Fix an ICE in the min_const_fn analysis

2 files changed, 23 insertions, 0 deletions

diff --git a/src/test/ui/consts/single_variant_match_ice.rs b/src/test/ui/consts/single_variant_match_ice.rs
new file mode 100644
index 00000000000..67a41bc5dc4
--- /dev/null
+++ b/src/test/ui/consts/single_variant_match_ice.rs
@@ -0,0 +1,15 @@
+enum Foo {
+    Prob,
+}
+
+impl Foo {
+    pub const fn as_val(&self) -> u8 {
+        use self::Foo::*;
+
+        match *self {
+            Prob => 0x1, //~ ERROR `if`, `match`, `&&` and `||` are not stable in const fn
+        }
+    }
+}
+
+fn main() {}
diff --git a/src/test/ui/consts/single_variant_match_ice.stderr b/src/test/ui/consts/single_variant_match_ice.stderr
new file mode 100644
index 00000000000..a0222b0d489
--- /dev/null
+++ b/src/test/ui/consts/single_variant_match_ice.stderr
@@ -0,0 +1,8 @@
+error: `if`, `match`, `&&` and `||` are not stable in const fn
+  --> $DIR/single_variant_match_ice.rs:10:13
+   |
+LL |             Prob => 0x1, //~ ERROR `if`, `match`, `&&` and `||` are not stable in const fn
+   |             ^^^^
+
+error: aborting due to previous error
+