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ICU-22479 Improve collator_compare_fuzzer

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See #2574
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Frank Tang 2023-09-01 23:33:48 +00:00 • committed by Frank Yung-Fong Tang
parent d501225db2
commit 869713b65f
2 changed files with 22 additions and 3 deletions
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25
icu4c/source/test/fuzzer/collator_compare_fuzzer.cpp
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@ -1,6 +1,7 @@
// © 2019 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
#include <array>
#include <cstring>
#include "fuzzer_utils.h"
@ -10,23 +11,41 @@
IcuEnvironment* env = new IcuEnvironment();
static const std::array<icu::Collator::ECollationStrength, 5> kStrength = {
icu::Collator::PRIMARY,
icu::Collator::SECONDARY,
icu::Collator::TERTIARY,
icu::Collator::QUATERNARY,
icu::Collator::IDENTICAL
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
UErrorCode status = U_ZERO_ERROR;
if (size < 2)
uint16_t rnd16;
if (size < 2 + sizeof(rnd16))
return 0;
std::memcpy(&rnd16, data, sizeof(rnd16));
size -= sizeof(rnd16);
data += sizeof(rnd16);
icu::Collator::ECollationStrength strength = kStrength[rnd16 % kStrength.size()];
const icu::Locale& locale = GetRandomLocale(rnd16 / kStrength.size());
std::unique_ptr<char16_t> compbuff1(new char16_t[size/4]);
std::memcpy(compbuff1.get(), data, (size/4)*2);
data = data + size/2;
std::unique_ptr<char16_t> compbuff2(new char16_t[size/4]);
std::memcpy(compbuff2.get(), data, (size/4)*2);
icu::LocalPointer<icu::Collator> fuzzCollator(
icu::Collator::createInstance(icu::Locale::getUS(), status), status);
icu::Collator::createInstance(locale, status), status);
if (U_FAILURE(status))
return 0;
fuzzCollator->setStrength(icu::Collator::TERTIARY);
fuzzCollator->setStrength(strength);
fuzzCollator->compare(compbuff1.get(), size/4,
compbuff2.get(), size/4);

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icu4c/source/test/fuzzer/collator_compare_fuzzer_seed_corpus.txt Normal file
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