Bug 19938 – CTFE duplicates calls to function when it is used as LHS of slice assignment

struct foo { int count; int[] x() { count++; return []; } } auto check() { foo f; f.x[] = 1; f.x[] = 2; assert(f.count == 2); // fails in CTFE only, where f.count == 4, x() calls are duplicated only in CTFE return true; } unittest { check(); // works static assert(check()); }

Slightly simplified: auto check() { int count; int[] x() { count++; return []; } x()[] = 1; assert(count == 1); // fails in CTFE only, where count == 2, LHS calls are duplicated in CTFE return true; } unittest { cast(void)check(); // works static assert(check()); }

THIS ISSUE HAS BEEN MOVED TO GITHUB https://github.com/dlang/dmd/issues/19577 DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB