|
 |
83be9e |
Backport of relevant parts of upstream commit:
|
|
|
83be9e |
|
|
|
83be9e |
From 1e84674d95353c64e5c4c0e7232ae86fd6ea813b Mon Sep 17 00:00:00 2001
|
|
|
83be9e |
From: Michael Adams <mdadams@ece.uvic.ca>
|
|
|
83be9e |
Date: Tue, 25 Oct 2016 07:01:50 -0700
|
|
|
83be9e |
Subject: [PATCH] Changed the JPC bitstream code to more gracefully handle a
|
|
|
83be9e |
request for a larger sized integer than what can be handled (i.e., return
|
|
|
83be9e |
with an error instead of failing an assert).
|
|
|
83be9e |
|
|
|
83be9e |
diff -pruN jasper-1.900.1.orig/src/libjasper/jpc/jpc_bs.c jasper-1.900.1/src/libjasper/jpc/jpc_bs.c
|
|
|
83be9e |
--- jasper-1.900.1.orig/src/libjasper/jpc/jpc_bs.c 2007-01-19 22:43:07.000000000 +0100
|
|
|
83be9e |
+++ jasper-1.900.1/src/libjasper/jpc/jpc_bs.c 2017-03-31 23:00:31.000000000 +0200
|
|
|
83be9e |
@@ -195,7 +195,10 @@ long jpc_bitstream_getbits(jpc_bitstream
|
|
|
83be9e |
|
|
|
83be9e |
/* We can reliably get at most 31 bits since ISO/IEC 9899 only
|
|
|
83be9e |
guarantees that a long can represent values up to 2^31-1. */
|
|
|
83be9e |
- assert(n >= 0 && n < 32);
|
|
|
83be9e |
+ //assert(n >= 0 && n < 32);
|
|
|
83be9e |
+ if (n < 0 || n >= 32) {
|
|
|
83be9e |
+ return -1;
|
|
|
83be9e |
+ }
|
|
|
83be9e |
|
|
|
83be9e |
/* Get the number of bits requested from the specified bit stream. */
|
|
|
83be9e |
v = 0;
|
|
|
83be9e |
@@ -215,7 +218,10 @@ int jpc_bitstream_putbits(jpc_bitstream_
|
|
|
83be9e |
|
|
|
83be9e |
/* We can reliably put at most 31 bits since ISO/IEC 9899 only
|
|
|
83be9e |
guarantees that a long can represent values up to 2^31-1. */
|
|
|
83be9e |
- assert(n >= 0 && n < 32);
|
|
|
83be9e |
+ //assert(n >= 0 && n < 32);
|
|
|
83be9e |
+ if (n < 0 || n >= 32) {
|
|
|
83be9e |
+ return EOF;
|
|
|
83be9e |
+ }
|
|
|
83be9e |
/* Ensure that only the bits to be output are nonzero. */
|
|
|
83be9e |
assert(!(v & (~JAS_ONES(n))));
|
|
|
83be9e |
|