From: Toni Wilen <twilen@winuae.net>
Date: Fri, 18 May 2018 17:07:09 +0000 (+0300)
Subject: Exit if identifier read fails.
X-Git-Tag: 4000~47
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=052cc61816d029ea31c2735896a91dba619a3b01;p=francis%2Fwinuae.git

Exit if identifier read fails.
---

diff --git a/memory.cpp b/memory.cpp
index 068a0f55..57a50ee5 100644
--- a/memory.cpp
+++ b/memory.cpp
@@ -1372,7 +1372,7 @@ static const uae_char *kickstring = "exec.library";
 
 static int read_kickstart (struct zfile *f, uae_u8 *mem, int size, int dochecksum, int noalias)
 {
-	uae_char buffer[20];
+	uae_char buffer[11];
 	int i, j, oldpos;
 	int cr = 0, kickdisk = 0;
 
@@ -1382,7 +1382,9 @@ static int read_kickstart (struct zfile *f, uae_u8 *mem, int size, int dochecksu
 		zfile_fseek (f, 0, SEEK_SET);
 	}
 	oldpos = zfile_ftell (f);
-	i = zfile_fread (buffer, 1, 11, f);
+	i = zfile_fread (buffer, 1, sizeof(buffer), f);
+	if (i < sizeof(buffer))
+		return 0;
 	if (!memcmp (buffer, "KICK", 4)) {
 		zfile_fseek (f, 512, SEEK_SET);
 		kickdisk = 1;