From 2f44ee08dbf51d39ef5692699cc35f93faf64db1 Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Tue, 9 Jun 2015 21:07:30 +0000
Subject: Fix regcomp wcscoll, wcscmp namespace (bug 18497).

regcomp brings in references to wcscoll, which isn't in all the
standards that contain regcomp.  In turn, wcscoll brings in references
to wcscmp, also not in all those standards.  This patch fixes this by
making those functions into weak aliases of __wcscoll and __wcscmp and
calling those names instead as needed.

Tested for x86_64 and x86 (testsuite, and that disassembly of
installed shared libraries is unchanged by the patch).

	[BZ #18497]
	* wcsmbs/wcscmp.c [!WCSCMP] (WCSCMP): Define as __wcscmp instead
	of wcscmp.
	(wcscmp): Define as weak alias of WCSCMP.
	* wcsmbs/wcscoll.c (STRCOLL): Define as __wcscoll instead of
	wcscoll.
	(USE_HIDDEN_DEF): Define.
	[!USE_IN_EXTENDED_LOCALE_MODEL] (wcscoll): Define as weak alias of
	__wcscoll.  Don't use libc_hidden_weak.
	* wcsmbs/wcscoll_l.c (STRCMP): Define as __wcscmp instead of
	wcscmp.
	* sysdeps/i386/i686/multiarch/wcscmp-c.c
	[SHARED] (libc_hidden_def): Define __GI___wcscmp instead of
	__GI_wcscmp.
	(weak_alias): Undefine and redefine.
	* sysdeps/i386/i686/multiarch/wcscmp.S (wcscmp): Rename to
	__wcscmp and define as weak alias of __wcscmp.
	* sysdeps/x86_64/wcscmp.S (wcscmp): Likewise.
	* include/wchar.h (__wcscmp): Declare.  Use libc_hidden_proto.
	(__wcscoll): Likewise.
	(wcscmp): Don't use libc_hidden_proto.
	(wcscoll): Likewise.
	* posix/regcomp.c (build_range_exp): Call __wcscoll instead of
	wcscoll.
	* posix/regexec.c (check_node_accept_bytes): Likewise.
	* conform/Makefile (test-xfail-XPG3/regex.h/linknamespace): Remove
	variable.
	(test-xfail-XPG4/regex.h/linknamespace): Likewise.
	(test-xfail-POSIX/regex.h/linknamespace): Likewise.
---
 sysdeps/x86_64/wcscmp.S | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'sysdeps/x86_64/wcscmp.S')

diff --git a/sysdeps/x86_64/wcscmp.S b/sysdeps/x86_64/wcscmp.S
index 5d6806c..bd36d9f 100644
--- a/sysdeps/x86_64/wcscmp.S
+++ b/sysdeps/x86_64/wcscmp.S
@@ -22,7 +22,7 @@
 /* Note: wcscmp uses signed comparison, not unsighed as in strcmp function. */
 
 	.text
-ENTRY (wcscmp)
+ENTRY (__wcscmp)
 /*
 	* This implementation uses SSE to compare up to 16 bytes at a time.
 */
@@ -945,5 +945,6 @@ L(equal):
 	xor	%rax, %rax
 	ret
 
-END (wcscmp)
-libc_hidden_def (wcscmp)
+END (__wcscmp)
+libc_hidden_def (__wcscmp)
+weak_alias (__wcscmp, wcscmp)
-- 
cgit v1.1