer->_getprotoent_struct : (errno == ERANGE ? Perl_reentrant_retry("getprotoent") : 0))
 #   endif
 #endif /* HAS_GETPROTOENT_R */
 
 #ifdef HAS_GETPWENT_R
 #   undef getpwent
 #   if !defined(getpwent) && GETPWENT_R_PROTO == REENTRANT_PROTO_I_SBWR
-#       define getpwent() (((errno = getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : 0)
+#       define getpwent() (((errno = getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getpwent") : 0))
 #   endif
 #   if !defined(getpwent) && GETPWENT_R_PROTO == REENTRANT_PROTO_I_SBIR
-#       define getpwent() (((errno = getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : 0)
+#       define getpwent() (((errno = getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getpwent") : 0))
 #   endif
 #   if !defined(getpwent) && GETPWENT_R_PROTO == REENTRANT_PROTO_S_SBW
-#       define getpwent() (getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size) ? &PL_reentrant_buffer->_getpwent_struct : 0)
+#       define getpwent() (getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size) ? &PL_reentrant_buffer->_getpwent_struct : (errno == ERANGE ? Perl_reentrant_retry("getpwent") : 0))
 #   endif
 #   if !defined(getpwent) && GETPWENT_R_PROTO == REENTRANT_PROTO_S_SBI
-#       define getpwent() (getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size) ? &PL_reentrant_buffer->_getpwent_struct : 0)
+#       define getpwent() (getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size) ? &PL_reentrant_buffer->_getpwent_struct : (errno == ERANGE ? Perl_reentrant_retry("getpwent") : 0))
 #   endif
 #   if !defined(getpwent) && GETPWENT_R_PROTO == REENTRANT_PROTO_I_SBI
-#       define getpwent() (((errno = getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size))) == 0 ? &PL_reentrant_buffer->_getpwent_struct : 0)
+#       define getpwent() (((errno = getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size))) == 0 ? &PL_reentrant_buffer->_getpwent_struct : (errno == ERANGE ? Perl_reentrant_retry("getpwent") : 0))
 #   endif
 #   if !defined(getpwent) && GETPWENT_R_PROTO == REENTRANT_PROTO_I_SBIH
-#       define getpwent() (((errno = getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_fptr))) == 0 ? &PL_reentrant_buffer->_getpwent_struct : 0)
+#       define getpwent() (((errno = getpwent_r(&PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_fptr))) == 0 ? &PL_reentrant_buffer->_getpwent_struct : (errno == ERANGE ? Perl_reentrant_retry("getpwent") : 0))
 #   endif
 #endif /* HAS_GETPWENT_R */
 
 #ifdef HAS_GETPWNAM_R
 #   undef getpwnam
 #   if !defined(getpwnam) && GETPWNAM_R_PROTO == REENTRANT_PROTO_I_CSBWR
-#       define getpwnam(a) (((errno = getpwnam_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : 0)
+#       define getpwnam(a) (((errno = getpwnam_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getpwnam", a) : 0))
 #   endif
 #   if !defined(getpwnam) && GETPWNAM_R_PROTO == REENTRANT_PROTO_I_CSBIR
-#       define getpwnam(a) (((errno = getpwnam_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : 0)
+#       define getpwnam(a) (((errno = getpwnam_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getpwnam", a) : 0))
 #   endif
 #   if !defined(getpwnam) && GETPWNAM_R_PROTO == REENTRANT_PROTO_S_CSBI
-#       define getpwnam(a) (getpwnam_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size) ? &PL_reentrant_buffer->_getpwent_struct : 0)
+#       define getpwnam(a) (getpwnam_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size) ? &PL_reentrant_buffer->_getpwent_struct : (errno == ERANGE ? Perl_reentrant_retry("getpwnam", a) : 0))
 #   endif
 #   if !defined(getpwnam) && GETPWNAM_R_PROTO == REENTRANT_PROTO_I_CSBI
-#       define getpwnam(a) (((errno = getpwnam_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size))) == 0 ? &PL_reentrant_buffer->_getpwent_struct : 0)
+#       define getpwnam(a) (((errno = getpwnam_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size))) == 0 ? &PL_reentrant_buffer->_getpwent_struct : (errno == ERANGE ? Perl_reentrant_retry("getpwnam", a) : 0))
 #   endif
 #endif /* HAS_GETPWNAM_R */
 
