src/test/ui/lto-duplicate-symbols.rs

// build-fail
// aux-build:lto-duplicate-symbols1.rs
// aux-build:lto-duplicate-symbols2.rs
// error-pattern:Linking globals named 'foo': symbol multiply defined!
// compile-flags: -C lto
// no-prefer-dynamic

extern crate lto_duplicate_symbols1;
extern crate lto_duplicate_symbols2;

fn main() {}