Visit patterns' literal expressions before binding new idents

4 files changed, 46 insertions, 0 deletions

diff --git a/src/test/ui/match/expr_before_ident_pat.rs b/src/test/ui/match/expr_before_ident_pat.rs
new file mode 100644
index 00000000000..47db6c3f488
--- /dev/null
+++ b/src/test/ui/match/expr_before_ident_pat.rs
@@ -0,0 +1,15 @@
+#![feature(half_open_range_patterns)]
+
+macro_rules! funny {
+    ($a:expr, $b:ident) => {
+        match [1, 2] {
+            [$a, $b] => {}
+        }
+    };
+}
+
+fn main() {
+    funny!(a, a);
+    //~^ ERROR cannot find value `a` in this scope
+    //~| ERROR arbitrary expressions aren't allowed in patterns
+}
diff --git a/src/test/ui/match/expr_before_ident_pat.stderr b/src/test/ui/match/expr_before_ident_pat.stderr
new file mode 100644
index 00000000000..1ac8274ffd5
--- /dev/null
+++ b/src/test/ui/match/expr_before_ident_pat.stderr
@@ -0,0 +1,15 @@
+error: arbitrary expressions aren't allowed in patterns
+  --> $DIR/expr_before_ident_pat.rs:12:12
+   |
+LL |     funny!(a, a);
+   |            ^
+
+error[E0425]: cannot find value `a` in this scope
+  --> $DIR/expr_before_ident_pat.rs:12:12
+   |
+LL |     funny!(a, a);
+   |            ^ not found in this scope
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/src/test/ui/match/issue-92100.rs b/src/test/ui/match/issue-92100.rs
new file mode 100644
index 00000000000..021166b2ba5
--- /dev/null
+++ b/src/test/ui/match/issue-92100.rs
@@ -0,0 +1,7 @@
+#![feature(half_open_range_patterns)]
+
+fn main() {
+    match [1, 2] {
+        [a.., a] => {} //~ ERROR cannot find value `a` in this scope
+    }
+}
diff --git a/src/test/ui/match/issue-92100.stderr b/src/test/ui/match/issue-92100.stderr
new file mode 100644
index 00000000000..0f694c587fc
--- /dev/null
+++ b/src/test/ui/match/issue-92100.stderr
@@ -0,0 +1,9 @@
+error[E0425]: cannot find value `a` in this scope
+  --> $DIR/issue-92100.rs:5:10
+   |
+LL |         [a.., a] => {}
+   |          ^ not found in this scope
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0425`.