Fix #2572

src/exact_value.cpp

@@ -342,9 +342,6 @@ gb_internal ExactValue exact_value_from_basic_literal(TokenKind kind, String con
 		utf8_decode(string.text, string.len, &r);
 		return exact_value_i64(r);
 	}
-	default:
-		GB_PANIC("Invalid token for basic literal");
-		break;
 	}
 
 	ExactValue result = {ExactValue_Invalid};

src/parser.cpp

@@ -666,7 +666,11 @@ gb_internal ExactValue exact_value_from_token(AstFile *f, Token const &token) {
 		}
 		break;
 	}
-	return exact_value_from_basic_literal(token.kind, s);
+	ExactValue value = exact_value_from_basic_literal(token.kind, s);
+	if (value.kind == ExactValue_Invalid) {
+		syntax_error(token, "Invalid token literal");
+	}
+	return value;
 }
 
 gb_internal String string_value_from_token(AstFile *f, Token const &token) {