34 lines
767 B
Rust
34 lines
767 B
Rust
// Test closure that:
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//
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// - captures a variable `y` by reference
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// - stores that reference to `y` into another, longer-lived place (`p`)
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//
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// Both of these are upvars of reference type (the capture of `y` is
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// of type `&'a i32`, the capture of `p` is of type `&mut &'b
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// i32`). The closure thus computes a relationship between `'a` and
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// `'b`. This relationship is propagated to the closure creator,
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// which reports an error.
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// compile-flags:-Zverbose-internals
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#![feature(rustc_attrs)]
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#[rustc_regions]
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fn test() {
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let x = 44;
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let mut p = &x;
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{
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let y = 22;
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let mut closure = || p = &y;
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//~^ ERROR `y` does not live long enough [E0597]
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closure();
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}
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deref(p);
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}
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fn deref(_p: &i32) { }
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fn main() { }
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