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ICU-22479 Add Fuzzer for ListFormat

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Frank Tang 2023-09-15 16:26:50 -07:00 • committed by Frank Yung-Fong Tang
parent f3b869cbb0
commit 6df1babae2
2 changed files with 61 additions and 1 deletions
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2
icu4c/source/test/fuzzer/Makefile.in
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@ -33,7 +33,7 @@ CPPFLAGS += -I$(srcdir) -I$(top_srcdir)/common -I$(top_srcdir)/i18n -I$(top_srcd
DEFS += -D'U_TOPSRCDIR="$(top_srcdir)/"' -D'U_TOPBUILDDIR="$(BUILDDIR)"'
LIBS = $(LIBCTESTFW) $(LIBICUTOOLUTIL) $(LIBICUIO) $(LIBICUI18N) $(LIBICUUC) $(DEFAULT_LIBS) $(LIB_M)
FUZZER_TARGETS = break_iterator_fuzzer calendar_fuzzer collator_compare_fuzzer collator_rulebased_fuzzer converter_fuzzer date_format_fuzzer locale_fuzzer locale_morph_fuzzer number_format_fuzzer ucasemap_fuzzer uloc_canonicalize_fuzzer uloc_for_language_tag_fuzzer uloc_get_name_fuzzer uloc_is_right_to_left_fuzzer uloc_open_keywords_fuzzer unicode_string_codepage_create_fuzzer uregex_open_fuzzer
FUZZER_TARGETS = break_iterator_fuzzer calendar_fuzzer collator_compare_fuzzer collator_rulebased_fuzzer converter_fuzzer date_format_fuzzer list_format_fuzzer locale_fuzzer locale_morph_fuzzer number_format_fuzzer ucasemap_fuzzer uloc_canonicalize_fuzzer uloc_for_language_tag_fuzzer uloc_get_name_fuzzer uloc_is_right_to_left_fuzzer uloc_open_keywords_fuzzer unicode_string_codepage_create_fuzzer uregex_open_fuzzer
OBJECTS = $(FUZZER_TARGETS:%=%.o)
OBJECTS += fuzzer_driver.o locale_util.o

60
icu4c/source/test/fuzzer/list_format_fuzzer.cpp Normal file
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@ -0,0 +1,60 @@
// © 2023 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// Fuzzer for ICU Calendar.
#include <cstring>
#include "fuzzer_utils.h"
#include "unicode/listformatter.h"
#include "unicode/locid.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
uint16_t rnd;
UListFormatterType type;
UListFormatterWidth width;
if (size < sizeof(rnd) + sizeof(type) + sizeof(width)) return 0;
icu::StringPiece fuzzData(reinterpret_cast<const char *>(data), size);
std::memcpy(&rnd, fuzzData.data(), sizeof(rnd));
icu::Locale locale = GetRandomLocale(rnd);
fuzzData.remove_prefix(sizeof(rnd));
std::memcpy(&type, fuzzData.data(), sizeof(type));
fuzzData.remove_prefix(sizeof(type));
type = static_cast<UListFormatterType>(
static_cast<int>(type) % (static_cast<int>(ULISTFMT_TYPE_UNITS) + 1));
std::memcpy(&width, fuzzData.data(), sizeof(width));
fuzzData.remove_prefix(sizeof(width));
width = static_cast<UListFormatterWidth>(
static_cast<int>(width) % (static_cast<int>(ULISTFMT_WIDTH_NARROW) + 1));
size_t len = fuzzData.size() / sizeof(char16_t);
icu::UnicodeString text(false, reinterpret_cast<const char16_t*>(fuzzData.data()), len);
const icu::UnicodeString items[] = { text, text, text, text };
UErrorCode status = U_ZERO_ERROR;
std::unique_ptr<icu::ListFormatter> listFormat(
icu::ListFormatter::createInstance(locale, status));
if (U_SUCCESS(status)) {
for (size_t i = 0; i <= 4; i++) {
icu::UnicodeString appendTo;
status = U_ZERO_ERROR;
listFormat->format(items, i, appendTo, status);
}
}
status = U_ZERO_ERROR;
listFormat.reset(
icu::ListFormatter::createInstance(locale, type, width, status));
if (U_SUCCESS(status)) {
for (size_t i = 0; i <= 4; i++) {
icu::UnicodeString appendTo;
status = U_ZERO_ERROR;
listFormat->format(items, i, appendTo, status);
}
}
return EXIT_SUCCESS;
}