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authorJoseph Myers <joseph@codesourcery.com>2014-11-12 22:41:03 +0000
committerJoseph Myers <joseph@codesourcery.com>2014-11-12 22:41:03 +0000
commit9975e3d37d8585b41db075321bade3495cf58cdb (patch)
tree416cb16185348b44feb8e0fdb778325a52598e21 /locale
parentc4eae75271734f820a7477dbce33f8752af6f003 (diff)
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.
Diffstat (limited to 'locale')
-rw-r--r--locale/findlocale.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/locale/findlocale.c b/locale/findlocale.c
index 22e8b53032..b64352c9d9 100644
--- a/locale/findlocale.c
+++ b/locale/findlocale.c
@@ -79,8 +79,8 @@ valid_locale_name (const char *name)
return 0;
/* Directory traversal attempt. */
static const char slashdot[4] = {'/', '.', '.', '/'};
- if (__glibc_unlikely (memmem (name, namelen,
- slashdot, sizeof (slashdot)) != NULL))
+ if (__glibc_unlikely (__memmem (name, namelen,
+ slashdot, sizeof (slashdot)) != NULL))
return 0;
if (namelen == 2 && __glibc_unlikely (name[0] == '.' && name [1] == '.'))
return 0;