digitalmars.D.bugs - [Issue 22546] New: bad diagnostic for CTFE array cast of string in UDA
- d-bugmail puremagic.com (33/33) Nov 25 2021 https://issues.dlang.org/show_bug.cgi?id=22546
https://issues.dlang.org/show_bug.cgi?id=22546 Issue ID: 22546 Summary: bad diagnostic for CTFE array cast of string in UDA Product: D Version: D2 Hardware: All OS: All Status: NEW Keywords: diagnostic Severity: minor Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: dkorpel live.nl I was messing around with weird combinations of string literals and found this oddity: ``` enum a = cast(dstring) "what"c; (cast(dstring) "huh"c) int x; ``` The first line gives: Error: array cast from `string` to `dstring` is not supported at compile time Makes sense, but the second line: /dlang/dmd/linux/bin64/../../src/druntime/import/core/memory.d(1023): Error: `fakePureErrno` cannot be interpreted at compile time, because it has no available source code When adding one more character to the string, it gets a bit more sensible again: /dlang/dmd/linux/bin64/../../src/druntime/import/core/internal/array/casting.d(90): Error: reinterpreting cast from `string` to `Array*` is not supported in CTFE onlineapp.d(2): called from here: `__ArrayCast("huha"c)` Not encountered in any actual code, so filing as a minor issue. --
Nov 25 2021