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//@ ignore-cross-compile
//
// The --extern flag can override the default crate search of
// the compiler and directly fetch a given path. There are a few rules
// to follow: for example, there can't be more than one rlib, the crates must
// be valid ("no-exist" in this test), and private crates can't be loaded
// as non-private. This test checks that these rules are enforced.
// See https://github.com/rust-lang/rust/pull/15319
use run_make_support::{rust_lib_name, rustc};
fn main() {
rustc().input("bar.rs").crate_type("rlib").run();
// Exactly the same rlib as the first line, only the filename changes.
rustc().input("bar.rs").crate_type("rlib").extra_filename("-a").run();
rustc().input("bar-alt.rs").crate_type("rlib").run();
// The crate must be valid.
rustc().input("foo.rs").extern_("bar", "no-exist").run_fail();
rustc().input("foo.rs").extern_("bar", "foo.rs").run_fail();
// Compilation fails with two different rlibs.
rustc()
.input("foo.rs")
.extern_("bar", rust_lib_name("bar"))
.extern_("bar", rust_lib_name("bar-alt"))
.run_fail();
// Even though this one has seemingly two rlibs, they are one and the same.
rustc()
.input("foo.rs")
.extern_("bar", rust_lib_name("bar"))
.extern_("bar", rust_lib_name("bar-a"))
.run();
rustc().input("foo.rs").extern_("bar", rust_lib_name("bar")).run();
// Try to be sneaky and load a private crate from with a non-private name.
rustc().input("rustc.rs").arg("-Zforce-unstable-if-unmarked").crate_type("rlib").run();
rustc()
.input("gated_unstable.rs")
.extern_("alloc", rust_lib_name("rustc"))
.run_fail()
.assert_stderr_contains("rustc_private");
}
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