17fb43bdc6
In #46382 the logic around linkage preservation with ThinLTO ws tweaked but the loop that registered all otherwise exported GUID values as "don't internalize me please" was erroneously too conservative and only asking "external" linkage items to not be internalized. Instead we actually want the inversion of that condition, everything *without* "local" linkage to be internalized. This commit updates the condition there, adds a test, and... Closes #46543
37 lines
840 B
Rust
37 lines
840 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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// compile-flags: -C codegen-units=8 -Z thinlto
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// ignore-windows
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// min-llvm-version 4.0
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#![feature(linkage)]
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pub mod foo {
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#[linkage = "weak"]
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#[no_mangle]
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pub extern "C" fn FOO() -> i32 {
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0
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}
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}
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mod bar {
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extern "C" {
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fn FOO() -> i32;
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}
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pub fn bar() -> i32 {
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unsafe { FOO() }
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}
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}
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fn main() {
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bar::bar();
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}
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