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From 84863a1c4dc8cca8fb0f6f670f67779cdd2d543b Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Sat, 30 Apr 2022 14:09:00 +0200
Subject: [PATCH] string: Avoid syntax error on glibc systems with GCC 11.
Reported by Tom Tromey <tromey@adacore.com> in
<https://lists.gnu.org/archive/html/bug-gnulib/2022-04/msg00075.html>
and by Satadru Pramanik <satadru@umich.edu> in
<https://lists.gnu.org/archive/html/bug-gnulib/2022-04/msg00076.html>.
* lib/string.in.h (strndup): Don't rededeclare strndup if it is defined
as a macro.
---
ChangeLog | 10 ++++++++++
lib/string.in.h | 4 ++--
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/lib/string.in.h b/lib/string.in.h
index b6840fa91..33160b252 100644
--- a/lib/string.in.h
+++ b/lib/string.in.h
@@ -583,7 +583,7 @@ _GL_FUNCDECL_RPL (strndup, char *,
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
_GL_CXXALIAS_RPL (strndup, char *, (char const *__s, size_t __n));
# else
-# if !@HAVE_DECL_STRNDUP@ || __GNUC__ >= 11
+# if !@HAVE_DECL_STRNDUP@ || (__GNUC__ >= 11 && !defined strndup)
_GL_FUNCDECL_SYS (strndup, char *,
(char const *__s, size_t __n)
_GL_ARG_NONNULL ((1))
@@ -593,7 +593,7 @@ _GL_CXXALIAS_SYS (strndup, char *, (char const *__s, size_t __n));
# endif
_GL_CXXALIASWARN (strndup);
#else
-# if __GNUC__ >= 11
+# if __GNUC__ >= 11 && !defined strndup
/* For -Wmismatched-dealloc: Associate strndup with free or rpl_free. */
_GL_FUNCDECL_SYS (strndup, char *,
(char const *__s, size_t __n)
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