https://issues.dlang.org/show_bug.cgi?id=23614
--- Comment #4 from Jacob Carlborg <[email protected]> --- Here's the full preprocessor logic: #if !defined BR_INT128 && !defined BR_UMUL128 #ifdef __SIZEOF_INT128__ #define BR_INT128 1 #elif _M_X64 #define BR_UMUL128 1 #endif #endif Then rest of the code checks for "BR_INT128" and "BR_UMUL128". Perhaps "_M_X64" should be undefined as well. --
