fix casting integer literal to enum

2 files changed, 17 insertions, 0 deletions

diff --git a/test/cases/enum.zig b/test/cases/enum.zig
index ec900511eb..d15614f9fd 100644
--- a/test/cases/enum.zig
+++ b/test/cases/enum.zig
@@ -344,3 +344,8 @@ fn testEnumWithSpecifiedAndUnspecifiedTagValues(x: MultipleChoice2) {
         MultipleChoice2.Unspecified5 => 9,
     });
 }
+
+test "cast integer literal to enum" {
+    assert(MultipleChoice2(0) == MultipleChoice2.Unspecified1);
+    assert(MultipleChoice2(40) == MultipleChoice2.B);
+}
diff --git a/test/compile_errors.zig b/test/compile_errors.zig
index 5d13ed8d48..162109f4d8 100644
--- a/test/compile_errors.zig
+++ b/test/compile_errors.zig
@@ -2684,4 +2684,16 @@ pub fn addCases(cases: &tests.CompileErrorContext) {
     ,
         ".tmp_source.zig:11:13: error: switch on union which has no attached enum",
         ".tmp_source.zig:1:17: note: consider 'union(enum)' here");
+
+    cases.add("enum in field count range but not matching tag",
+        \\const Foo = enum(u32) {
+        \\    A = 10,
+        \\    B = 11,
+        \\};
+        \\export fn entry() {
+        \\    var x = Foo(0);
+        \\}
+    ,
+        ".tmp_source.zig:6:16: error: enum 'Foo' has no tag matching integer value 0",
+        ".tmp_source.zig:1:13: note: 'Foo' declared here");
 }