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29 lines
508 B
Rust
29 lines
508 B
Rust
#![crate_type = "lib"]
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//@ compile-flags: -O
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use std::mem;
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fn foo<T>(a: &mut T, b: T) -> bool {
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let b = Some(mem::replace(a, b));
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let ret = b.is_some();
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mem::forget(b);
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return ret;
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}
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// CHECK-LABEL: @foo_u32
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// CHECK: store i32
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// CHECK-NEXT: ret i1 true
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#[no_mangle]
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pub fn foo_u32(a: &mut u32, b: u32) -> bool {
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foo(a, b)
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}
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// CHECK-LABEL: @foo_box
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// CHECK: store ptr
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// CHECK-NEXT: ret i1 true
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#[no_mangle]
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pub fn foo_box(a: &mut Box<u32>, b: Box<u32>) -> bool {
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foo(a, b)
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}
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