diff --git a/tccgen.c b/tccgen.c
index da970fdd..da39d36d 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -2948,6 +2948,8 @@ static int parse_btype(CType *type, AttributeDef *ad)
         case TOK_TYPEOF3:
             next();
             parse_expr_type(&type1);
+            /* remove all storage modifiers except typedef */
+            type1.t &= ~(VT_STORAGE&~VT_TYPEDEF);
             goto basic_type2;
         default:
             if (typespec_found || typedef_found)
diff --git a/tests/tcctest.c b/tests/tcctest.c
index 2c4d1d4f..bd1b9752 100644
--- a/tests/tcctest.c
+++ b/tests/tcctest.c
@@ -2365,6 +2365,11 @@ extern int                     weak_asm_v1       asm("weak_asm_v1x") __attribute
 extern int __attribute((weak)) weak_asm_v2       asm("weak_asm_v2x")                    ;
 extern int __attribute((weak)) weak_asm_v3(void) asm("weak_asm_v3x") __attribute((weak));
 
+static const size_t dummy = 0;
+extern __typeof(dummy) weak_dummy1 __attribute__((weak, alias("dummy")));
+extern __typeof(dummy) __attribute__((weak, alias("dummy"))) weak_dummy2;
+extern __attribute__((weak, alias("dummy"))) __typeof(dummy) weak_dummy3;
+
 void __attribute__((weak)) weak_test(void)
 {
 	printf("weak_f1=%d\n", weak_f1 ? weak_f1() : 123);