fix bug in printing type decls

2 files changed, 13 insertions, 0 deletions

diff --git a/codegen.c b/codegen.c
index 7e8565a..8b99e64 100644
--- a/codegen.c
+++ b/codegen.c
@@ -145,7 +145,11 @@ const void typedecl(Type *type) {
     println("typedef char Type_%d ;", type->id);
     break;
   case TY_PTR:
+    // When we recurse, we need to set the type id to 0 because we haven't
+    // printed it out yet.
+    type->id = 0;
     typedecl(type->base);
+    if (!type->id) type->id = count();
     println("typedef Type_%d * Type_%d ;", type->base->id, type->id);
     break;
   case TY_FUNC: {
@@ -167,7 +171,9 @@ const void typedecl(Type *type) {
     break;
   }
   case TY_ARRAY:
+    type->id = 0;
     typedecl(type->base);
+    if (!type->id) type->id = count();
     if (type->array_len == -1)
       println("typedef Type_%d Type_%d [ ] ;", type->base->id, type->id);
     else
diff --git a/tests/typedef_struct_ptr.c b/tests/typedef_struct_ptr.c
new file mode 100644
index 0000000..c5cb16d
--- /dev/null
+++ b/tests/typedef_struct_ptr.c
@@ -0,0 +1,7 @@
+typedef struct ll *ll_p;
+
+struct ll {
+  ll_p next;
+};
+
+extern ll_p xyz;