https://issues.dlang.org/show_bug.cgi?id=15205
Steven Schveighoffer <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #4 from Steven Schveighoffer <[email protected]> --- Just helping out someone in discord, and ran into what looks like the same issue. What seems to happen is if the non-first union member is a static array, and that array is set via indexing items, then it does not set the internal tag for the union during CTFE, so it doesn't think the second member is set, and instead writes out the first member. Change option B to: ```d v = v.init; v[0] = x_; v[1] = y_; ``` and it works. What I think happens is the assignment to v sets the union tag. If you set v all at once, it also works: ```d v = [x_, y_]; ``` I think the compiler should detect the initialization via the indexed usage and set the tag properly. --
