https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95873
Bug ID: 95873
Summary: Duplicated warning message "'class' tag used in naming
'union a'"
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.
$cat bug.cc
union a{};
auto var = new (typename :: a );
$g++ -c -fpermissive bug.cc
bug.cc:2:29: warning: 'class' tag used in naming 'union a' [-fpermissive]
2 | auto var = new (typename :: a );
| ^
bug.cc:1:7: note: 'union a' was previously declared here
1 | union a{};
| ^
bug.cc:2:29: warning: 'class' tag used in naming 'union a' [-fpermissive]
2 | auto var = new (typename :: a );
| ^
bug.cc:1:7: note: 'union a' was previously declared here
1 | union a{};
| ^
All GCC-6 to GCC-trunk versions have this issue.
