diff options
| author | Saleem Abdulrasool <abdulras@google.com> | 2021-08-27 15:51:47 +0000 |
|---|---|---|
| committer | Mark Wielaard <mark@klomp.org> | 2021-08-27 18:34:15 +0200 |
| commit | 4d6dd0e5ad5c3366cbf701b4fb62b6d91be545f8 (patch) | |
| tree | 63147b2b38aba183ba281fe805dcdf74548bd5a7 | |
| parent | 047d09e17edfb220cd6a96129bd19b496d503fc5 (diff) | |
| download | elfutils-4d6dd0e5ad5c3366cbf701b4fb62b6d91be545f8.tar.gz | |
lib: avoid potential problems with `-fno-common`
This properly homes the fallback function into a translation unit rather
than trying to define an inline common definition for the fallback path.
The intent of the original approach was to actually simply avoid adding
a new source file that is used for the fallback path. However, that may
cause trouble with multiple definitions if the symbol does not get vague
linkage (which itself is not particularly great). This simplifies the
behaviour at the cost of an extra inode.
| -rw-r--r-- | lib/ChangeLog | 9 | ||||
| -rw-r--r-- | lib/Makefile.am | 2 | ||||
| -rw-r--r-- | lib/system.h | 17 |
3 files changed, 12 insertions, 16 deletions
diff --git a/lib/ChangeLog b/lib/ChangeLog index cf676742..60d32082 100644 --- a/lib/ChangeLog +++ b/lib/ChangeLog @@ -1,3 +1,12 @@ +2021-08-23 Saleem Abdulrasool <abdulras@google.com> + + * system.h: Remove inline definition for error and error_message_count + in the fallback path. + * Makefile.am (libeu_a_SOURCES): Add error.c. + * error.c: New file, moves the previous inline definitions to avoid + multiple definitions properly rather than relying on -fcommon and vague + linkage. + 2021-08-21 Saleem Abdulrasool <abdulras@google.com> * fixedsizehash.h: Remove unused STROF macro. diff --git a/lib/Makefile.am b/lib/Makefile.am index 97bf7329..766fbcd7 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -35,7 +35,7 @@ noinst_LIBRARIES = libeu.a libeu_a_SOURCES = xstrdup.c xstrndup.c xmalloc.c next_prime.c \ crc32.c crc32_file.c \ - color.c printversion.c + color.c error.c printversion.c noinst_HEADERS = fixedsizehash.h libeu.h system.h dynamicsizehash.h list.h \ eu-config.h color.h printversion.h bpf.h \ diff --git a/lib/system.h b/lib/system.h index b963fd15..edbc8488 100644 --- a/lib/system.h +++ b/lib/system.h @@ -45,21 +45,8 @@ #if defined(HAVE_ERROR_H) #include <error.h> #elif defined(HAVE_ERR_H) -#include <err.h> - -static int error_message_count = 0; - -static inline void error(int status, int errnum, const char *format, ...) { - va_list argp; - - va_start(argp, format); - verr(status, format, argp); - va_end(argp); - - if (status) - exit(status); - ++error_message_count; -} +extern int error_message_count; +void error(int status, int errnum, const char *format, ...); #else #error "err.h or error.h must be available" #endif |