$ cargo run --bin harnesser atoi regcomp
[2022-05-01T04:56:35Z INFO  harnesser] Found 1301 functions.
[2022-05-01T04:56:35Z INFO  harnesser] Generating fuzzer for atoi: int atoi(const char *)
[2022-05-01T04:56:35Z INFO  harnesser] Harness code:
    #include <cstddef>
    #include <cstdint>
    /* Header file this harness is fuzzing against */
    #include <stdlib.h>
    /* FuzzedDataProvider header library */
    #include <fuzzed_data_provider.hh>
    
    __AFL_FUZZ_INIT();
    
    /* Persistent-mode fuzzing ready harness, can't use this to debug the program */
    int main() {
    
    #ifdef __AFL_HAVE_MANUAL_CONTROL
        __AFL_INIT();
    #endif
    
        uint8_t *data = (uint8_t *)__AFL_FUZZ_TESTCASE_BUF;
    
        while (__AFL_LOOP(10000)) {
            size_t len = (size_t)__AFL_FUZZ_TESTCASE_LEN;
    
            try {
                FuzzedDataProvider fdp(data, len);
                /* clang-format off */
                const char * param0 = fdp.consume<char>(fdp.consume<uint8_t>());
                int rv = atoi(param0);
    
                /* clang-format on */
            } catch (FuzzedDataProviderException &e) {
                continue;
            }
        }
    
        return 0;
    }
afl-cc ++3.15a by Michal Zalewski, Laszlo Szekeres, Marc Heuse - mode: LLVM-PCGUARD
SanitizerCoveragePCGUARD++3.15a
[+] Instrumented 88 locations with no collisions (non-hardened mode).
[2022-05-01T04:56:36Z INFO  harnesser] Generating fuzzer for regcomp: int regcomp(regex_t *, const char *, int)
[2022-05-01T04:56:36Z INFO  harnesser] Harness code:
    #include <cstddef>
    #include <cstdint>
    /* Header file this harness is fuzzing against */
    #include <regex.h>
    /* FuzzedDataProvider header library */
    #include <fuzzed_data_provider.hh>
    
    __AFL_FUZZ_INIT();
    
    /* Persistent-mode fuzzing ready harness, can't use this to debug the program */
    int main() {
    
    #ifdef __AFL_HAVE_MANUAL_CONTROL
        __AFL_INIT();
    #endif
    
        uint8_t *data = (uint8_t *)__AFL_FUZZ_TESTCASE_BUF;
    
        while (__AFL_LOOP(10000)) {
            size_t len = (size_t)__AFL_FUZZ_TESTCASE_LEN;
    
            try {
                FuzzedDataProvider fdp(data, len);
                /* clang-format off */
                regex_t * param0 = new regex_t[1];
                const char * param1 = fdp.consume<char>(fdp.consume<uint8_t>());
                int param2 = fdp.consume<int>();
                int rv = regcomp(param0, param1, param2);
    
                /* clang-format on */
            } catch (FuzzedDataProviderException &e) {
                continue;
            }
        }
    
        return 0;
    }