[Bug c/64440] -Wdiv-by-zero false negative on const variables
mpolacek at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Jan 7 08:22:00 GMT 2015
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64440
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Jan 7 08:21:50 2015
New Revision: 219279
URL: https://gcc.gnu.org/viewcvs?rev=219279&root=gcc&view=rev
Log:
PR c/64440
* c-common.c (c_fully_fold_internal): Warn for division and modulo
if orig_op1 isn't INTEGER_CST, op1 is INTEGER_CST and is zero.
* gcc.dg/pr64440.c: New test.
* c-c++-common/pr56607.c: Don't limit dg-warnings to C++.
Added:
trunk/gcc/testsuite/gcc.dg/pr64440.c
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/c-c++-common/pr56607.c
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