Bug#151675: gcc: infinite loop with -O on arm

["Gerrit Pape" <pape@smarden.org>]

Package: gcc
Severity: normal

Hello,

compiling tryulong32.c on arm with gcc-2.95.2-13.1 and the -O option seems
to cause an infinite loop in cc1, it compiles fine without -O, it also
compiles fine on other architectures:

pape@debussy:~/bglibs-1.001$ gcc -W -Wall -o tryulong32.o -c tryulong32.c 
tryulong32.c:2: warning: return type of `main' is not `int'
pape@debussy:~/bglibs-1.001$ 

pape@debussy:~/bglibs-1.001$ gcc -W -Wall -O -o tryulong32.o -c tryulong32.c &
tryulong32.c:2: warning: return type of `main' is not `int'
[...wait...]
pape@debussy:~/bglibs-1.001$ ps
  PID TTY          TIME CMD
31587 pts/1    00:00:00 bash
31835 pts/1    00:00:00 gcc
31837 pts/1    00:29:40 cc1
31874 pts/1    00:00:00 ps
pape@debussy:~/bglibs-1.001$ 

This also seems to be an issue with gcc-2.95.4, please see this build log:
http://buildd.debian.org/fetch.php?&pkg=bglibs&ver=1.001-1&arch=arm&stamp=1025238522&file=log&as=raw

tryulong32.c
---
void main()
{
  unsigned long u;
  u = 1;
  u += u; u += u; u += u; u += u; u += u; u += u; u += u; u += u;
  u += u; u += u; u += u; u += u; u += u; u += u; u += u; u += u;
  u += u; u += u; u += u; u += u; u += u; u += u; u += u; u += u;
  u += u; u += u; u += u; u += u; u += u; u += u; u += u; u += u;
  if (!u) _exit(0);
  _exit(1);
}
---

Regards, Gerrit.


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