Public bug reported:
$ cat minimal.c
#include <stdint.h>
#define PERF_MAX_STACK_DEPTH 255
struct perf_callchain_entry {
uint64_t nr;
uint64_t ip[PERF_MAX_STACK_DEPTH];
};
struct perf_callchain_entry entry = {
.nr = 0,
};
int main(void)
{
int i;
volatile unsigned long long x;
for (i = 0; i < entry.nr; i++)
x = entry.ip[i];
return 0;
}
$ gcc-4.4 -fmudflap -fprofile-generate -c minimal.c -o minimal.o
$ gcc-4.6 -fmudflap -fprofile-generate -c minimal.c -o minimal.o
$ gcc-4.7 -fmudflap -fprofile-generate -c minimal.c -o minimal.o (actually
gcc-snapshot but same efffect)
minimal.c: In function '_GLOBAL__sub_I_00099_1_entry':
minimal.c:23:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-snapshot/README.Bugs> for instructions.
Preprocessed source stored into /tmp/cckrXkkP.out file, please attach this to
your bugreport.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gcc-snapshot 20111010-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22
Uname: Linux 3.0.0-17-generic x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Fri May 4 08:38:23 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: gcc-snapshot
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gcc-defaults (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug oneiric running-unity
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https://bugs.launchpad.net/bugs/994402
Title:
combining -fprofile-generate and -fmudflap causes gcc to segfault
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