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Editorial Team
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Asked: 2026-06-13T21:52:40+00:00

In an xcode4.5 project I have turned on pedantic warnings. But this now gives

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In an project I have turned on pedantic warnings. But this now gives me a warning about using #warning:

Lexical preprocessor issue
#warning is language extension

Firstly, I’d like to know why this is happening and how to stop it (with out removing the #warning).

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1 Answer

  1. Editorial Team

    The reason it’s being generated is because #warning is an extension to the ISO standard and that is what -pedantic is about.

    It looks like only a #pragma will turn it off as no -Wno-xxx flags appear available for language extensions.

    #pragma clang diagnostic push
#pragma clang diagnostic ignored "-pedantic"

#warning blah blah blah

#pragma clang diagnostic pop
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