b6f554b6dc
This commit flags all allocation-related functions in liballoc as "this can't unwind" which should largely resolve the size-related issues found on #42808. The documentation on the trait was updated with such a restriction (they can't panic) as well as some other words about the relative instability about implementing a bullet-proof allocator. Closes #42808
32 lines
826 B
Rust
32 lines
826 B
Rust
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//
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// no-system-llvm
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// compile-flags: -O
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#![crate_type="lib"]
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struct A;
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impl Drop for A {
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fn drop(&mut self) {
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extern { fn foo(); }
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unsafe { foo(); }
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}
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}
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#[no_mangle]
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pub fn a(a: Box<i32>) {
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// CHECK-LABEL: define void @a
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// CHECK: call void @__rust_dealloc
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// CHECK-NEXT: call void @foo
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let _a = A;
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drop(a);
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}
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