Do these two source file(i.e. include\c_std\cstdlib and include\c_global\cstdlib) serve for different purposes whereas they contain similar content?

[Jonathan Wakely]

On 12/08/20 20:15 +0800, 孙世龙 sunshilong via Libstdc++ wrote:
>Hi, list
>
> These two source files (i.e. include\c_std\cstdlib and
>include\c_global\cstdlib) have almost same content.
> What is their own role?
> Do these two source files serve for different purposes whereas they
>contain similar content?

You can ignore the c_std one.

The headers in that directory are only used if you build gcc with
--enable-cheaders=c_std but nobody does that, and they aren't properly
maintained any more, and they probably don't work.