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Remove the str(n)dup inlines from string/bits/string2.h. Although inlining

Browse Source 
calls with constant strings shows a small (~10%) performance gain, strdup is
typically used in error reporting code, so not performance critical.
Remove the now unused __need_malloc_and_calloc related defines from stdlib.h.

Rename existing uses of str(n)dup to __str(n)dup so it no longer needs to be
redirected to a builtin.  Also building GLIBC with -Os now no longer shows
localplt or linkname space failures (partial fix for BZ #15105 and BZ #19463).

        [BZ #15105]
        [BZ #19463]
        * elf/dl-cache.c (_dl_load_cache_lookup): Use __strdup.
        * inet/rcmd.c (rcmd_af): Likewise.
        * inet/rexec.c   (rexec_af): Likewise.
        * intl/dcigettext.c (_LIBC): Likewise.
        * intl/finddomain.c (_nl_find_domain): Use strdup expansion.
        * locale/loadarchive.c (_nl_load_locale_from_archive): Use __strdup.
        * locale/setlocale.c (setlocale): Likewise.
        * posix/spawn_faction_addopen.c
        (posix_spawn_file_actions_addopen): Likewise.
        * stdlib/putenv.c (putenv): Use __strndup.
        * sunrpc/svc_simple.c (__registerrpc): Use __strdup.
        * sysdeps/posix/getaddrinfo.c (gaih_inet): Use __strdup/__strndup.
        * include/stdlib.h (__need_malloc_and_calloc): Remove uses.
        (__Need_M_And_C) Remove define/undef.
        * stdlib/stdlib.h (__need_malloc_and_calloc): Remove uses.
        (__malloc_and_calloc_defined): Remove define.
        * string/bits/string2.h (__strdup): Remove define.
        (strdup): Likewise.
        (__strndup): Likewise.
        (strndup): Likewise.
This commit is contained in:
Wilco Dijkstra 2017-03-13 18:42:35 +00:00
parent 53a4608f8d
commit ae65d4f3c3
15 changed files with 41 additions and 98 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
ChangeLog
View File

@ -1,3 +1,28 @@
2017-03-13 Wilco Dijkstra <wdijkstr@arm.com>
[BZ #15105]
[BZ #19463]
* elf/dl-cache.c (_dl_load_cache_lookup): Use __strdup.
* inet/rcmd.c (rcmd_af): Likewise.
* inet/rexec.c (rexec_af): Likewise.
* intl/dcigettext.c (_LIBC): Likewise.
* intl/finddomain.c (_nl_find_domain): Use strdup expansion.
* locale/loadarchive.c (_nl_load_locale_from_archive): Use __strdup.
* locale/setlocale.c (setlocale): Likewise.
* posix/spawn_faction_addopen.c
(posix_spawn_file_actions_addopen): Likewise.
* stdlib/putenv.c (putenv): Use __strndup.
* sunrpc/svc_simple.c (__registerrpc): Use __strdup.
* sysdeps/posix/getaddrinfo.c (gaih_inet): Use __strdup/__strndup.
* include/stdlib.h (__need_malloc_and_calloc): Remove uses.
(__Need_M_And_C) Remove define/undef.
* stdlib/stdlib.h (__need_malloc_and_calloc): Remove uses.
(__malloc_and_calloc_defined): Remove define.
* string/bits/string2.h (__strdup): Remove define.
(strdup): Likewise.
(__strndup): Likewise.
(strndup): Likewise.
2017-03-13 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/bits/in.h (IPV6_AUTOFLOWLABEL): New

2
elf/dl-cache.c
View File

@ -302,7 +302,7 @@ _dl_load_cache_lookup (const char *name)
char *temp;
temp = alloca (strlen (best) + 1);
strcpy (temp, best);
return strdup (temp);
return __strdup (temp);
}
#ifndef MAP_COPY

8
include/stdlib.h
View File

@ -1,16 +1,12 @@
#ifndef _STDLIB_H
#ifdef __need_malloc_and_calloc
#define __Need_M_And_C
#endif
#ifndef _ISOMAC
# include <stddef.h>
#endif
#include <stdlib/stdlib.h>
/* Now define the internal interfaces. */
#if !defined __Need_M_And_C && !defined _ISOMAC
#if !defined _ISOMAC
# include <sys/stat.h>
__BEGIN_DECLS
@ -269,6 +265,4 @@ __END_DECLS
#endif
#undef __Need_M_And_C
#endif /* include/stdlib.h */

