https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70888
Bug ID: 70888
Summary: #pragma diagnostic ignored -Wlong-long ineffective
with __LONG_LONG_MAX__ in c++98 mode
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
In C++ 98 mode, #pragma GCC diagnostic ignored "-Wlong-long" has no effect.
The pragma works as expected in C89 mode.
$ cat u.cpp && /home/msebor/build/gcc-66561/gcc/xgcc
-B/home/msebor/build/gcc-66561/gcc -S -Wall -Wextra -Wpedantic -std=c++98 -xc++
u.cpp
void f ()
{
#pragma GCC diagnostic ignored "-Wlong-long"
long long x = __LONG_LONG_MAX__;
}
u.cpp:5:19: warning: use of C++11 long long integer constant [-Wlong-long]
long long x = __LONG_LONG_MAX__;
^
u.cpp: In function ‘void f()’:
u.cpp:5:15: warning: unused variable ‘x’ [-Wunused-variable]
long long x = __LONG_LONG_MAX__;
^
