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-rw-r--r--src/test/ui/proc-macro/parent-source-spans.rs53
1 files changed, 53 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/parent-source-spans.rs b/src/test/ui/proc-macro/parent-source-spans.rs
new file mode 100644
index 000000000..354657db4
--- /dev/null
+++ b/src/test/ui/proc-macro/parent-source-spans.rs
@@ -0,0 +1,53 @@
+// aux-build:parent-source-spans.rs
+
+#![feature(decl_macro)]
+
+extern crate parent_source_spans;
+
+use parent_source_spans::parent_source_spans;
+
+macro one($a:expr, $b:expr) {
+ two!($a, $b);
+ //~^ ERROR first parent: "hello"
+ //~| ERROR second parent: "world"
+}
+
+macro two($a:expr, $b:expr) {
+ three!($a, $b);
+ //~^ ERROR first final: "hello"
+ //~| ERROR second final: "world"
+ //~| ERROR first final: "yay"
+ //~| ERROR second final: "rust"
+}
+
+// forwarding tokens directly doesn't create a new source chain
+macro three($($tokens:tt)*) {
+ four!($($tokens)*);
+}
+
+macro four($($tokens:tt)*) {
+ parent_source_spans!($($tokens)*);
+ //~^ ERROR cannot find value `ok` in this scope
+ //~| ERROR cannot find value `ok` in this scope
+ //~| ERROR cannot find value `ok` in this scope
+}
+
+fn main() {
+ one!("hello", "world");
+ //~^ ERROR first grandparent: "hello"
+ //~| ERROR second grandparent: "world"
+ //~| ERROR first source: "hello"
+ //~| ERROR second source: "world"
+
+ two!("yay", "rust");
+ //~^ ERROR first parent: "yay"
+ //~| ERROR second parent: "rust"
+ //~| ERROR first source: "yay"
+ //~| ERROR second source: "rust"
+
+ three!("hip", "hop");
+ //~^ ERROR first final: "hip"
+ //~| ERROR second final: "hop"
+ //~| ERROR first source: "hip"
+ //~| ERROR second source: "hop"
+}