http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55578
Bug #: 55578
Summary: Disabling warnings inside macro definition doesn't
work
Classification: Unclassified
Product: gcc
Version: 4.6.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: rub...@gmail.com
When compiling following code with just -Wall option I'm getting below
mentioned warning.
#define FF() \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wunused-variable\"") \
{int x;} \
_Pragma("GCC diagnostic pop")
int main()
{
FF();
return 0;
}
In function 'int main()':
warning: unused variable 'x' [-Wunused-variable]
But when I also specify -no-integrated-cpp or -save-temps options the warning
doesn't show up.
It looks like when preprocessor and compiler work in one shop the warning
doesn't get disabled. BTW this happens for any warning not just with
unused-variable one.
GCC version is: 4.6.2
Command line is: gcc <file-name> -Wall
System is: Linux 2.6.18-238.el5 #1 SMP Sun Dec 19 14:22:44 EST 2010 x86_64
x86_64 x86_64 GNU/Linux
