Fix a const preservation issue when using typedefs

1 files changed, 1 insertions, 1 deletions

diff --git a/parser.c b/parser.c
index 4f56c15..aa5fb63 100644
--- a/parser.c
+++ b/parser.c
@@ -691,7 +691,7 @@ static void instantiate_typedef(struct parser* P, struct ctype* tt, const struct
     struct ctype pt = *tt;
     *tt = *ft;
 
-    tt->const_mask = pt.const_mask;
+    tt->const_mask |= pt.const_mask;
     tt->is_packed = pt.is_packed;
 
     if (tt->is_packed) {