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GNU C Library master sources branch master updated. glibc-2.20-255-gc82f5c0
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 26 Nov 2014 00:45:44 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.20-255-gc82f5c0
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=c82f5c0ce5c1c0180fca311ceb29fd2d59da7441
commit c82f5c0ce5c1c0180fca311ceb29fd2d59da7441
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Nov 26 00:45:19 2014 +0000
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.
diff --git a/ChangeLog b/ChangeLog
index 23fba36..d6cedab 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-11-26 Joseph Myers <joseph@codesourcery.com>
+
+ * setjmp/jmpbug.c (test): Make foo volatile and cast it to
+ void.
+
2014-11-25 Joseph Myers <joseph@codesourcery.com>
* stdio-common/tst-printf-round.c (test_hex_in_one_mode): Make
diff --git a/setjmp/jmpbug.c b/setjmp/jmpbug.c
index 125977b..8594c5a 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);
}
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
setjmp/jmpbug.c | 3 ++-
2 files changed, 7 insertions(+), 1 deletions(-)
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