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codebook: reject invalid codes
author
Kostya Shishkov
<kostya.shishkov@gmail.com>
Sat, 8 Dec 2018 14:21:22 +0000
(15:21 +0100)
committer
Kostya Shishkov
<kostya.shishkov@gmail.com>
Sat, 8 Dec 2018 14:21:22 +0000
(15:21 +0100)
src/io/codebook.rs
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diff --git
a/src/io/codebook.rs
b/src/io/codebook.rs
index 5bfd71991e186cfe7c855d2ce11411e1d27d8a59..3d1e8d0e0112e2d2032788e6723bfb17f06014a0 100644
(file)
--- a/
src/io/codebook.rs
+++ b/
src/io/codebook.rs
@@
-195,7
+195,12
@@
impl<S: Copy> Codebook<S> {
let mut symidx: usize = 0;
for i in 0..cb.len() {
let bits = cb.bits(i);
- if bits > 0 { nnz = nnz + 1; }
+ if bits > 0 {
+ nnz = nnz + 1;
+ if cb.code(i) >= (1 << bits) {
+ return Err(CodebookError::InvalidCodebook);
+ }
+ }
maxbits = max(bits, maxbits);
if bits > MAX_LUT_BITS {
let code = cb.code(i);