src/test/incremental/change_symbol_export_status.rs

   1 // revisions: rpass1 rpass2
   2 // compile-flags: -Zquery-dep-graph
   3
   4 #![feature(rustc_attrs)]
   5 #![rustc_partition_codegened(module = "change_symbol_export_status-mod1", cfg = "rpass2")]
   6 #![rustc_partition_reused(module = "change_symbol_export_status-mod2", cfg = "rpass2")]
   7
   8 // This test case makes sure that a change in symbol visibility is detected by
   9 // our dependency tracking. We do this by changing a module's visibility to
  10 // `private` in rpass2, causing the contained function to go from `default` to
  11 // `hidden` visibility.
  12 // The function is marked with #[no_mangle] so it is considered for exporting
  13 // even from an executable. Plain Rust functions are only exported from Rust
  14 // libraries, which our test infrastructure does not support.
  15
  16 #[cfg(rpass1)]
  17 pub mod mod1 {
  18     #[no_mangle]
  19     pub fn foo() {}
  20 }
  21
  22 #[cfg(rpass2)]
  23 mod mod1 {
  24     #[no_mangle]
  25     pub fn foo() {}
  26 }
  27
  28 pub mod mod2 {
  29     #[no_mangle]
  30     pub fn bar() {}
  31 }
  32
  33 fn main() {
  34     mod1::foo();
  35 }