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Date: Wed, 24 May 2023 17:24:57 +0200
From: Jₑₙₛ Gustedt <>
To: Rich Felker <>
Subject: Re: [C23 divers headers 16/17] C23: add the nullptr_t type


on Wed, 24 May 2023 10:49:06 -0400 you (Rich Felker <>)

> One thought: For testing, you should be able to pass
> -D__STDC_VERSION__=whatever to override it, no?

Probably. That doesn't solve the problem, though, of knowing during
transition if a C23 feature (which isn't a macro) is yet supported by a
compiler. The clang feature tests are a very good tool for that. I also
have something that mimics this with gcc, but you probably don't want
that in musl, don't you ?-)


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