need fail-on-first support and unit tests for: * branch (actually, now branch-with-vector-compares) * standard integer arithmetic (if zero, "fail") * floating-point arithmetic (if zero or non-zero) * FP compare (FEQ/FLT etc.) which is a variant of standard int * LD/ST at end of memory page good unit test examples: strncpy and strlen
SV 0.6 (with RISC-V) is retired