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[Bug c/49820] Explicit check for integer negative after abs optimized away
- From: "schwab at linux-m68k dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 23 Jul 2011 07:20:40 +0000
- Subject: [Bug c/49820] Explicit check for integer negative after abs optimized away
- Auto-submitted: auto-generated
- References: <bug-49820-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49820
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> 2011-07-23 07:20:20 UTC ---
Integer overflow is undefined. You have to check before the fact, or compile
with -fwrapv.