diff options
Diffstat (limited to 'src/liblzma/delta/delta_decoder.c')
| -rw-r--r-- | src/liblzma/delta/delta_decoder.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/liblzma/delta/delta_decoder.c b/src/liblzma/delta/delta_decoder.c index 13d8a28f..77cf65cc 100644 --- a/src/liblzma/delta/delta_decoder.c +++ b/src/liblzma/delta/delta_decoder.c @@ -42,7 +42,12 @@ delta_decode(void *coder_ptr, const lzma_allocator *allocator, in, in_pos, in_size, out, out_pos, out_size, action); - decode_buffer(coder, out + out_start, *out_pos - out_start); + // out might be NULL. In that case size == 0. Null pointer + 0 is + // undefined behavior so skip the call in that case as it would + // do nothing anyway. + const size_t size = *out_pos - out_start; + if (size > 0) + decode_buffer(coder, out + out_start, size); return ret; } |