switch on enum which only has 1 field is comptime known

closes #593
2017-12-05 22:26:17 -05:00
parent bb6b4f8db2
commit f464fe14f4
2 changed files with 21 additions and 0 deletions
--- a/test/cases/enum.zig
+++ b/test/cases/enum.zig
@@ -366,3 +366,14 @@ fn doALoopThing(id: EnumWithOneMember) {
 test "comparison operator on enum with one member is comptime known" {
    doALoopThing(EnumWithOneMember.Eof);
 }
+
+const State = enum {
+    Start,
+};
+test "switch on enum with one member is comptime known" {
+    var state = State.Start;
+    switch (state) {
+        State.Start => return,
+    }
+    @compileError("analysis should not reach here");
+}