An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in expand_mmacro() in modules/preprocs/nasm/nasm-pp.c. Reference: https://github.com/yasm/yasm/issues/173
Created yasm tracking bugs for this issue: Affects: epel-all [bug 2122752] Affects: fedora-all [bug 2122753]