// Comptime `#run` of a failable whose error ESCAPES (no `catch` / `or`): the
// compiler reports the raised tag name + the return trace at the `#run` site and
// halts with a non-zero exit (E5.2). Before this, a bare failable `#run`
// segfaulted (const form) or silently succeeded (statement form).

#import "modules/std.sx";

E :: error { Bad, Empty }

parse :: (n: s32) -> (s32, !E) {
    if n < 0  { raise error.Bad; }
    if n == 0 { raise error.Empty; }
    return n * 2;
}

x :: #run parse(-1);            // error.Bad escapes → comptime diagnostic + halt

main :: () -> s32 { return x; }