Public bug reported:
This autoconf test works on x86, but appears to fail on ARM when built
with optimisation. It worked fine with gcc-4.6, and fails with 4.7.
Versions here were all from current saucy:
gcc-4.6: 4.6.4-3ubuntu1
gcc-4.7: 4.7.3-6ubuntu1
gcc-4.8: 4.8.1-7ubuntu1
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ gcc-4.6 -o conftest -O2 stack.c
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ ./conftest ; echo $?
0
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ gcc-4.7 -o conftest -O2 stack.c
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ ./conftest ; echo $?
1
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ gcc-4.8 -o conftest -O2 stack.c
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ ./conftest ; echo $?
1
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ gcc-4.8 -o conftest -O1 stack.c
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ ./conftest ; echo $?
1
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ gcc-4.8 -o conftest -O0 stack.c
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ ./conftest ; echo $?
0
(saucy-kde)adconrad@shiva:~/librep-0.90.2$ cat stack.c
#include <stdlib.h>
void inner (char *foo) {
char bar;
exit (!(foo >= &bar));
}
void main () {
char foo;
inner (&foo);
}
** Affects: gcc-4.7 (Ubuntu)
Importance: Undecided
Status: New
** Affects: gcc-4.8 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: gcc-4.7 (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1203496
Title:
micompilation of autoconf stack growth test at -O > 0 on ARM
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.7/+bug/1203496/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
