libfuzzer

Hey there. These days I've been playing with libfuzzer, a tool that comes with clang compiler and that allows us to fuzz a program compiled with clang. The fuzzing consists on passing (pseudo-)random data as program input and check if that breaks. To do this with libfuzzer, it is required to define in the program a function called LLVMFuzzerTestOneInput that accepts a buffer of bytes as argument. Then libfuzzer will call this function in a loop with different data. [Read More]