On Saturday, 3 August 2024 at 05:07:55 UTC, Dakota wrote: > ```c > #define ERR_SUCCESS 0 > #define ERR_INVALID -1 // invalid argument > ``` > > If the number >=0, it work. < 0 will not work. > > DMD64 D Compiler v2.110.0-beta.1 https://issues.dlang.org/show_bug.cgi?id=24639 -Steve