[Bug rtl-optimization/18081] New: Infinite memory allocation on -O3
trauscher at loytec dot com
gcc-bugzilla@gcc.gnu.org
Wed Oct 20 15:40:00 GMT 2004
When compiling the following code, cc1
enters an infinite loop allocating memory until
virtual memory is exhausted.
arm-rtems-elf-gcc-3.4.2 -O3 -c -otest.o test.c
The bug disappears when using -O2 or when
using -O3 with -fno-inline-functions or
-fno-gcse
It also disappears by removing lines from the
program.
test.c:
int rd(int *p) {
if (p<((int*)4)) return 0;
return *p;
}
void wr(int *p) {
if (p<((int*)4)) return;
*p = 0;
}
void test(void *p)
{
int i;
int a[2];
for(i=0;i<2;i++)
{
wr(p);
a[i]=rd(p);
}
}
--
Summary: Infinite memory allocation on -O3
Product: gcc
Version: 3.4.2
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: trauscher at loytec dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC host triplet: i386-linux
GCC target triplet: arm-rtems-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18081
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