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[Bug middle-end/81320] New: [7/8] -Wlogical-op diagnostic depends on comparison' order
- From: "dimhen at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 05 Jul 2017 08:02:53 +0000
- Subject: [Bug middle-end/81320] New: [7/8] -Wlogical-op diagnostic depends on comparison' order
- Auto-submitted: auto-generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81320
Bug ID: 81320
Summary: [7/8] -Wlogical-op diagnostic depends on comparison'
order
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: dimhen at gmail dot com
Target Milestone: ---
r247015 FAIL
r249982 FAIL
$ cat x.c
int f1(int i)
{
if( i == 0 ||
i == 0 || /* PRESENT warning */
i == 1 )
return 0;
else
return 1;
}
int f2(int i)
{
if( i == 0 ||
i == 1 ||
i == 0) /* MISS warning */
return 0;
else
return 1;
}
$ /usr/local/gcc_current/bin/gcc -Wall -Wextra -O -Wlogical-op -c x.c
x.c: In function ‘f1’:
x.c:3:16: warning: logical ‘or’ of equal expressions [-Wlogical-op]
if( i == 0 ||
^~
$ /usr/local/gcc_current/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/usr/local/gcc_current/bin/gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc_current/libexec/gcc/x86_64-pc-linux-gnu/8.0.0/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
Target: x86_64-pc-linux-gnu
Configured with: /home/dimhen/src/gcc_current/configure
--prefix=/usr/local/gcc_current --enable-checking=yes,df,fold,rtl
--enable-languages=c,c++,lto --disable-multilib --enable-shared
--enable-threads=posix --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array --with-isl
--enable-libmpx --enable-offload-targets=nvptx-none --without-cuda-driver
--enable-gnu-indirect-function --with-tune=generic
Thread model: posix
gcc version 8.0.0 20170705 (experimental) [trunk revision 249982] (GCC)