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Fix regcomp wcscoll, wcscmp namespace (bug 18497).

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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.
This commit is contained in:
Joseph Myers 2015-06-09 21:07:30 +00:00
parent d3ab671c94
commit 2f44ee08db
12 changed files with 61 additions and 23 deletions
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30
ChangeLog
View File

@ -1,5 +1,35 @@
2015-06-09 Joseph Myers <joseph@codesourcery.com>
[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.
[BZ #18507]
* sysdeps/unix/sysv/linux/fstatvfs.c (fstatvfs): Rename to
__fstatvfs and define as weak alias of __fstatvfs. Use

2
NEWS
View File

@ -20,7 +20,7 @@ Version 2.22
18111, 18116, 18125, 18128, 18138, 18185, 18196, 18197, 18206, 18210,
18211, 18217, 18220, 18221, 18234, 18244, 18247, 18287, 18319, 18324,
18333, 18346, 18397, 18409, 18410, 18412, 18418, 18422, 18434, 18444,
18468, 18469, 18470, 18483, 18495, 18496, 18498, 18507.
18468, 18469, 18470, 18483, 18495, 18496, 18497, 18498, 18507.
* Cache information can be queried via sysconf() function on s390 e.g. with
_SC_LEVEL1_ICACHE_SIZE as argument.

3
conform/Makefile
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@ -346,20 +346,17 @@ test-xfail-XOPEN2K8/ndbm.h/linknamespace = yes
# Unsorted expected failures.
test-xfail-XPG3/glob.h/linknamespace = yes
test-xfail-XPG3/regex.h/linknamespace = yes
test-xfail-XPG3/unistd.h/linknamespace = yes
test-xfail-XPG3/wordexp.h/linknamespace = yes
test-xfail-XPG4/fmtmsg.h/linknamespace = yes
test-xfail-XPG4/glob.h/linknamespace = yes
test-xfail-XPG4/netdb.h/linknamespace = yes
test-xfail-XPG4/regex.h/linknamespace = yes
test-xfail-XPG4/stdlib.h/linknamespace = yes
test-xfail-XPG4/syslog.h/linknamespace = yes
test-xfail-XPG4/unistd.h/linknamespace = yes
test-xfail-XPG4/wordexp.h/linknamespace = yes
test-xfail-POSIX/aio.h/linknamespace = yes
test-xfail-POSIX/mqueue.h/linknamespace = yes
test-xfail-POSIX/regex.h/linknamespace = yes
test-xfail-POSIX/semaphore.h/linknamespace = yes
test-xfail-UNIX98/fmtmsg.h/linknamespace = yes
test-xfail-UNIX98/mqueue.h/linknamespace = yes

11
include/wchar.h
View File

@ -81,17 +81,22 @@ libc_hidden_proto (vswscanf)
libc_hidden_proto (mbrtowc)
libc_hidden_proto (wcrtomb)
libc_hidden_proto (wcscmp)
extern int __wcscmp (const wchar_t *__s1, const wchar_t *__s2)
__THROW __attribute_pure__;
libc_hidden_proto (__wcscmp)
libc_hidden_proto (wcsftime)
libc_hidden_proto (wcsspn)
libc_hidden_proto (wcschr)
/* The C++ overloading of wcschr means we have to repeat the type to
declare __wcschr instead of using typeof, to avoid errors in C++
tests. The same applies to __wmemchr. */
tests; in addition, __THROW cannot be used with a function type
from typeof in C++. The same applies to __wmemchr and, as regards
__THROW, to __wcscmp and __wcscoll. */
extern wchar_t *__wcschr (const wchar_t *__wcs, wchar_t __wc)
__THROW __attribute_pure__;
libc_hidden_proto (__wcschr)
libc_hidden_proto (wcscoll)
extern int __wcscoll (const wchar_t *__s1, const wchar_t *__s2) __THROW;
libc_hidden_proto (__wcscoll)
libc_hidden_proto (wcspbrk)
extern typeof (wmemset) __wmemset;

