From @stmuk

#!/usr/bin/env perl6

say "hi";

my $m = (1,2 X~ ('' X~ '')).first​: *.IO.f;

result​:

hi
===SORRY!===
Cannot invoke this object (REPR​: Uninstantiable)

@coke - Status changed from 'new' to 'open'

I poked commitable6 a bit, hoping to find a commit that showed the old error (https://colabti.org/irclogger/irclogger_log/raku-dev?date=2023-10-09#l209), but didn't succeed.

What I did find were some other old bug reports, that seemed to show similar problems:

• 'X' meta-operator fails with RHS input from parenthesized output of another 'X' #4729 (also a SORRY showing up at runtime, X meta-operator involved)
• Runtime errors marked as compile time #5510

For both those but reports a fix has been committed and tests have been added to roast.

Given the age of this issue (pre Christmas) and the fact that I didn't find more recent bug reports about similar problems, I'll close this issue as "can't reproduce" and without adding a test.

I found another report that seems to be about the same problem and has some interesting details: #4578