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authorRoland McGrath <roland@gnu.org>1996-01-13 00:46:48 +0000
committerRoland McGrath <roland@gnu.org>1996-01-13 00:46:48 +0000
commit02ac66c50d2faf11677911fd99579869f24795ef (patch)
treebafee0af52b84a7fe2f40725fa158ab6e7d1d6e1 /string/string.h
parentd94d8f2a5960683c324e184f1240b0c26fd3bc09 (diff)
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Fri Jan 12 13:40:01 1996 Roland McGrath <roland@churchy.gnu.ai.mit.edu>cvs/libc-960113
* posix/gnu/types.h: Moved to sysdeps/generic/gnu/types.h. * posix/glob.c (glob): Add parens in glob call flags arg for GLOB_BRACE case. * string/string.h (strdupa): New macro. * stdio-common/vfscanf.c (%[): Grok ] as first char in set, not terminator on empty set. From drepper.
Diffstat (limited to 'string/string.h')
-rw-r--r--string/string.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/string/string.h b/string/string.h
index 0f99531..95dcba0 100644
--- a/string/string.h
+++ b/string/string.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -91,6 +91,16 @@ extern size_t strxfrm __P ((char *__dest, __const char *__src, size_t __n));
extern char *strdup __P ((__const char *__s));
#endif
+#if defined (__USE_GNU) && defined (__GNUC__)
+/* Duplicate S, returning an identical alloca'd string. */
+#define strdupa(s) \
+({ \
+ const char *__old = (s); \
+ size_t __len = strlen (__old) + 1; \
+ memcpy (__builtin_alloca (__len), __old, __len); \
+})
+#endif
+
/* Find the first occurrence of C in S. */
extern char *strchr __P ((__const char *__s, int __c));
/* Find the last occurrence of C in S. */