Problem when using optimization on aix 5.2 and gcc 4.1.1

[Joe Buck]

On Mon, May 21, 2007 at 07:06:47PM +0200, Thomas Mittelstaedt wrote:
> Hello,
> 
> We have a large app with a lot of static libraries in it (and I mean a  
> lot, about 20) and it compiles and links successfully. If I compile it  
> without optimiztion turned on
> (-O2 or some more subtle with -O and others), the program also runs.
> With optimizations, though, the program would crash.

While compiler bugs are possible, it is much more likely that
it is a program bug.  Common causes are uninitialized memory or heap
corruption; the effects of this tend to change with optimization.