walkero
/
openjpeg
1
0
Fork 0
Code Issues Pull Requests Projects Releases 1 Wiki Activity

suppress valgrind error - avoid accessing uninitialized memory in mq encoder

This commit is contained in:
Aaron Boxer 2016-01-30 10:05:46 -05:00
parent e3100f714c
commit 0069a2bd2f
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/lib/openjp2/mqc.c
View File

@ -203,14 +203,20 @@ static opj_mqc_state_t mqc_states[47 * 2] = {
*/
static void opj_mqc_byteout(opj_mqc_t *mqc) {
OPJ_BYTE bp_in_bounds = (mqc->bp >= mqc->start);
if (bp_in_bounds & (*mqc->bp == 0xff)) {
/* avoid accessing uninitialized memory*/
if (mqc->bp == mqc->start-1) {
mqc->bp++;
*mqc->bp = (OPJ_BYTE)(mqc->c >> 19);
mqc->c &= 0x7ffff;
mqc->ct = 8;
}
else if (*mqc->bp == 0xff) {
mqc->bp++;
*mqc->bp = (OPJ_BYTE)(mqc->c >> 20);
mqc->c &= 0xfffff;
mqc->ct = 7;
} else {
if ((bp_in_bounds ^ 1) | ((mqc->c & 0x8000000) == 0)) {
if ((mqc->c & 0x8000000) == 0) {
mqc->bp++;
*mqc->bp = (OPJ_BYTE)(mqc->c >> 19);
mqc->c &= 0x7ffff;