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[Bug c++/60212] no warning for unused variables
- From: "egallager at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 23 Aug 2017 20:04:07 +0000
- Subject: [Bug c++/60212] no warning for unused variables
- Auto-submitted: auto-generated
- References: <bug-60212-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60212
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-23
CC| |egallager at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
Confirmed that clang warns while g++ doesn't.
$ /usr/local/bin/g++ -fwhole-program -O3 -std=c++11 -Wall -Wextra -Wunused
-pedantic -o 60212.exe 60212.cc
$ /sw/opt/llvm-3.1/bin/clang++ -fwhole-program -O3 -std=c++11 -Wall -Wextra
-Wunused -pedantic -o 60212c.exe 60212.cc
clang-3: warning: argument unused during compilation: '-fwhole-program'
60212.cc:5:7: warning: unused variable 'x' [-Wunused-variable]
S x(a);
^
1 warning generated.
$