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[Bug middle-end/39625] [4.5 regression] Revision 145338 breaks ability to build Ada
- From: "ebotcazou at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Apr 2009 07:57:22 -0000
- Subject: [Bug middle-end/39625] [4.5 regression] Revision 145338 breaks ability to build Ada
- References: <bug-39625-13830@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #29 from ebotcazou at gcc dot gnu dot org 2009-04-16 07:57 -------
Richard,
the removal of
/* If the RHS of the MODIFY_EXPR may throw or make a nonlocal goto
and the LHS is a user variable, then we need to introduce a formal
temporary. This way the optimizers can determine that the user
variable is only modified if evaluation of the RHS does not throw. */
from is_gimple_reg_or_call_rhs breaks __builtin_setjmp / __builtin_longjmp (and
probably nonlocal gotos).
--
ebotcazou at gcc dot gnu dot org changed:
What |Removed |Added
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CC| |rguenth at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39625