Is it necessary to put the "-fsanitize-undefined-trap-on-error" flag when using AFL with UBSan?

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Is it necessary to put the "-fsanitize-undefined-trap-on-error" flag when using AFL with UBSan? #159

Open zhoulaifu opened 2 years ago

zhoulaifu commented 2 years ago

I am building a C project in this way:

make CC=afl-gcc CFLAGS="-g -fsanitize=undefined" The goal is to detect undefined behavior bugs with AFL. Do I also have to put "-fsanitize-undefined-trap-on-error" in CFLAGS?

%afl-gcc version
afl-cc++2.68c by Michal Zalewski