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-rw-r--r--tests/run-make/extern-fn-generic/test.rs20
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/run-make/extern-fn-generic/test.rs b/tests/run-make/extern-fn-generic/test.rs
new file mode 100644
index 000000000..c9baa4898
--- /dev/null
+++ b/tests/run-make/extern-fn-generic/test.rs
@@ -0,0 +1,20 @@
+extern crate testcrate;
+
+extern "C" fn bar<T>(ts: testcrate::TestStruct<T>) -> T {
+ ts.y
+}
+
+#[link(name = "test", kind = "static")]
+extern "C" {
+ fn call(c: extern "C" fn(testcrate::TestStruct<i32>) -> i32) -> i32;
+}
+
+fn main() {
+ // Let's test calling it cross crate
+ let back = unsafe { testcrate::call(testcrate::foo::<i32>) };
+ assert_eq!(3, back);
+
+ // And just within this crate
+ let back = unsafe { call(bar::<i32>) };
+ assert_eq!(3, back);
+}