From 13fb267e24dd0fbe011d29dc6d3b2512c66118b6 Mon Sep 17 00:00:00 2001
From: Michael Forney <mforney@mforney.org>
Date: Wed, 13 Feb 2019 12:11:13 -0800
Subject: expr: Perform lvalue conversion on array and index in subscript
 expressions

---
 expr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/expr.c b/expr.c
index 683d117..70d8dbf 100644
--- a/expr.c
+++ b/expr.c
@@ -378,6 +378,8 @@ postfixexpr(struct scope *s, struct expression *r)
 			next();
 			arr = r;
 			idx = expr(s);
+			lvalueconvert(arr);
+			lvalueconvert(idx);
 			if (arr->type->kind != TYPEPOINTER) {
 				if (idx->type->kind != TYPEPOINTER)
 					error(&tok.loc, "either array or index must be pointer type");
@@ -387,7 +389,6 @@ postfixexpr(struct scope *s, struct expression *r)
 			}
 			if (arr->type->base->incomplete)
 				error(&tok.loc, "array is pointer to incomplete type");
-			lvalueconvert(idx);
 			if (!(typeprop(idx->type) & PROPINT))
 				error(&tok.loc, "index is not an integer type");
 			tmp = mkbinaryexpr(&tok.loc, TADD, arr, idx);
-- 
cgit v1.2.3