 #ifdef HAS_GETPWUID_R
 #   undef getpwuid
 #   if !defined(getpwuid) && GETPWUID_R_PROTO == REENTRANT_PROTO_I_TSBWR
-#       define getpwuid(a) (((errno = getpwuid_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : 0)
+#       define getpwuid(a) (((errno = getpwuid_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getpwuid", a) : 0))
 #   endif
 #   if !defined(getpwuid) && GETPWUID_R_PROTO == REENTRANT_PROTO_I_TSBIR
-#       define getpwuid(a) (((errno = getpwuid_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : 0)
+#       define getpwuid(a) (((errno = getpwuid_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, &PL_reentrant_buffer->_getpwent_ptr))) == 0 ? PL_reentrant_buffer->_getpwent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getpwuid", a) : 0))
 #   endif
 #   if !defined(getpwuid) && GETPWUID_R_PROTO == REENTRANT_PROTO_I_TSBI
-#       define getpwuid(a) (((errno = getpwuid_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size))) == 0 ? &PL_reentrant_buffer->_getpwent_struct : 0)
+#       define getpwuid(a) (((errno = getpwuid_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size))) == 0 ? &PL_reentrant_buffer->_getpwent_struct : (errno == ERANGE ? Perl_reentrant_retry("getpwuid", a) : 0))
 #   endif
 #   if !defined(getpwuid) && GETPWUID_R_PROTO == REENTRANT_PROTO_S_TSBI
-#       define getpwuid(a) (getpwuid_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size) ? &PL_reentrant_buffer->_getpwent_struct : 0)
+#       define getpwuid(a) (getpwuid_r(a, &PL_reentrant_buffer->_getpwent_struct, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size) ? &PL_reentrant_buffer->_getpwent_struct : (errno == ERANGE ? Perl_reentrant_retry("getpwuid", a) : 0))
 #   endif
 #endif /* HAS_GETPWUID_R */
 
 #ifdef HAS_GETSERVBYNAME_R
 #   undef getservbyname
 #   if !defined(getservbyname) && GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSBWR
-#       define getservbyname(a, b) (((errno = getservbyname_r(a, b, &PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size, &PL_reentrant_buffer->_getservent_ptr))) == 0 ? PL_reentrant_buffer->_getservent_ptr : 0)
+#       define getservbyname(a, b) (((errno = getservbyname_r(a, b, &PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size, &PL_reentrant_buffer->_getservent_ptr))) == 0 ? PL_reentrant_buffer->_getservent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getservbyname", a, b) : 0))
 #   endif
 #   if !defined(getservbyname) && GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_S_CCSBI
-#       define getservbyname(a, b) (getservbyname_r(a, b, &PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size) ? &PL_reentrant_buffer->_getservent_struct : 0)
+#       define getservbyname(a, b) (getservbyname_r(a, b, &PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size) ? &PL_reentrant_buffer->_getservent_struct : (errno == ERANGE ? Perl_reentrant_retry("getservbyname", a, b) : 0))
 #   endif
 #   if !defined(getservbyname) && GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD
-#       define getservbyname(a, b) (((errno = getservbyname_r(a, b, &PL_reentrant_buffer->_getservent_struct, &PL_reentrant_buffer->_getservent_data))) == 0 ? &PL_reentrant_buffer->_getservent_struct : 0)
+#       define getservbyname(a, b) (((errno = getservbyname_r(a, b, &PL_reentrant_buffer->_getservent_struct, &PL_reentrant_buffer->_getservent_data))) == 0 ? &PL_reentrant_buffer->_getservent_struct : (errno == ERANGE ? Perl_reentrant_retry("getservbyname", a, b) : 0))
 #   endif
 #endif /* HAS_GETSERVBYNAME_R */
 
 #ifdef HAS_GETSERVBYPORT_R
 #   undef getservbyport
 #   if !defined(getservbyport) && GETSERVBYPORT_R_PROTO == REENTRANT_PROTO_I_ICSBWR
-#       define getservbyport(a, b) (((errno = getservbyport_r(a, b, &PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size, &PL_reentrant_buffer->_getservent_ptr))) == 0 ? PL_reentrant_buffer->_getservent_ptr : 0)
+#       define getservbyport(a, b) (((errno = getservbyport_r(a, b, &PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size, &PL_reentrant_buffer->_getservent_ptr))) == 0 ? PL_reentrant_buffer->_getservent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getservbyport", a, b) : 0))
 #   endif
 #   if !defined(getservbyport) && GETSERVBYPORT_R_PROTO == REENTRANT_PROTO_S_ICSBI
-#       define getservbyport(a, b) (getservbyport_r(a, b, &PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size) ? &PL_reentrant_buffer->_getservent_struct : 0)
+#       define getservbyport(a, b) (getservbyport_r(a, b, &PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size) ? &PL_reentrant_buffer->_getservent_struct : (errno == ERANGE ? Perl_reentrant_retry("getservbyport", a, b) : 0))
 #   endif
 #   if !defined(getservbyport) && GETSERVBYPORT_R_PROTO == REENTRANT_PROTO_I_ICSD
-#       define getservbyport(a, b) (((errno = getservbyport_r(a, b, &PL_reentrant_buffer->_getservent_struct, &PL_reentrant_buffer->_getservent_data))) == 0 ? &PL_reentrant_buffer->_getservent_struct : 0)
+#       define getservbyport(a, b) (((errno = getservbyport_r(a, b, &PL_reentrant_buffer->_getservent_struct, &PL_reentrant_buffer->_getservent_data))) == 0 ? &PL_reentrant_buffer->_getservent_struct : (errno == ERANGE ? Perl_reentrant_retry("getservbyport", a, b) : 0))
 #   endif
 #endif /* HAS_GETSERVBYPORT_R */
 
