From 2cfbdb9a27a8fb08e0249d790a7e6d6053adda59 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Wed, 10 Dec 2014 16:59:02 +0000 Subject: Fix strftime wcschr namespace (bug 17634). Use of strftime, a C90 function, ends up bringing in wcschr, which is not a C90 function. Although not a conformance bug (C90 reserves wcs*), this is still contrary to glibc practice of avoiding relying on those reservations; this patch arranges for the internal uses to use __wcschr instead, with wcschr being a weak alias. This is more complicated than some such patches because of the various IFUNC definitions of wcschr (which include code redefining libc_hidden_def in a way that involves creating __GI_wcschr manually and so also needs to create __GI___wcschr after the change of internal uses to use __wcschr). Tested for x86_64 and 32-bit x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). 2014-12-10 Joseph Myers Adhemerval Zanella [BZ #17634] * wcsmbs/wcschr.c [!WCSCHR] (wcschr): Define as __wcschr. Undefine after defining function. Define as weak alias of __wcschr. Use libc_hidden_weak. * include/wchar.h (__wcschr): Declare. Use libc_hidden_proto. * sysdeps/i386/i686/multiarch/wcschr-c.c [IS_IN (libc) && SHARED] (libc_hidden_def): Also define __GI___wcschr alias. * sysdeps/i386/i686/multiarch/wcschr.S (wcschr): Rename to __wcschr and define as weak alias of __wcschr. * sysdeps/powerpc/power6/wcschr.c [!WCSCHR] (WCSCHR): Define as __wcschr. [!WCSCHR] (DEFAULT_WCSCHR): Define. [DEFAULT_WCSCHR] (__wcschr): Use libc_hidden_def. [DEFAULT_WCSCHR] (wcschr): Define as weak alias of __wcschr. Use libc_hidden_weak. Do not use libc_hidden_def. * sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c [IS_IN (libc) && SHARED] (libc_hidden_def): Also define __GI___wcschr alias. * sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c [IS_IN (libc)] (wcschr): Define as macro expanding to __redirect_wcschr. [IS_IN (libc)] (__wcschr_ppc): Use __redirect_wcschr in typeof. [IS_IN (libc)] (__wcschr_power6): Likewise. [IS_IN (libc)] (__wcschr_power7): Likewise. [IS_IN (libc)] (__libc_wcschr): New. Define with libc_ifunc instead of wcschr. [IS_IN (libc)] (wcschr): Undefine and define as weak alias of __libc_wcschr. [!IS_IN (libc)] (libc_hidden_def): Do not undefine and redefine. * sysdeps/powerpc/powerpc64/multiarch/wcschr.c (wcschr): Rename to __wcschr and define as weak alias of __wcschr. Use libc_hidden_builtin_def. * sysdeps/x86_64/wcschr.S (wcschr): Rename to __wcschr and define as weak alias of __wcschr. Use libc_hidden_weak. * time/alt_digit.c (_nl_get_walt_digit): Use __wcschr instead of wcschr. * time/era.c (_nl_init_era_entries): Likewise. * conform/Makefile (test-xfail-ISO/time.h/linknamespace): Remove variable. (test-xfail-XPG3/time.h/linknamespace): Likewise. (test-xfail-XPG4/time.h/linknamespace): Likewise. --- NEWS | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'NEWS') diff --git a/NEWS b/NEWS index 4235d37c62..480e3b1333 100644 --- a/NEWS +++ b/NEWS @@ -13,8 +13,8 @@ Version 2.21 15884, 16469, 16619, 16740, 16857, 17192, 17266, 17344, 17363, 17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555, 17570, 17571, 17572, 17573, 17574, 17581, 17582, 17583, 17584, 17585, - 17589, 17594, 17601, 17608, 17616, 17625, 17633, 17647, 17653, 17664, - 17665, 17668, 17682. + 17589, 17594, 17601, 17608, 17616, 17625, 17633, 17634, 17647, 17653, + 17664, 17665, 17668, 17682. * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag under certain input conditions resulting in the execution of a shell for -- cgit v1.2.3