Prevent crash in tagged enums rendering (#1986)

* Prevent crash in tagged enums rendering

* Add a test case

1 files changed, 17 insertions, 0 deletions

diff --git a/test/compile_errors.zig b/test/compile_errors.zig
index e9fe6f589c..b935b4825a 100644
--- a/test/compile_errors.zig
+++ b/test/compile_errors.zig
@@ -5599,4 +5599,21 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
     ,
         ".tmp_source.zig:2:26: error: vector element type must be integer, float, or pointer; '@Vector(4, u8)' is invalid",
     );
+
+    cases.add(
+        "compileLog of tagged enum doesn't crash the compiler",
+        \\const Bar = union(enum(u32)) {
+        \\    X: i32 = 1
+        \\};
+        \\
+        \\fn testCompileLog(x: Bar) void {
+        \\    @compileLog(x);
+        \\}
+        \\
+        \\pub fn main () void {
+        \\    comptime testCompileLog(Bar{.X = 123});
+        \\}
+    ,
+        ".tmp_source.zig:6:5: error: found compile log statement"
+    );
 }