https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95872
Bug ID: 95872
Summary: Duplicated warning message in "-Wlogical-op"
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: haoxintu at gmail dot com
CC: mpolacek at gcc dot gnu.org
Target Milestone: ---
This code, bug.cc, GCC emits two duplicated warning messages about it.
$cat bug.cc
int a = 10;
decltype(( a or a ) ? 1:0) var = 0;
$g++ -c -Wlogical-op bug.cc
bug.cc:2:14: warning: logical 'or' of equal expressions [-Wlogical-op]
2 | decltype(( a or a ) ? 1:0) var = 0;
| ~~^~~~
bug.cc:2:14: warning: logical 'or' of equal expressions [-Wlogical-op]
All GCC-6 to GCC-trunk versions have this issue.
