Start an IDE and type include < (without # in the start of the line).
(http://img684.imageshack.us/img684/9068/crashb.png) (http://img684.imageshack.us/i/crashb.png/)
Windows XP SP3, Pelles C 6.50 RC4.
650 rc4 64 bit does the same thing on windows 7.
It will throw an unhandled exception anytime you do "include <" anywhere on the first line of a source code.
RC4 still does the same on Windows XP SP3, 32bit
Ralf