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[Bug middle-end/54109] New: ICE at tree-ssa-structalias.c:3049 in get_constraint_for_component_ref
- From: "merkil at savhon dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 27 Jul 2012 23:04:31 +0000
- Subject: [Bug middle-end/54109] New: ICE at tree-ssa-structalias.c:3049 in get_constraint_for_component_ref
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54109
Bug #: 54109
Summary: ICE at tree-ssa-structalias.c:3049 in
get_constraint_for_component_ref
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: merkil@savhon.org
Hello !
I was trying to compile the Linux 3.5 kernel with GCC 4.8.0 as of 20120725 (at
-O{2,3}) when it ICEd on kernel/cpuset.c. Here is a reduced testcase that
reproduces the issue :
$ cat cpuset.c
typedef struct
{
unsigned long bits[4];
} nodemask_t;
struct cpuset
{
long flags;
nodemask_t mems_allowed;
struct cpuset *parent;
} b;
void func1(unsigned long *p1, int p2)
{
p1[p2 - 1] = 0;
}
void func2(nodemask_t *p1, int p2)
{
func1(p1->bits, p2);
}
void func3(void)
{
func2(&b.mems_allowed, 0);
}
$ xgcc -c cpuset.c -O2
cpuset.c: In function âfunc3â:
cpuset.c:26:1: internal compiler error: in get_constraint_for_component_ref, at
tree-ssa-structalias.c:3049
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
GCC 4.7.0 compiles it fine.