- Crash when doing a type property lookup for const inline enums in some cases #2717.

releasenotes.md

@@ -50,6 +50,7 @@
 - Fix the case where `\u<unicode char>` could crash the compiler on some platforms.
 - Designated initialization with ranges would not error on overflow by 1.
 - `io::read_fully` now handles unbounded streams properly.
+- Crash when doing a type property lookup for const inline enums in some cases #2717.
 
 ### Stdlib changes
 - Add `ThreadPool` join function to wait for all threads to finish in the pool without destroying the threads.

src/compiler/sema_name_resolution.c

@@ -1037,7 +1037,7 @@ Decl *sema_resolve_type_method(SemaContext *context, CanonicalType *type, const
 			goto RETRY;
 		case TYPE_ENUM:
 		case TYPE_CONST_ENUM:
-			type = enum_inner_type(type);
+			type = enum_inner_type(type)->canonical;
 			goto RETRY;
 		default:
 			UNREACHABLE

test/test_suite/enumerations/const_enum.c3

@@ -0,0 +1,12 @@
+import std::io;
+
+enum MyEnum : const inline CInt
+{
+	FOO = 1,
+	BAR = 5,
+	BAZ = 9,
+}
+fn void main()
+{
+	io::printn(MyEnum.lookup(2)); // #error: No method or inner struct/union 'MyEnum.lookup' found
+}