https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80650
Bug ID: 80650
Summary: #pragma do not control -Wcpp
Product: gcc
Version: 7.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: akim.demaille at gmail dot com
Target Milestone: ---
Hi!
When compiling C, -Wcpp can be controlled by the diagnostics pragmas, but not
in C++ mode.
$ cat bar.c
#pragma GCC diagnostic ignored "-Wcpp"
#warning Foo
int i;
$ gcc-mp-7 -c bar.c
$ cp bar.c bar.cc
$ g++-mp-7 -c bar.c
bar.c:2:2: warning: #warning Foo [-Wcpp]
#warning Foo
^~~~~~~
$ g++-mp-7 --version
g++-mp-7 (MacPorts gcc7 7-20170420_0) 7.0.1 20170420 (prerelease)
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
I have observed this with 4.9, 5.5, 6.2 and 7.0.
Cheers!
