Selectively disable GCC warnings for only part of a translation unit

Question

What's the closest GCC equivalent to this MSVC preprocessor code?

#pragma warning( push )                    // Save the current warning state. #pragma warning( disable : 4723 )          // C4723: potential divide by 0 // Code which would generate warning 4723. #pragma warning( pop )                     // Restore warnings to previous state. 

We have code in commonly included headers which we do not want to generate a specific warning for. However, we want files which include those headers to continue to generate that warning (if the project has that warning enabled).

Answer 1

This is possible in GCC since version 4.6, or around June 2010 in the trunk.

Here's an example:

#pragma GCC diagnostic push #pragma GCC diagnostic error "-Wuninitialized"     foo(a);         /* error is given for this one */ #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wuninitialized"     foo(b);         /* no diagnostic for this one */ #pragma GCC diagnostic pop     foo(c);         /* error is given for this one */ #pragma GCC diagnostic pop     foo(d);         /* depends on command line options */ 

Answer 2

The closest thing is the GCC diagnostic pragma, #pragma GCC diagnostic [warning|error|ignored] "-Wwhatever". It isn't very close to what you want, and see the link for details and caveats.