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How do I disable the GCC warning that the #warning directive is a GCC extension?

When using the #warning directive instead of one warning, I get two — the one I generate, plus an additional warning: #warning is a GCC extension [enabled by default] .

I can suppress the result of the #warning directive itself, with -Wno-cpp , but this is the opposite of what I want.

I can get around this using #pragma message() , but it seems that the #warning directive is pretty pointless - there is no way to suppress this warning?

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gcc compiler-warnings gcc-warning warnings
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3 answers

And, it seems, the -pedantic option enables this warning, and there is no specific override for it, as in most other GCC warnings. Removing -pedantic removes the warning warning.

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 #ifdef __GNUC__ #warning "no warning here!" #endif

will compile with or without gcc even with -pedantic , but it will still give a warning (and will not work if warnings are overloaded to errors).

UPDATE: According to this related question , there is no clean solution to selectively turn off gnu-specific warnings #pragma s

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Actually, the following should work. With this, you can suppress / ignore gcc warnings.

 #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wcpp" ... #pragma GCC diagnostic pop
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