From 4c165cbd078eba262e50d69cc638b52175df926a Mon Sep 17 00:00:00 2001
From: Wolfgang Bumiller <wolfgang.linux@bumiller.com>
Date: Tue, 1 May 2012 15:09:17 +0200
Subject: [PATCH 1/1] ast_instantiate should check return value of mem_a and
 return NULL on error

---
 ast.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ast.c b/ast.c
index 0fe0362..3595524 100644
--- a/ast.c
+++ b/ast.c
@@ -29,6 +29,9 @@
 
 #define ast_instantiate(T, ctx, destroyfn)                          \
     T* self = (T*)mem_a(sizeof(T));                                 \
+    if (!self) {                                                    \
+        return NULL;                                                \
+    }                                                               \
     ast_node_init((ast_node*)self, ctx);                            \
     ( (ast_node*)self )->node.destroy = (ast_node_delete*)destroyfn
 
-- 
2.39.2