| // Regression test for #138942, where a function was incorrectly internalized, despite the fact |
| // that it was referenced by a var debug info from another code generation unit. |
| // |
| //@ build-pass |
| //@ revisions: limited full |
| //@ compile-flags: -Ccodegen-units=4 |
| //@[limited] compile-flags: -Cdebuginfo=limited |
| //@[full] compile-flags: -Cdebuginfo=full |
| trait Fun { |
| const FUN: &'static fn(); |
| } |
| impl Fun for () { |
| const FUN: &'static fn() = &(detail::f as fn()); |
| } |
| mod detail { |
| // Place `f` in a distinct module to generate a separate code generation unit. |
| #[inline(never)] |
| pub(super) fn f() {} |
| } |
| fn main() { |
| // SingleUseConsts represents "x" using VarDebugInfoContents::Const. |
| // It is the only reference to `f` remaining. |
| let x = <() as ::Fun>::FUN; |
| } |
