From 9975e3d37d8585b41db075321bade3495cf58cdb Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Wed, 12 Nov 2014 22:41:03 +0000 Subject: Fix locale memmem namespace (bug 17585). Locale code, brought in by ISO C functions, calls memmem, which is not an ISO C function. This isn't an ISO C conformance bug, because all mem* names are reserved, but glibc practice is not to rely on that reservation (thus, memmem is only declared in string.h if __USE_GNU even though ISO C would allow it to be declared unconditionally, for example). This patch changes that code to use __memmem. Note: there are uses of memmem elsewhere in glibc that I didn't change, although it may turn out some of those also need to use __memmem. Tested for x86_64 (testsuite, and that disassembly of installed shared libraries is unchanged by this patch). [BZ #17585] * string/memmem.c [!_LIBC] (__memmem): Define to memmem. (memmem): Rename to __memmem and define as weak alias of __memmem. Use libc_hidden_weak. (__memmem): Use libc_hidden_def. * include/string.h (__memmem): Declare. Use libc_hidden_proto. * locale/findlocale.c (valid_locale_name): Use __memmem instead of memmem. --- include/string.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/string.h b/include/string.h index 2603e9c0ab..99cc2d3f59 100644 --- a/include/string.h +++ b/include/string.h @@ -90,6 +90,8 @@ extern char *__strsep_g (char **__stringp, const char *__delim); libc_hidden_proto (__strsep_g) libc_hidden_proto (strnlen) libc_hidden_proto (memmem) +extern __typeof (memmem) __memmem; +libc_hidden_proto (__memmem) libc_hidden_proto (__ffs) libc_hidden_builtin_proto (memchr) -- cgit 1.4.1