digitalmars.D.bugs - [Issue 22535] New: ImportC: gcc/clang math intrinsics are rejected.
- d-bugmail puremagic.com (30/30) Nov 21 2021 https://issues.dlang.org/show_bug.cgi?id=22535
https://issues.dlang.org/show_bug.cgi?id=22535 Issue ID: 22535 Summary: ImportC: gcc/clang math intrinsics are rejected. Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: normal Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: dave287091 gmail.com math.h on macOS uses the following gcc/clang builtins: `__builtin_fabs` `__builtin_fabsf` `__builtin_fabsl `__builtin_fabsl` `__builtin_inf` `__builtin_inff` `__builtin_infl` A much larger list of these builtins are described here: https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html It’s common for this header to be directly or transitively included. It is possible at least on macOS to avoid these if you preprocess with the -ffast-math flag as then it will counterintuitively declare extern versions of functions like isfinite instead of defining them as inline functions using these intrinsics. I don’t know if we want dmd to actually recognize all of these intrinsics. --
Nov 21 2021