Where can I find more information about the D_GLIBCXX_DEBUG and DNDEBUG flags?

Question

I am trying to understand the D_GLIBCXX_DEBUG and DNDEBUG flags.

But I can not find information about them.

Can anyone explain what they are doing? and where can I learn more about them?

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Pratik deoghare Feb 01 '13 at 23:51

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1 answer

Mankarse · Answer 1 · 2013-02-01T23:59:29+0000

Both use - D , which defines the macro specified after D

When NDEBUG defined, assert does not check its argument.

When _GLIBCXX_DEBUG defined, it activates debug mode in libstdc++ (causing libstdc++ to perform checks on various operations).