2
inet/rcmd.c
View File

@ -149,7 +149,7 @@ rcmd_af (char **ahost, u_short rport, const char *locuser, const char *remuser,
if (res->ai_canonname){
free (ahostbuf);
ahostbuf = strdup (res->ai_canonname);
ahostbuf = __strdup (res->ai_canonname);
if (ahostbuf == NULL) {
__fxprintf(NULL, "%s",
_("rcmd: Cannot allocate memory\n"));

2
inet/rexec.c
View File

@ -73,7 +73,7 @@ rexec_af (char **ahost, int rport, const char *name, const char *pass,
if (res0->ai_canonname){
free (ahostbuf);
ahostbuf = strdup (res0->ai_canonname);
ahostbuf = __strdup (res0->ai_canonname);
if (ahostbuf == NULL) {
perror ("rexec: strdup");
return (-1);

1
intl/dcigettext.c
View File

@ -131,6 +131,7 @@ extern int errno;
/* Rename the non ANSI C functions. This is required by the standard
because some ANSI C functions will require linking with this object
file and the name space must not be polluted. */
# define strdup __strdup
# define getcwd __getcwd
# ifndef stpcpy
# define stpcpy __stpcpy

6
intl/finddomain.c
View File

@ -124,18 +124,12 @@ _nl_find_domain (const char *dirname, char *locale,
alias_value = _nl_expand_alias (locale);
if (alias_value != NULL)
{
#if defined _LIBC || defined HAVE_STRDUP
locale = strdup (alias_value);
if (locale == NULL)
return NULL;
#else
size_t len = strlen (alias_value) + 1;
locale = (char *) malloc (len);
if (locale == NULL)
return NULL;
memcpy (locale, alias_value, len);
#endif
}
/* Now we determine the single parts of the locale name. First

2
locale/loadarchive.c
View File

@ -462,7 +462,7 @@ _nl_load_locale_from_archive (int category, const char **namep)
if (__glibc_unlikely (lia == NULL))
return NULL;
lia->name = strdup (*namep);
lia->name = __strdup (*namep);
if (__glibc_unlikely (lia->name == NULL))
{
free (lia);

2
locale/setlocale.c
View File

@ -283,7 +283,7 @@ setlocale (int category, const char *locale)
if (__glibc_unlikely (strchr (locale, ';') != NULL))
{
/* This is a composite name. Make a copy and split it up. */
locale_copy = strdup (locale);
locale_copy = __strdup (locale);
if (__glibc_unlikely (locale_copy == NULL))
{
__libc_rwlock_unlock (__libc_setlocale_lock);

2
posix/spawn_faction_addopen.c
View File

@ -34,7 +34,7 @@ posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *file_actions,
if (!__spawn_valid_fd (fd))
return EBADF;
char *path_copy = strdup (path);
char *path_copy = __strdup (path);
if (path_copy == NULL)
return ENOMEM;

2
stdlib/putenv.c
View File

@ -60,7 +60,7 @@ putenv (char *string)
int use_malloc = !__libc_use_alloca (name_end - string + 1);
if (__builtin_expect (use_malloc, 0))
{
name = strndup (string, name_end - string);
name = __strndup (string, name_end - string);
if (name == NULL)
return -1;
}

18
stdlib/stdlib.h
View File

@ -25,16 +25,13 @@
#include <bits/libc-header-start.h>
/* Get size_t, wchar_t and NULL from <stddef.h>. */
#define __need_size_t
#ifndef __need_malloc_and_calloc
# define __need_wchar_t
# define __need_NULL
#endif
#define __need_size_t
#define __need_wchar_t
#define __need_NULL
#include <stddef.h>
__BEGIN_DECLS
#ifndef __need_malloc_and_calloc
#define _STDLIB_H 1
#if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H
@ -434,10 +431,6 @@ extern int lcong48_r (unsigned short int __param[7],
# endif /* Use misc. */
#endif /* Use misc or X/Open. */
#endif /* don't just need malloc and calloc */
#ifndef __malloc_and_calloc_defined
# define __malloc_and_calloc_defined
__BEGIN_NAMESPACE_STD
/* Allocate SIZE bytes of memory. */
extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
@ -445,9 +438,7 @@ extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
extern void *calloc (size_t __nmemb, size_t __size)
__THROW __attribute_malloc__ __wur;
__END_NAMESPACE_STD
#endif
#ifndef __need_malloc_and_calloc
__BEGIN_NAMESPACE_STD
/* Re-allocate the previously allocated block
in PTR, making the new block SIZE bytes long. */
@ -944,9 +935,6 @@ extern int ttyslot (void) __THROW;
# include <bits/stdlib-ldbl.h>
#endif
#endif /* don't just need malloc and calloc */
#undef __need_malloc_and_calloc
__END_DECLS
#endif /* stdlib.h */

