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

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.

2 files changed, 4 insertions, 16 deletions

diff --git a/stdlib/putenv.c b/stdlib/putenv.c
index 85890fec26..c0488fc505 100644
--- a/stdlib/putenv.c
+++ b/stdlib/putenv.c
@@ -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;
 	}
diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index 292c6a2f05..7cfbcafe79 100644
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -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  */