From 3fae6fbf464ed842ac022fb9e2202a1d18f3f455 Mon Sep 17 00:00:00 2001
From: Max Horn
Date: Wed, 28 May 2003 02:06:53 +0000
Subject: added some missing checks for file being open before reading/writing

svn-id: r8043
---
 common/file.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'common')

diff --git a/common/file.cpp b/common/file.cpp
index 788b2b57cb..0b9dbbef68 100644
--- a/common/file.cpp
+++ b/common/file.cpp
@@ -230,6 +230,11 @@ uint32 File::read(void *ptr, uint32 len) {
 byte File::readByte() {
 	byte b;
 
+	if (_handle == NULL) {
+		error("File is not open!");
+		return 0;
+	}
+
 	if (fread(&b, 1, 1, _handle) != 1) {
 		clearerr(_handle);
 		_ioFailed = true;
@@ -293,6 +298,10 @@ uint32 File::write(void *ptr, uint32 len) {
 void File::writeByte(byte value) {
 	value ^= _encbyte;
 
+	if (_handle == NULL) {
+		error("File is not open!");
+	}
+
 	if (fwrite(&value, 1, 1, _handle) != 1) {
 		clearerr(_handle);
 		_ioFailed = true;
-- 
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