diff options
Diffstat (limited to 'src/liblzma/simple')
| -rw-r--r-- | src/liblzma/simple/simple_coder.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/liblzma/simple/simple_coder.c b/src/liblzma/simple/simple_coder.c index 4f499bef..ed2d7fb0 100644 --- a/src/liblzma/simple/simple_coder.c +++ b/src/liblzma/simple/simple_coder.c @@ -139,9 +139,11 @@ simple_code(void *coder_ptr, const lzma_allocator *allocator, return ret; } - // Filter out[]. + // Filter out[] unless there is nothing to filter. + // This way we avoid null pointer + 0 (undefined behavior) + // when out == NULL. const size_t size = *out_pos - out_start; - const size_t filtered = call_filter( + const size_t filtered = size == 0 ? 0 : call_filter( coder, out + out_start, size); const size_t unfiltered = size - filtered; |