rust/tests/mir-opt/const_prop/mutable_variable_unprop_assign.rs

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// skip-filecheck
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
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// unit-test: ConstProp
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// EMIT_MIR mutable_variable_unprop_assign.main.ConstProp.diff
fn main() {
let a = foo();
let mut x: (i32, i32) = (1, 2);
x.1 = a;
let y = x.1;
let z = x.0; // this could theoretically be allowed, but we can't handle it right now
}
#[inline(never)]
fn foo() -> i32 {
unimplemented!()
}