diff options
Diffstat (limited to 'm4/strtoimax.m4')
| -rw-r--r-- | m4/strtoimax.m4 | 64 |
1 files changed, 62 insertions, 2 deletions
diff --git a/m4/strtoimax.m4 b/m4/strtoimax.m4 index a8d0b69c205..58a31899b8b 100644 --- a/m4/strtoimax.m4 +++ b/m4/strtoimax.m4 @@ -1,5 +1,5 @@ -# strtoimax.m4 serial 11 -dnl Copyright (C) 2002-2004, 2006, 2009-2011 Free Software Foundation, Inc. +# strtoimax.m4 serial 13 +dnl Copyright (C) 2002-2004, 2006, 2009-2012 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -14,6 +14,66 @@ AC_DEFUN([gl_FUNC_STRTOIMAX], if test "$ac_cv_have_decl_strtoimax" != yes; then HAVE_DECL_STRTOIMAX=0 fi + + if test $ac_cv_func_strtoimax = yes; then + HAVE_STRTOIMAX=1 + dnl On AIX 5.1, strtoimax() fails for values outside the 'int' range. + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CACHE_CHECK([whether strtoimax works], [gl_cv_func_strtoimax], + [AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <errno.h> +#include <string.h> +#include <inttypes.h> +int main () +{ + if (sizeof (intmax_t) > sizeof (int)) + { + const char *s = "4294967295"; + char *p; + intmax_t res; + errno = 0; + res = strtoimax (s, &p, 10); + if (p != s + strlen (s)) + return 1; + if (errno != 0) + return 2; + if (res != (intmax_t) 65535 * (intmax_t) 65537) + return 3; + } + else + { + const char *s = "2147483647"; + char *p; + intmax_t res; + errno = 0; + res = strtoimax (s, &p, 10); + if (p != s + strlen (s)) + return 1; + if (errno != 0) + return 2; + if (res != 2147483647) + return 3; + } + return 0; +} +]])], + [gl_cv_func_strtoimax=yes], + [gl_cv_func_strtoimax=no], + [case "$host_os" in + # Guess no on AIX 5. + aix5*) gl_cv_func_strtoimax="guessing no" ;; + # Guess yes otherwise. + *) gl_cv_func_strtoimax="guessing yes" ;; + esac + ]) + ]) + case "$gl_cv_func_strtoimax" in + *no) REPLACE_STRTOIMAX=1 ;; + esac + else + HAVE_STRTOIMAX=0 + fi ]) # Prerequisites of lib/strtoimax.c. |