59
string/bits/string2.h
View File

@ -112,65 +112,6 @@
#endif
/* We need the memory allocation functions for inline strdup().
Referring to stdlib.h (even minimally) is not allowed
in any of the tight standards compliant modes. */
#ifdef __USE_MISC
# if !defined _HAVE_STRING_ARCH_strdup || !defined _HAVE_STRING_ARCH_strndup
# define __need_malloc_and_calloc
# include <stdlib.h>
# endif
# ifndef _HAVE_STRING_ARCH_strdup
extern char *__strdup (const char *__string) __THROW __attribute_malloc__;
# define __strdup(s) \
(__extension__ (__builtin_constant_p (s) && __string2_1bptr_p (s) \
? (((const char *) (s))[0] == '\0' \
? (char *) calloc ((size_t) 1, (size_t) 1) \
: ({ size_t __len = strlen (s) + 1; \
char *__retval = (char *) malloc (__len); \
if (__retval != NULL) \
__retval = (char *) memcpy (__retval, s, __len); \
__retval; })) \
: __strdup (s)))
# if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
# define strdup(s) __strdup (s)
# endif
# endif
# ifndef _HAVE_STRING_ARCH_strndup
extern char *__strndup (const char *__string, size_t __n)
__THROW __attribute_malloc__;
# define __strndup(s, n) \
(__extension__ (__builtin_constant_p (s) && __string2_1bptr_p (s) \
? (((const char *) (s))[0] == '\0' \
? (char *) calloc ((size_t) 1, (size_t) 1) \
: ({ size_t __len = strlen (s) + 1; \
size_t __n = (n); \
char *__retval; \
if (__n < __len) \
__len = __n + 1; \
__retval = (char *) malloc (__len); \
if (__retval != NULL) \
{ \
__retval[__len - 1] = '\0'; \
__retval = (char *) memcpy (__retval, s, \
__len - 1); \
} \
__retval; })) \
: __strndup (s, n)))
# ifdef __USE_XOPEN2K8
# define strndup(s, n) __strndup (s, n)
# endif
# endif
#endif /* Use misc. or use GNU. */
#ifndef _FORCE_INLINES
# undef __STRING_INLINE
#endif

4
sunrpc/svc_simple.c
View File

@ -87,7 +87,7 @@ __registerrpc (u_long prognum, u_long versnum, u_long procnum,
transp = svcudp_create (RPC_ANYSOCK);
if (transp == NULL)
{
buf = strdup (_("couldn't create an rpc server\n"));
buf = __strdup (_("couldn't create an rpc server\n"));
goto err_out;
}
}
@ -103,7 +103,7 @@ __registerrpc (u_long prognum, u_long versnum, u_long procnum,
pl = (struct proglst_ *) malloc (sizeof (struct proglst_));
if (pl == NULL)
{
buf = strdup (_("registerrpc: out of memory\n"));
buf = __strdup (_("registerrpc: out of memory\n"));
goto err_out;
}
pl->p_progname = progname;

4
sysdeps/posix/getaddrinfo.c
View File

@ -536,7 +536,7 @@ gaih_inet (const char *name, const struct gaih_service *service,
}
else
{
namebuf = strndup (name, scope_delim - name);
namebuf = __strndup (name, scope_delim - name);
if (namebuf == NULL)
{
assert (!malloc_name);
@ -1141,7 +1141,7 @@ gaih_inet (const char *name, const struct gaih_service *service,
malloc_canonbuf = false;
else
{
canon = strdup (canon);
canon = __strdup (canon);
if (canon == NULL)
{
result = -EAI_MEMORY;