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authorJoseph Myers <joseph@codesourcery.com>2014-11-26 00:45:19 +0000
committerJoseph Myers <joseph@codesourcery.com>2014-11-26 00:45:19 +0000
commitc82f5c0ce5c1c0180fca311ceb29fd2d59da7441 (patch)
treea6365743912e255a581211460da20a88f1cfd97f /setjmp/jmpbug.c
parent439e1ad6d04e24f76f92ff7f61153fbe489559b9 (diff)
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Fix warning in setjmp/jmpbug.c.
This patch fixes a "set but not used" warning in setjmp/jmpbug.c. A variable is used only to store the result of alloca. A cast to void is added to avoid the warning, and the variable is made volatile to ensure the call to alloca isn't optimized away for being unused. Tested for x86_64. * setjmp/jmpbug.c (test): Make foo volatile and cast it to void.
Diffstat (limited to 'setjmp/jmpbug.c')
-rw-r--r--setjmp/jmpbug.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/setjmp/jmpbug.c b/setjmp/jmpbug.c
index 125977b2f7..8594c5a8a7 100644
--- a/setjmp/jmpbug.c
+++ b/setjmp/jmpbug.c
@@ -14,7 +14,7 @@ static void
test (int x)
{
jmp_buf buf;
- char *foo;
+ char *volatile foo;
int arr[100];
arr[77] = x;
@@ -25,6 +25,7 @@ test (int x)
}
foo = (char *) alloca (128);
+ (void) foo;
sub5 (buf);
}