Question

In Visual C++, it’s possible to use #pragma warning (disable: ...). Also I found that in GCC you can override per file compiler flags. How can I do this for “next line”, or with push/pop semantics around areas of code using GCC?

Answer 1

It appears this can be done. I’m unable to determine the version of GCC that it was added, but it was sometime before June 2010.

Here’s an example:

#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 */