34 lines
1006 B
Rust
34 lines
1006 B
Rust
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//@revisions: noopt opt
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//@[noopt] build-fail
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//@[opt] compile-flags: -O
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//FIXME: `opt` revision currently does not stop with an error due to
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//<https://github.com/rust-lang/rust/issues/107503>.
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//@[opt] build-pass
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//! Make sure we detect erroneous constants post-monomorphization even when they are unused. This is
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//! crucial, people rely on it for soundness. (https://github.com/rust-lang/rust/issues/112090)
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struct Fail<T>(T);
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impl<T> Fail<T> {
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const C: () = panic!(); //[noopt]~ERROR evaluation of `Fail::<i32>::C` failed
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}
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// This function is not actually called, but is mentioned implicitly as destructor in dead code in a
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// function that is called. Make sure we still find this error.
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impl<T> Drop for Fail<T> {
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fn drop(&mut self) {
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let _ = Fail::<T>::C;
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}
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}
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#[inline(never)]
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fn called<T>(x: T) {
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if false {
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let v = Fail(x);
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drop(v); // move `v` away (and it then gets dropped there so build still fails)
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}
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}
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pub fn main() {
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called::<i32>(0);
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}
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