1 files changed, 85 insertions, 0 deletions
diff --git a/tests/ui/macros/trace_faulty_macros.stderr b/tests/ui/macros/trace_faulty_macros.stderr
new file mode 100644
index 00000000000..21e47da0757
--- /dev/null
+++ b/tests/ui/macros/trace_faulty_macros.stderr
@@ -0,0 +1,85 @@
+error: no rules expected the token `bcd`
+  --> $DIR/trace_faulty_macros.rs:7:26
+   |
+LL | macro_rules! my_faulty_macro {
+   | ---------------------------- when calling this macro
+LL |     () => {
+LL |         my_faulty_macro!(bcd);
+   |                          ^^^ no rules expected this token in macro call
+...
+LL |     my_faulty_macro!();
+   |     ------------------ in this macro invocation
+   |
+   = note: while trying to match end of macro
+   = note: this error originates in the macro `my_faulty_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+note: trace_macro
+  --> $DIR/trace_faulty_macros.rs:31:5
+   |
+LL |     my_faulty_macro!();
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+   = note: expanding `my_faulty_macro! {  }`
+   = note: to `my_faulty_macro! (bcd) ;`
+   = note: expanding `my_faulty_macro! { bcd }`
+
+error: recursion limit reached while expanding `my_recursive_macro!`
+  --> $DIR/trace_faulty_macros.rs:22:9
+   |
+LL |         my_recursive_macro!();
+   |         ^^^^^^^^^^^^^^^^^^^^^
+...
+LL |     my_recursive_macro!();
+   |     --------------------- in this macro invocation
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "8"]` attribute to your crate (`trace_faulty_macros`)
+   = note: this error originates in the macro `my_recursive_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+note: trace_macro
+  --> $DIR/trace_faulty_macros.rs:32:5
+   |
+LL |     my_recursive_macro!();
+   |     ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: expanding `my_recursive_macro! {  }`
+   = note: to `my_recursive_macro! () ;`
+   = note: expanding `my_recursive_macro! {  }`
+   = note: to `my_recursive_macro! () ;`
+   = note: expanding `my_recursive_macro! {  }`
+   = note: to `my_recursive_macro! () ;`
+   = note: expanding `my_recursive_macro! {  }`
+   = note: to `my_recursive_macro! () ;`
+
+error: expected expression, found `A { a: a, b: 0, c: _, .. }`
+  --> $DIR/trace_faulty_macros.rs:16:9
+   |
+LL |         $a
+   |         ^^ expected expression
+...
+LL |     let a = pat_macro!();
+   |             ------------ in this macro invocation
+   |
+   = note: this error originates in the macro `pat_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0774]: `derive` may only be applied to `struct`s, `enum`s and `union`s
+  --> $DIR/trace_faulty_macros.rs:42:1
+   |
+LL | #[derive(Debug)]
+   | ^^^^^^^^^^^^^^^^ not applicable here
+LL | fn use_derive_macro_as_attr() {}
+   | -------------------------------- not a `struct`, `enum` or `union`
+
+note: trace_macro
+  --> $DIR/trace_faulty_macros.rs:36:13
+   |
+LL |     let a = pat_macro!();
+   |             ^^^^^^^^^^^^
+   |
+   = note: expanding `pat_macro! {  }`
+   = note: to `pat_macro! (A { a : a, b : 0, c : _, .. }) ;`
+   = note: expanding `pat_macro! { A { a : a, b : 0, c : _, .. } }`
+   = note: to `A { a: a, b: 0, c: _, .. }`
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0774`.