25 lines
692 B
Rust
25 lines
692 B
Rust
// this tests move up progration, which is not yet implemented
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// EMIT_MIR basic_assignment.main.SimplifyCfg-initial.after.mir
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// Check codegen for assignments (`a = b`) where the left-hand-side is
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// not yet initialized. Assignments tend to be absent in simple code,
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// so subtle breakage in them can leave a quite hard-to-find trail of
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// destruction.
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fn main() {
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let nodrop_x = false;
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let nodrop_y;
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// Since boolean does not require drop, this can be a simple
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// assignment:
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nodrop_y = nodrop_x;
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let drop_x: Option<Box<u32>> = None;
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let drop_y;
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// Since the type of `drop_y` has drop, we generate a `replace`
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// terminator:
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drop_y = drop_x;
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}
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