[Bug rtl-optimization/18294] [4.0 Regression] ICE in rtl_verify_flow_info during bootstrap

[sje at cup dot hp dot com]

------- Additional Comments From sje at cup dot hp dot com  2004-11-05 22:51 -------
I still don't understand the bug but it seems to be related to the code inside
the   POINTERS_EXTEND_UNSIGNED ifdef in function.c.  If I comment this out
things compile, if I leave it in and put a call to verify_flow_info() before the
return 1 in that if block then verify_flow_info will cause an abort.  A call
just before the if statement will not abort so this appears to be the code that
is corrupting the cfg.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18294