[Issue 23869] New: ImportC: undefined identifier `isfinite`

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23869

          Issue ID: 23869
           Summary: ImportC: undefined identifier `isfinite`
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: lance at lancebachmeier.com

This code

if (!R_FINITE(x)) return x;

expands to

if (!__builtin_isfinite (x)) return x;

It is fixed by adding this to the .c file:

#define __builtin_isfinite finite

--