[Bug c/25575] New: some uninitialized warning disappear when compile without -O
lidaobing at gmail dot com
gcc-bugzilla@gcc.gnu.org
Tue Dec 27 12:16:00 GMT 2005
Hello,
see example:
---->
$ cat warning.c
int main()
{
int i;
return i;
}
$ gcc -Wall warning.c
$ gcc -Wall -O0 warning.c
$ gcc -Wall -O warning.c
warning.c: In function âÂÂmainâÂÂ:
warning.c:4: warning: âÂÂiâ is used uninitialized in this function
warning.c
$ gcc -Wall -O1 warning.c
warning.c: In function âÂÂmainâÂÂ:
warning.c:4: warning: âÂÂiâ is used uninitialized in this function
$ gcc -Wall -O2 warning.c
warning.c: In function âÂÂmainâÂÂ:
warning.c:4: warning: âÂÂiâ is used uninitialized in this function
$ gcc -Wall -O3 warning.c
warning.c: In function âÂÂmainâÂÂ:
warning.c:4: warning: âÂÂiâ is used uninitialized in this function
$
<------
--
Summary: some uninitialized warning disappear when compile
without -O
Product: gcc
Version: 4.0.2
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: lidaobing at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25575
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