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-rw-r--r--src/liblzma/common/index_decoder.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/liblzma/common/index_decoder.c b/src/liblzma/common/index_decoder.c
index e71fc6df..b2689885 100644
--- a/src/liblzma/common/index_decoder.c
+++ b/src/liblzma/common/index_decoder.c
@@ -180,8 +180,11 @@ index_decode(void *coder_ptr, const lzma_allocator *allocator,
return LZMA_OK;
if (((coder->crc32 >> (coder->pos * 8)) & 0xFF)
- != in[(*in_pos)++])
+ != in[(*in_pos)++]) {
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
return LZMA_DATA_ERROR;
+#endif
+ }
} while (++coder->pos < 4);