error: Undefined Behavior: bad declaration of miri_resolve_frame - should return a struct with 5 fields --> $DIR/bad-backtrace-decl.rs:LL:CC | LL | ... miri_resolve_frame(*frame, 0); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ bad declaration of miri_resolve_frame - should return a struct with 5 fields | = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information = note: inside `main` at $DIR/bad-backtrace-decl.rs:LL:CC note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace error: aborting due to previous error