1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/incremental/change_symbol_export_status.rs b/src/test/incremental/change_symbol_export_status.rs
new file mode 100644
index 000000000..dd3dce4e7
--- /dev/null
+++ b/src/test/incremental/change_symbol_export_status.rs
@@ -0,0 +1,41 @@
+// revisions: rpass1 rpass2 rpass3 rpass4
+// compile-flags: -Zquery-dep-graph
+// [rpass1]compile-flags: -Zincremental-ignore-spans
+// [rpass2]compile-flags: -Zincremental-ignore-spans
+// [rpass3]compile-flags: -Zincremental-relative-spans
+// [rpass4]compile-flags: -Zincremental-relative-spans
+
+#![feature(rustc_attrs)]
+#![rustc_partition_reused(module = "change_symbol_export_status-mod1", cfg = "rpass2")]
+#![rustc_partition_reused(module = "change_symbol_export_status-mod2", cfg = "rpass2")]
+#![rustc_partition_reused(module = "change_symbol_export_status-mod1", cfg = "rpass4")]
+#![rustc_partition_reused(module = "change_symbol_export_status-mod2", cfg = "rpass4")]
+
+// This test case makes sure that a change in symbol visibility is detected by
+// our dependency tracking. We do this by changing a module's visibility to
+// `private` in rpass2, causing the contained function to go from `default` to
+// `hidden` visibility.
+// The function is marked with #[no_mangle] so it is considered for exporting
+// even from an executable. Plain Rust functions are only exported from Rust
+// libraries, which our test infrastructure does not support.
+
+#[cfg(any(rpass1,rpass3))]
+pub mod mod1 {
+    #[no_mangle]
+    pub fn foo() {}
+}
+
+#[cfg(any(rpass2,rpass4))]
+mod mod1 {
+    #[no_mangle]
+    pub fn foo() {}
+}
+
+pub mod mod2 {
+    #[no_mangle]
+    pub fn bar() {}
+}
+
+fn main() {
+    mod1::foo();
+}