6
posix/regcomp.c
View File

@ -2683,7 +2683,7 @@ build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
return REG_ECOLLATE;
cmp_buf[0] = start_wc;
cmp_buf[4] = end_wc;
if (wcscoll (cmp_buf, cmp_buf + 4) > 0)
if (__wcscoll (cmp_buf, cmp_buf + 4) > 0)
return REG_ERANGE;
/* Got valid collation sequence values, add them as a new entry.
@ -2725,8 +2725,8 @@ build_range_exp (bitset_t sbcset, bracket_elem_t *start_elem,
for (wc = 0; wc < SBC_MAX; ++wc)
{
cmp_buf[2] = wc;
if (wcscoll (cmp_buf, cmp_buf + 2) <= 0
&& wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
if (__wcscoll (cmp_buf, cmp_buf + 2) <= 0
&& __wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
bitset_set (sbcset, wc);
}
}

4
posix/regexec.c
View File

@ -3968,8 +3968,8 @@ check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
{
cmp_buf[0] = cset->range_starts[i];
cmp_buf[4] = cset->range_ends[i];
if (wcscoll (cmp_buf, cmp_buf + 2) <= 0
&& wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
if (__wcscoll (cmp_buf, cmp_buf + 2) <= 0
&& __wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
{
match_len = char_len;
goto check_node_accept_bytes_match;

4
sysdeps/i386/i686/multiarch/wcscmp-c.c
View File

@ -4,8 +4,10 @@
#ifdef SHARED
# undef libc_hidden_def
# define libc_hidden_def(name) \
__hidden_ver1 (__wcscmp_ia32, __GI_wcscmp, __wcscmp_ia32);
__hidden_ver1 (__wcscmp_ia32, __GI___wcscmp, __wcscmp_ia32);
#endif
#undef weak_alias
#define weak_alias(name, alias)
extern __typeof (wcscmp) __wcscmp_ia32;

7
sysdeps/i386/i686/multiarch/wcscmp.S
View File

@ -26,8 +26,8 @@
happened. */
#if IS_IN (libc)
.text
ENTRY(wcscmp)
.type wcscmp, @gnu_indirect_function
ENTRY(__wcscmp)
.type __wcscmp, @gnu_indirect_function
pushl %ebx
cfi_adjust_cfa_offset (4)
cfi_rel_offset (ebx, 0)
@ -43,5 +43,6 @@ ENTRY(wcscmp)
cfi_adjust_cfa_offset (-4);
cfi_restore (ebx)
ret
END(wcscmp)
END(__wcscmp)
weak_alias (__wcscmp, wcscmp)
#endif

7
sysdeps/x86_64/wcscmp.S
View File

@ -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)

3
wcsmbs/wcscmp.c
View File

@ -19,7 +19,7 @@
#include <wchar.h>
#ifndef WCSCMP
# define WCSCMP wcscmp
# define WCSCMP __wcscmp
#endif
/* Compare S1 and S2, returning less than, equal to or
@ -44,3 +44,4 @@ WCSCMP (s1, s2)
return c1 < c2 ? -1 : 1;
}
libc_hidden_def (WCSCMP)
weak_alias (WCSCMP, wcscmp)

5
wcsmbs/wcscoll.c
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@ -21,11 +21,12 @@
#define STRING_TYPE wchar_t
#define USTRING_TYPE wint_t
#define STRCOLL wcscoll
#define STRCOLL __wcscoll
#define STRCOLL_L __wcscoll_l
#define USE_HIDDEN_DEF
#include "../string/strcoll.c"
#ifndef USE_IN_EXTENDED_LOCALE_MODEL
libc_hidden_weak (wcscoll)
weak_alias (__wcscoll, wcscoll)
#endif

2
wcsmbs/wcscoll_l.c
View File

@ -24,7 +24,7 @@
#define USTRING_TYPE wint_t
#define STRCOLL __wcscoll_l
#define STRDIFF __wcsdiff
#define STRCMP wcscmp
#define STRCMP __wcscmp
#define WEIGHT_H "../locale/weightwc.h"
#define SUFFIX WC
#define L(arg) L##arg