rust/tests/run-make/wasm-symbols-not-exported/foo.rs

#![crate_type = "cdylib"]

#[no_mangle]
pub extern fn foo() {
    println!("foo");
    panic!("test");
}
rustc: Tweak visibility of some lang items This commit tweaks the linker-level visibility of some lang items that rustc uses and defines. Notably this means that `#[panic_implementation]` and `#[alloc_error_handler]` functions are never marked as `internal`. It's up to the linker to eliminate these, not rustc. Additionally `#[global_allocator]` generated symbols are no longer forced to `Default` visibility (fully exported), but rather they're relaxed to `Hidden` visibility). This symbols are not needed across DLL boundaries, only as a local implementation detail of the compiler-injected allocator symbols, so `Hidden` should suffice. Closes #51342 Closes #52795 2018-08-02 19:30:43 +00:00			`#![crate_type = "cdylib"]`

			`#[no_mangle]`
			`pub extern fn foo() {`
			`println!("foo");`
			`panic!("test");`
			`}`