emit both c++ and c in fuzzer
improve c++ fuzzing
add testcase for i1 constants being properly unsigned
fix fuzz checker
reduce some fuzzer output
suppress native warnings in fuzzer, csmith emits many
improve fuzzing to detect asm validation errors
add fuzz testcase
add missing asm coercion to va_arg handler; #2120
Merge remote-tracking branch 'upstream/incoming' into incoming