From: Florian Weimer <fweimer@redhat.com>
Date: Mon, 6 Nov 2023 11:57:12 +0000 (+0100)
Subject: gcc.c-torture/execute/builtins/fputs.c: fputs_unlocked prototype
X-Git-Tag: basepoints/gcc-15~4987
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c1d3e2866659d13f4ab0d8826d59037265eae27;p=thirdparty%2Fgcc.git

gcc.c-torture/execute/builtins/fputs.c: fputs_unlocked prototype

Current glibc headers only declare fputs_unlocked for _GNU_SOURCE,
so define it to obtain an official prototype.

Add a fallback prototype declaration for other systems that do not
have fputs_unlocked.  This seems to the most straightforward approach
to avoid an implicit function declaration, without reducing test
coverage and introducing ongoing maintenance requirements (e.g.,
FreeBSD added fputs_unlocked support fairly recently).

gcc/testsuite/

	* gcc.c-torture/execute/builtins/fputs.c (_GNU_SOURCE):
	Define.
	(fputs_unlocked): Declare.
---

diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c b/gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c
index 93fa9736449c..a94ea9933641 100644
--- a/gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c
+++ b/gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c
@@ -5,9 +5,13 @@
 
    Written by Kaveh R. Ghazi, 10/30/2000.  */
 
+#define _GNU_SOURCE /* For fputs_unlocked.  */
 #include <stdio.h>
 extern void abort(void);
 
+/* Not all systems have fputs_unlocked.  See fputs-lib.c.  */
+extern int (fputs_unlocked) (const char *, FILE *);
+
 int i;
 
 void