xdiff.cc
61 lines
| 1.5 KiB
| text/x-c
|
CppLexer
|
r36697 | /* | ||
* xdiff.cc - fuzzer harness for thirdparty/xdiff | ||||
* | ||||
* Copyright 2018, Google Inc. | ||||
* | ||||
* This software may be used and distributed according to the terms of | ||||
* the GNU General Public License, incorporated herein by reference. | ||||
*/ | ||||
#include "thirdparty/xdiff/xdiff.h" | ||||
#include <inttypes.h> | ||||
#include <stdlib.h> | ||||
|
r44012 | #include <fuzzer/FuzzedDataProvider.h> | ||
|
r38191 | |||
|
r36697 | extern "C" { | ||
int hunk_consumer(long a1, long a2, long b1, long b2, void *priv) | ||||
{ | ||||
// TODO: probably also test returning -1 from this when things break? | ||||
return 0; | ||||
} | ||||
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) | ||||
{ | ||||
|
r41175 | // Don't allow fuzzer inputs larger than 100k, since we'll just bog | ||
// down and not accomplish much. | ||||
if (Size > 100000) { | ||||
return 0; | ||||
} | ||||
|
r44012 | FuzzedDataProvider provider(Data, Size); | ||
std::string left = provider.ConsumeRandomLengthString(Size); | ||||
std::string right = provider.ConsumeRemainingBytesAsString(); | ||||
|
r36697 | mmfile_t a, b; | ||
|
r44012 | a.ptr = (char *)left.c_str(); | ||
a.size = left.size(); | ||||
b.ptr = (char *)right.c_str(); | ||||
b.size = right.size(); | ||||
|
r36697 | xpparam_t xpp = { | ||
XDF_INDENT_HEURISTIC, /* flags */ | ||||
}; | ||||
xdemitconf_t xecfg = { | ||||
XDL_EMIT_BDIFFHUNK, /* flags */ | ||||
hunk_consumer, /* hunk_consume_func */ | ||||
}; | ||||
xdemitcb_t ecb = { | ||||
NULL, /* priv */ | ||||
}; | ||||
xdl_diff(&a, &b, &xpp, &xecfg, &ecb); | ||||
return 0; // Non-zero return values are reserved for future use. | ||||
} | ||||
#ifdef HG_FUZZER_INCLUDE_MAIN | ||||
int main(int argc, char **argv) | ||||
{ | ||||
const char data[] = "asdf"; | ||||
return LLVMFuzzerTestOneInput((const uint8_t *)data, 4); | ||||
} | ||||
#endif | ||||
} // extern "C" | ||||