 #ifdef HAS_GETSERVENT_R
 #   undef getservent
 #   if !defined(getservent) && GETSERVENT_R_PROTO == REENTRANT_PROTO_I_SBWR
-#       define getservent() (((errno = getservent_r(&PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size, &PL_reentrant_buffer->_getservent_ptr))) == 0 ? PL_reentrant_buffer->_getservent_ptr : 0)
+#       define getservent() (((errno = getservent_r(&PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size, &PL_reentrant_buffer->_getservent_ptr))) == 0 ? PL_reentrant_buffer->_getservent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getservent") : 0))
 #   endif
 #   if !defined(getservent) && GETSERVENT_R_PROTO == REENTRANT_PROTO_I_SBI
-#       define getservent() (((errno = getservent_r(&PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size))) == 0 ? &PL_reentrant_buffer->_getservent_struct : 0)
+#       define getservent() (((errno = getservent_r(&PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size))) == 0 ? &PL_reentrant_buffer->_getservent_struct : (errno == ERANGE ? Perl_reentrant_retry("getservent") : 0))
 #   endif
 #   if !defined(getservent) && GETSERVENT_R_PROTO == REENTRANT_PROTO_S_SBI
-#       define getservent() (getservent_r(&PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size) ? &PL_reentrant_buffer->_getservent_struct : 0)
+#       define getservent() (getservent_r(&PL_reentrant_buffer->_getservent_struct, PL_reentrant_buffer->_getservent_buffer, PL_reentrant_buffer->_getservent_size) ? &PL_reentrant_buffer->_getservent_struct : (errno == ERANGE ? Perl_reentrant_retry("getservent") : 0))
 #   endif
 #   if !defined(getservent) && GETSERVENT_R_PROTO == REENTRANT_PROTO_I_SD
-#       define getservent() (((errno = getservent_r(&PL_reentrant_buffer->_getservent_struct, &PL_reentrant_buffer->_getservent_data))) == 0 ? &PL_reentrant_buffer->_getservent_struct : 0)
+#       define getservent() (((errno = getservent_r(&PL_reentrant_buffer->_getservent_struct, &PL_reentrant_buffer->_getservent_data))) == 0 ? &PL_reentrant_buffer->_getservent_struct : (errno == ERANGE ? Perl_reentrant_retry("getservent") : 0))
 #   endif
 #endif /* HAS_GETSERVENT_R */
 
 #ifdef HAS_GETSPNAM_R
 #   undef getspnam
 #   if !defined(getspnam) && GETSPNAM_R_PROTO == REENTRANT_PROTO_I_CSBWR
-#       define getspnam(a) (((errno = getspnam_r(a, &PL_reentrant_buffer->_getspent_struct, PL_reentrant_buffer->_getspent_buffer, PL_reentrant_buffer->_getspent_size, &PL_reentrant_buffer->_getspent_ptr))) == 0 ? PL_reentrant_buffer->_getspent_ptr : 0)
+#       define getspnam(a) (((errno = getspnam_r(a, &PL_reentrant_buffer->_getspent_struct, PL_reentrant_buffer->_getspent_buffer, PL_reentrant_buffer->_getspent_size, &PL_reentrant_buffer->_getspent_ptr))) == 0 ? PL_reentrant_buffer->_getspent_ptr : (errno == ERANGE ? Perl_reentrant_retry("getspnam", a) : 0))
 #   endif
 #   if !defined(getspnam) && GETSPNAM_R_PROTO == REENTRANT_PROTO_S_CSBI
-#       define getspnam(a) (getspnam_r(a, &PL_reentrant_buffer->_getspent_struct, PL_reentrant_buffer->_getspent_buffer, PL_reentrant_buffer->_getspent_size) ? &PL_reentrant_buffer->_getspent_struct : 0)
+#       define getspnam(a) (getspnam_r(a, &PL_reentrant_buffer->_getspent_struct, PL_reentrant_buffer->_getspent_buffer, PL_reentrant_buffer->_getspent_size) ? &PL_reentrant_buffer->_getspent_struct : (errno == ERANGE ? Perl_reentrant_retry("getspnam", a) : 0))
 #   endif
 #endif /* HAS_GETSPNAM_R */