From 98c521793e28054722a8fc0007d4f68d28e94c51 Mon Sep 17 00:00:00 2001
From: Stanislav Gromov <gromovstanislav@yandex.ru>
Date: Sun, 6 Dec 2020 20:41:52 +0700
Subject: [PATCH] Fix potential NULL pointer dereferences

---
 source/compiler/memfile.c | 5 +++++
 source/compiler/sclist.c  | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/source/compiler/memfile.c b/source/compiler/memfile.c
index 4307589..71fa50f 100644
--- a/source/compiler/memfile.c
+++ b/source/compiler/memfile.c
@@ -32,6 +32,11 @@ memfile_t *memfile_creat(const char *name, size_t init)
 	mf.offs = 0;
 
 	pmf = (memfile_t *)malloc(sizeof(memfile_t));
+	if (!pmf)
+	{
+		free(mf.base);
+		return NULL;
+	}
 	memcpy(pmf, &mf, sizeof(memfile_t));
 
 	pmf->name = strdup(name);
diff --git a/source/compiler/sclist.c b/source/compiler/sclist.c
index 516a276..f15ddd5 100644
--- a/source/compiler/sclist.c
+++ b/source/compiler/sclist.c
@@ -44,7 +44,8 @@
 SC_FUNC char* duplicatestring(const char* sourcestring)
 {
   char* result=(char*)malloc(strlen(sourcestring)+1);
-  strcpy(result,sourcestring);
+  if (result!=NULL)
+    strcpy(result,sourcestring);
   return result;
 }