ice on valid code: switch in a while with -O2

[Eric Botcazou]

> % gcc -O2 -c bug.c
> bug.c: In function `main':
> bug.c:18: internal compiler error: Segmentation Fault
> Please submit a full bug report,
> with preprocessed source if appropriate.

Thanks for the bug report.  However, you need to file a PR with Bugzilla,
see http://gcc.gnu.org/bugs.html for instructions.

--
Eric Botcazou