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[Bug middle-end/42688] gcc 4.3.3 with -O2 thinks a often non-zero expression is always zero
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Feb 2010 20:04:51 -0000
- Subject: [Bug middle-end/42688] gcc 4.3.3 with -O2 thinks a often non-zero expression is always zero
- References: <bug-42688-17484@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from pinskia at gcc dot gnu dot org 2010-02-07 20:04 -------
You can gzip the preprocessed source if needed. Also It might be the case we
are jump threading in one case and not in the other which causes the zero
expression to show up and that causes glibc's headers to produce the warning
...
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |middle-end
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42688