From a26a6a56d08fd38b297a4ac022b9053f6f1ca94b Mon Sep 17 00:00:00 2001
From: Kayne Ruse <kayneruse@gmail.com>
Date: Fri, 10 Feb 2023 11:49:59 +0000
Subject: [PATCH] Patched a pre/postfix increment/decrement segfault

---
 source/toy_parser.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/source/toy_parser.c b/source/toy_parser.c
index b1a2f85..b6aa691 100644
--- a/source/toy_parser.c
+++ b/source/toy_parser.c
@@ -676,6 +676,10 @@ static Toy_Opcode incrementPrefix(Toy_Parser* parser, Toy_ASTNode** nodeHandle)
 	Toy_ASTNode* tmpNode = NULL;
 	identifier(parser, &tmpNode);
 
+	if (!tmpNode) {
+		return TOY_OP_EOF;
+	}
+
 	Toy_emitASTNodePrefixIncrement(nodeHandle, tmpNode->atomic.literal);
 
 	Toy_freeASTNode(tmpNode);
@@ -689,6 +693,10 @@ static Toy_Opcode incrementInfix(Toy_Parser* parser, Toy_ASTNode** nodeHandle) {
 
 	advance(parser);
 
+	if (!tmpNode) {
+		return TOY_OP_EOF;
+	}
+
 	Toy_emitASTNodePostfixIncrement(nodeHandle, tmpNode->atomic.literal);
 
 	Toy_freeASTNode(tmpNode);
@@ -700,7 +708,11 @@ static Toy_Opcode decrementPrefix(Toy_Parser* parser, Toy_ASTNode** nodeHandle)
 	advance(parser);
 
 	Toy_ASTNode* tmpNode = NULL;
-	identifier(parser, &tmpNode); //weird
+	identifier(parser, &tmpNode);
+	
+	if (!tmpNode) {
+		return TOY_OP_EOF;
+	}
 
 	Toy_emitASTNodePrefixDecrement(nodeHandle, tmpNode->atomic.literal);
 
@@ -715,6 +727,10 @@ static Toy_Opcode decrementInfix(Toy_Parser* parser, Toy_ASTNode** nodeHandle) {
 
 	advance(parser);
 
+	if (!tmpNode) {
+		return TOY_OP_EOF;
+	}
+
 	Toy_emitASTNodePostfixDecrement(nodeHandle, tmpNode->atomic.literal);
 
 	Toy_freeASTNode(tmpNode);