mirror of https://github.com/rust-lang/rust
39 lines
861 B
Rust
39 lines
861 B
Rust
//@ revisions: x64
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//@ assembly-output: emit-asm
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//@ [x64] compile-flags: --target x86_64-unknown-linux-gnu -Crelocation-model=pie
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//@ [x64] needs-llvm-components: x86
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#![feature(no_core, lang_items)]
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#![no_core]
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#![crate_type="rlib"]
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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// CHECK-LABEL: call_other_fn:
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// With PIE local functions are called "directly".
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// CHECK: {{(jmp|callq)}} other_fn
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#[no_mangle]
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pub fn call_other_fn() -> u8 {
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unsafe {
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other_fn()
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}
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}
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// CHECK-LABEL: other_fn:
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// External functions are still called through GOT, since we don't know if the symbol
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// is defined in the binary or in the shared library.
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// CHECK: callq *foreign_fn@GOTPCREL(%rip)
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#[no_mangle]
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#[inline(never)]
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pub fn other_fn() -> u8 {
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unsafe {
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foreign_fn()
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}
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}
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extern "C" {fn foreign_fn() -> u8;}
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