fix for postfix compound literals

2 files changed, 14 insertions, 9 deletions

diff --git a/parse.c b/parse.c
index 0963095..fe17515 100644
--- a/parse.c
+++ b/parse.c
@@ -2812,7 +2812,9 @@ static Node *new_inc_dec(Node *node, Token *tok, int addend) {
 //              | "->" ident
 //              | "++"
 //              | "--"
+// fixed per: https://github.com/rui314/chibicc/issues/84
 static Node *postfix(Token **rest, Token *tok) {
+  Node *node = 0;
   if (equal(tok, "(") && is_typename(tok->next)) {
     // Compound literal
     Token *start = tok;
@@ -2821,18 +2823,18 @@ static Node *postfix(Token **rest, Token *tok) {
 
     if (scope->next == NULL) {
       Obj *var = new_anon_gvar(ty);
-      gvar_initializer(rest, tok, var);
-      return new_var_node(var, start);
+      gvar_initializer(&tok, tok, var);
+      node = new_var_node(var, start);
+    } else {
+      Obj *var = new_lvar("", ty);
+      Node *lhs = lvar_initializer(&tok, tok, var);
+      Node *rhs = new_var_node(var, tok);
+      node = new_binary(ND_COMMA, lhs, rhs, start);
     }
-
-    Obj *var = new_lvar("", ty);
-    Node *lhs = lvar_initializer(rest, tok, var);
-    Node *rhs = new_var_node(var, tok);
-    return new_binary(ND_COMMA, lhs, rhs, start);
+  } else {
+    node = primary(&tok, tok);
   }
 
-  Node *node = primary(&tok, tok);
-
   for (;;) {
     if (equal(tok, "(")) {
       node = funcall(&tok, tok->next, node);
diff --git a/tests/cast_index.c b/tests/cast_index.c
new file mode 100644
index 0000000..036770a
--- /dev/null
+++ b/tests/cast_index.c
@@ -0,0 +1,3 @@
+int xyz() {
+ return (int []){ 20, 21 }[1];
+}