D7368: fuzz: migrate bdiff fuzzer to use FuzzedDataProvider
durin42 (Augie Fackler)
phabricator at mercurial-scm.org
Mon Nov 11 22:02:13 UTC 2019
durin42 created this revision.
Herald added a subscriber: mercurial-devel.
Herald added a reviewer: hg-reviewers.
REPOSITORY
rHG Mercurial
REVISION DETAIL
https://phab.mercurial-scm.org/D7368
AFFECTED FILES
contrib/fuzz/bdiff.cc
CHANGE DETAILS
diff --git a/contrib/fuzz/bdiff.cc b/contrib/fuzz/bdiff.cc
--- a/contrib/fuzz/bdiff.cc
+++ b/contrib/fuzz/bdiff.cc
@@ -9,22 +9,20 @@
#include <memory>
#include <stdlib.h>
-#include "fuzzutil.h"
+#include <fuzzer/FuzzedDataProvider.h>
extern "C" {
#include "bdiff.h"
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
{
- auto maybe_inputs = SplitInputs(Data, Size);
- if (!maybe_inputs) {
- return 0;
- }
- auto inputs = std::move(maybe_inputs.value());
+ FuzzedDataProvider provider(Data, Size);
+ std::string left = provider.ConsumeRandomLengthString(Size);
+ std::string right = provider.ConsumeRemainingBytesAsString();
struct bdiff_line *a, *b;
- int an = bdiff_splitlines(inputs.left.get(), inputs.left_size, &a);
- int bn = bdiff_splitlines(inputs.right.get(), inputs.right_size, &b);
+ int an = bdiff_splitlines(left.c_str(), left.size(), &a);
+ int bn = bdiff_splitlines(right.c_str(), right.size(), &b);
struct bdiff_hunk l;
bdiff_diff(a, an, b, bn, &l);
free(a);
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