Bug 11601 – pragma(msg, ...) output not silenced inside is(typeof()) and __traits(compiles, ...)

void foo(T)() { static if (!is(T : int)) { pragma(msg, "Error message."); } static assert(is(T : int)); } void main() { assert(!is(typeof(foo!string))); } The above program outputs "Error message." before concluding that the function could not be instantiated. In my use case, the pragma is used to tell the user exactly what he's doing wrong, and have absolutely no use when testing if the code compiles or not.

Works in 2.078.3.

I was apparently a bit hasty in closing this. Encountered the same issue again today, and testing the code in comment #0 again shows that its behavior has not been fixed in 2.078.3.

THIS ISSUE HAS BEEN MOVED TO GITHUB https://github.com/dlang/dmd/issues/17628 DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB