32 lines
798 B
Rust
32 lines
798 B
Rust
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// Verifies that MIR building for a call expression respects
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// privacy when checking if a call return type is uninhabited.
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//@ run-rustfix
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#![allow(unreachable_code, unused_variables)]
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pub mod widget {
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enum Unimplemented {}
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pub struct Widget(Unimplemented);
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impl Widget {
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pub fn new() -> Widget {
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todo!();
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}
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}
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pub fn f() {
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let x: &mut u32;
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Widget::new();
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// Ok. Widget type returned from new is known to be uninhabited
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// and the following code is considered unreachable.
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*x = 1;
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}
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}
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fn main() {
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let y: &mut u32 = &mut 42;
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widget::Widget::new();
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// Error. Widget type is not known to be uninhabited here,
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// so the following code is considered reachable.
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*y = 2; //~ ERROR E0381
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}
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