3 files changed, 43 insertions, 0 deletions
diff --git a/tests/ui/cast/cast_lit_suffix-issue-138392.fixed b/tests/ui/cast/cast_lit_suffix-issue-138392.fixed
new file mode 100644
index 00000000000..c6fbd09f89c
--- /dev/null
+++ b/tests/ui/cast/cast_lit_suffix-issue-138392.fixed
@@ -0,0 +1,6 @@
+//@ run-rustfix
+#![allow(unused_parens)]
+fn main() {
+    let _x: u8 = (4u8); //~ ERROR: mismatched types
+    let _y: u8 = (4u8); //~ ERROR: mismatched types
+}
diff --git a/tests/ui/cast/cast_lit_suffix-issue-138392.rs b/tests/ui/cast/cast_lit_suffix-issue-138392.rs
new file mode 100644
index 00000000000..86dbbbbf126
--- /dev/null
+++ b/tests/ui/cast/cast_lit_suffix-issue-138392.rs
@@ -0,0 +1,6 @@
+//@ run-rustfix
+#![allow(unused_parens)]
+fn main() {
+    let _x: u8 = (4i32); //~ ERROR: mismatched types
+    let _y: u8 = (4.0f32); //~ ERROR: mismatched types
+}
diff --git a/tests/ui/cast/cast_lit_suffix-issue-138392.stderr b/tests/ui/cast/cast_lit_suffix-issue-138392.stderr
new file mode 100644
index 00000000000..998fcfc36dc
--- /dev/null
+++ b/tests/ui/cast/cast_lit_suffix-issue-138392.stderr
@@ -0,0 +1,31 @@
+error[E0308]: mismatched types
+  --> $DIR/cast_lit_suffix-issue-138392.rs:4:18
+   |
+LL |     let _x: u8 = (4i32);
+   |             --   ^^^^^^ expected `u8`, found `i32`
+   |             |
+   |             expected due to this
+   |
+help: change the type of the numeric literal from `i32` to `u8`
+   |
+LL -     let _x: u8 = (4i32);
+LL +     let _x: u8 = (4u8);
+   |
+
+error[E0308]: mismatched types
+  --> $DIR/cast_lit_suffix-issue-138392.rs:5:18
+   |
+LL |     let _y: u8 = (4.0f32);
+   |             --   ^^^^^^^^ expected `u8`, found `f32`
+   |             |
+   |             expected due to this
+   |
+help: change the type of the numeric literal from `f32` to `u8`
+   |
+LL -     let _y: u8 = (4.0f32);
+LL +     let _y: u8 = (4u8);
+   |
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.