mirror of https://github.com/rust-lang/rust.git
37 lines
1.1 KiB
Rust
37 lines
1.1 KiB
Rust
//@ build-pass
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//@ compile-flags: --crate-type=rlib --emit=llvm-ir -Cno-prepopulate-passes
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// This test declares globals by the same name with different types, which
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// caused problems because Module::getOrInsertGlobal would return a Constant*
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// bitcast instead of a GlobalVariable* that could access linkage/visibility.
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// In alt builds with LLVM assertions this would fail:
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//
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// rustc: /checkout/src/llvm-project/llvm/include/llvm/Support/Casting.h:269:
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// typename cast_retty<X, Y *>::ret_type llvm::cast(Y *) [X = llvm::GlobalValue, Y = llvm::Value]:
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// Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
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//
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// In regular builds, the bad cast was UB, like "Invalid LLVMRustVisibility value!"
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#![allow(dropping_copy_types)]
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pub mod before {
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#[no_mangle]
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pub static GLOBAL1: [u8; 1] = [1];
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}
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pub mod inner {
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extern "C" {
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pub static GLOBAL1: u8;
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pub static GLOBAL2: u8;
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}
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pub fn call() {
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drop(unsafe { (GLOBAL1, GLOBAL2) });
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}
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}
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pub mod after {
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#[no_mangle]
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pub static GLOBAL2: [u8; 1] = [2];
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}
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