[Bug middle-end/20493] [4.0/4.1 Regression] Bootstrap failure because of aliased symbols

[dave at hiauly1 dot hia dot nrc dot ca]

------- Additional Comments From dave at hiauly1 dot hia dot nrc dot ca  2005-03-18 03:26 -------
Subject: Re:  [4.0/4.1 Regression] Bootstrap failure because of aliased symbols

> The bootstrap still fails with your suggestion.  fold_widened_comparison
> returns here:
> 
>   if (arg0_unw == arg0)
>     return NULL_TREE;
> 
> as the function pointer is not being widen by the int cast of the
> function pointer.

We actually lose the CONVERT_EXPR in the call to fold_sign_changed_comparison
(fold-const.c:9166).  Previously, we didn't.  However, I'm not sure why.

Dave


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20493