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Tests for external linkage symbol collision check.

Fix #61232
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pnkfelix committed May 27, 2019
1 parent 4e60f53 commit c8887abf20f72631eeeb72eaf14fa27fc4e550fa
@@ -0,0 +1,7 @@
#![feature(linkage)]
#![crate_type = "lib"]

extern {
#[linkage="external"]
pub static collision: *const i32;
}
@@ -0,0 +1,21 @@
// rust-lang/rust#61232: We used to ICE when trying to detect a
// collision on the symbol generated for the external linkage item in
// an extern crate.

// aux-build:def_colliding_external.rs

extern crate def_colliding_external as dep1;

#[no_mangle]
pub static _rust_extern_with_linkage_collision: i32 = 0;

mod dep2 {
#[no_mangle]
pub static collision: usize = 0;
}

fn main() {
unsafe {
println!("{:p}", &dep1::collision);
}
}
@@ -0,0 +1,8 @@
error: symbol `collision` is already defined
--> $DIR/auxiliary/def_colliding_external.rs:6:5
|
LL | pub static collision: *const i32;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

@@ -0,0 +1,23 @@
#![feature(linkage)]

mod dep1 {
extern {
#[linkage="external"]
#[no_mangle]
pub static collision: *const i32; //~ ERROR symbol `collision` is already defined
}
}

#[no_mangle]
pub static _rust_extern_with_linkage_collision: i32 = 0;

mod dep2 {
#[no_mangle]
pub static collision: usize = 0;
}

fn main() {
unsafe {
println!("{:p}", &dep1::collision);
}
}
@@ -0,0 +1,8 @@
error: symbol `collision` is already defined
--> $DIR/linkage-detect-local-generated-name-collision.rs:7:9
|
LL | pub static collision: *const i32;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

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