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-rw-r--r--src/liblzma/lzma/lzma2_encoder.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/liblzma/lzma/lzma2_encoder.c b/src/liblzma/lzma/lzma2_encoder.c
index 4b6b2311..5043a07e 100644
--- a/src/liblzma/lzma/lzma2_encoder.c
+++ b/src/liblzma/lzma/lzma2_encoder.c
@@ -409,6 +409,9 @@ lzma_lzma2_block_size(const void *options)
{
const lzma_options_lzma *const opt = options;
+ if (!IS_ENC_DICT_SIZE_VALID(opt->dict_size))
+ return UINT64_MAX;
+
// Use at least 1 MiB to keep compression ratio better.
return my_max((uint64_t)(opt->dict_size) * 3, UINT64_C(1) << 20);
}