On 07/14/2014 01:09 PM, Fabiano Fidêncio wrote:
Check for MELCSTAT - 1 to get inside the branch, otherwise
MELCSTATES (missing ES, also below missing S)
(...)->rgb_state.melcstate may be up to MELCSTATE after the
pre-incrementing, which would result in an access to a position
that is out bounds of the array size MELCSTATE.
Ack
Thanks,
Uri.
---
common/quic.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/common/quic.c b/common/quic.c
index c10e3c4..4584336 100644
--- a/common/quic.c
+++ b/common/quic.c
@@ -578,7 +578,7 @@ static void encode_run(Encoder *encoder, unsigned int
runlen) //todo: try use en
while (runlen >= encoder->rgb_state.melcorder) {
hits++;
runlen -= encoder->rgb_state.melcorder;
- if (encoder->rgb_state.melcstate < MELCSTATES) {
+ if (encoder->rgb_state.melcstate < MELCSTATES - 1) {
encoder->rgb_state.melclen = J[++encoder->rgb_state.melcstate];
encoder->rgb_state.melcorder = (1L << encoder->rgb_state.melclen);
}
@@ -610,7 +610,7 @@ static void encode_channel_run(Encoder *encoder, Channel
*channel, unsigned int
while (runlen >= channel->state.melcorder) {
hits++;
runlen -= channel->state.melcorder;
- if (channel->state.melcstate < MELCSTATES) {
+ if (channel->state.melcstate < MELCSTATES - 1) {
channel->state.melclen = J[++channel->state.melcstate];
channel->state.melcorder = (1L << channel->state.melclen);
}
@@ -647,7 +647,7 @@ static int decode_run(Encoder *encoder)
for (hits = 1; hits <= temp; hits++) {
runlen += encoder->rgb_state.melcorder;
- if (encoder->rgb_state.melcstate < MELCSTATES) {
+ if (encoder->rgb_state.melcstate < MELCSTATES - 1) {
encoder->rgb_state.melclen =
J[++encoder->rgb_state.melcstate];
encoder->rgb_state.melcorder = (1U <<
encoder->rgb_state.melclen);
}
@@ -688,7 +688,7 @@ static int decode_channel_run(Encoder *encoder, Channel
*channel)
for (hits = 1; hits <= temp; hits++) {
runlen += channel->state.melcorder;
- if (channel->state.melcstate < MELCSTATES) {
+ if (channel->state.melcstate < MELCSTATES - 1) {
channel->state.melclen = J[++channel->state.melcstate];
channel->state.melcorder = (1U << channel->state.melclen);
}
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