error: Undefined Behavior: `float_to_int_unchecked` intrinsic called on 9.2233720368547758E+18 which cannot be represented in target type `i64` --> $DIR/float_to_int_64_too_big2.rs:LL:CC | LL | float_to_int_unchecked::(9223372036854775808.0f64); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `float_to_int_unchecked` intrinsic called on 9.2233720368547758E+18 which cannot be represented in target type `i64` | = 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/float_to_int_64_too_big2.rs:LL:CC note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace error: aborting due to previous error