nullPointerArithmetic
ftp://ftp.de.debian.org/debian/pool/main/s/suitesparse-graphblas/suitesparse-graphblas_7.4.0+dfsg.orig.tar.xz
head GraphBLAS-7.4.0/zstd/zstd_subset/compress/zstd_ldm.c:335:54: error: Pointer addition with NULL pointer. [nullPointerArithmetic]
head GraphBLAS-7.4.0/zstd/zstd_subset/compress/zstd_ldm.c:336:52: error: Pointer addition with NULL pointer. [nullPointerArithmetic]