librep workarounded it in 0.90.2-1.4ubuntu1.
** Changed in: librep (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1203496
Title:
micompilation of autoconf stack growth test at -O > 0 on ARM
Status in gcc:
Invalid
Status in Linaro GCC:
Invalid
Status in gcc-4.7 package in Ubuntu:
Invalid
Status in gcc-4.8 package in Ubuntu:
Invalid
Status in librep package in Ubuntu:
Fix Released
Bug description:
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);
}
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