With -fipa-pta in flags, pta-field-2.c FAILs:
FAIL: gcc.c-torture/execute/pta-field-2.c execution, -O2
FAIL: gcc.c-torture/execute/pta-field-2.c execution, -O3 -fomit-frame-pointer
FAIL: gcc.c-torture/execute/pta-field-2.c execution, -O3 -g
FAIL: gcc.c-torture/execute/pta-field-2.c execution, -Os
FAIL: gcc.c-torture/execute/pta-field-2.c execution, -O2 -flto
Command line:
$ gcc -O2 -fipa-pta pta-field-2.i
$ ./a.out
Aborted
The code might be undefined, but even -fno-strict-aliasing doesn't help:
$ gcc -O2 -fipa-pta pta-field-2.i -fno-strict-aliasing
$ ./a.out
Aborted
Tested revisions:
r162653 - fail
r161659 - fail
r161170 - OK
--
Summary: [4.6 Regression] -fipa-pta causes FAIL: gcc.c-
torture/execute/pta-field-2.c execution
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zsojka at seznam dot cz
GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45120
