The library is not annotated for Memory Sanitizer.

[alexey-milovidov]

Example:

==341==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x41021543 in Lizard_compress_fastSmall obj-x86_64-linux-gnu/../contrib/lizard/lib/lizard_parser_fastsmall.h:83:45
    #1 0x41021543 in Lizard_compress_generic obj-x86_64-linux-gnu/../contrib/lizard/lib/lizard_compress.c:506:19
    #2 0x41021543 in Lizard_compress_extState obj-x86_64-linux-gnu/../contrib/lizard/lib/lizard_compress.c:592:12
    #3 0x4102c480 in Lizard_compress obj-x86_64-linux-gnu/../contrib/lizard/lib/lizard_compress.c:602:13

[filimonov]

Also https://github.com/inikep/lizard/pull/26