[Issue 23867] ImportC: undefined identifier `__builtin_isnan`

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23867

Dlang Bot <dlang-bot at dlang.rocks> changed:

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--- Comment #3 from Dlang Bot <dlang-bot at dlang.rocks> ---
@bachmeil updated dlang/dmd pull request #15147 "Fix 23867 and 23869" fixing
this issue:

- Fix issues 23867 and 23869 - define __builtin_isfinite and __builtin_isnan

  These GNU C builtins are referenced by macros such as:
  * ISNAN
  * R_FINITE

https://github.com/dlang/dmd/pull/15147

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