invalid location with #debug type error

[erickt]

This code highlights an invalid code location:

fn main() {
    let x = [1,2,3];
    #debug(x);
}

Returns this error message:

foo.rs:4:186: 4:187 error: first argument to #fmt must be a string literal.
foo.rs:4 }
                                                                                                                                                                                                   ^
rust: upcall fail 'explicit failure', ../src/comp/driver/session.rs:71
rust: domain main @0x102029600 root task failed
rust: fatal, 'leaked memory in rust main loop (2 objects)' failed, ../src/rt/memory_region.cpp:158 2 objects

[graydon]

This is a general problem with macros, not just #debug. When they report an error they go to (or near) the source line before the macro, and highlight it, but fail to pretty-print what the expanded syntax looked like. They should do both.

[kevina]

This bug turns out to be a duplicate of #1448. The fix to that will fix this one.