ICU-20652 Adds Makefile.in, a fuzzer driver, and minor changes to in fuzzer

targets to test/fuzzer/ directory. This will enable compilation and
smoke test of fuzzer targets as part of the ICU continuous build.

ICU-20652 Fixed exit-on-error behaviour of fuzzer targets execution.
Minor clean-ups and improvements

ICU-20652 Modifies fuzzer/Makefile.in to fix Windows build issue.

ICU-20627 Adds explicit enablement of fuzzer targets build to ICU4C
configuration and Makefile.in. File 'configure' was created from
'configure.ac' by executing 'autoreconf'.

autoreconf added some new entries into 'configure' about runstatedir. Not sure
why it did this, they are not related to fuzzer.

diff --git a/icu4c/source/aclocal.m4 b/icu4c/source/aclocal.m4
index 413f50971a5f67ce47be52e219de4ed2258961e4..b5ee8a9d1e180999d41df3663fe6739b5df142ec 100644 (file)
--- a/icu4c/source/aclocal.m4
+++ b/icu4c/source/aclocal.m4
@@ -1,6 +1,6 @@
-# generated automatically by aclocal 1.15 -*- Autoconf -*-
+# generated automatically by aclocal 1.15.1 -*- Autoconf -*-
 
-# Copyright (C) 1996-2014 Free Software Foundation, Inc.
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -13,7 +13,7 @@
 
 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
 dnl pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
-dnl serial 11 (pkg-config-0.29.1)
+dnl serial 11 (pkg-config-0.29)
 dnl
 dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
 dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
@@ -55,7 +55,7 @@ dnl
 dnl See the "Since" comment for each macro you use to see what version
 dnl of the macros you require.
 m4_defun([PKG_PREREQ],
-[m4_define([PKG_MACROS_VERSION], [0.29.1])
+[m4_define([PKG_MACROS_VERSION], [0.29])
 m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
     [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
 ])dnl PKG_PREREQ

diff --git a/icu4c/source/configure b/icu4c/source/configure
index 1db59eb0ed5d562a50f9a53d130b9aeb43214763..25ecc9f3caa9c3884225081aa3105010555c4511 100755 (executable)
--- a/icu4c/source/configure
+++ b/icu4c/source/configure
@@ -645,6 +645,8 @@ ICULIBSUFFIX
 DATA_PACKAGING_MODE
 thepkgicudatadir
 pkgicudatadir
+U_HAVE_FUZZER
+FUZZER_TRUE
 U_HAVE_TOOLS
 TOOLS_TRUE
 U_HAVE_LAYOUTEX
@@ -753,6 +755,7 @@ infodir
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -797,6 +800,7 @@ enable_icuio
 enable_layoutex
 enable_layout
 enable_tools
+enable_fuzzer
 with_data_packaging
 with_library_suffix
 enable_tests
@@ -857,6 +861,7 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1109,6 +1114,15 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1246,7 +1260,7 @@ fi
 for ac_var in  exec_prefix prefix bindir sbindir libexecdir datarootdir \
                datadir sysconfdir sharedstatedir localstatedir includedir \
                oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-               libdir localedir mandir
+               libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1399,6 +1413,7 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -1454,6 +1469,7 @@ Optional Features:
             icu-le-hb must be installed via pkg-config. See http://harfbuzz.org
 
   --enable-tools         build ICU's tools default=yes
+  --enable-fuzzer        build ICU's fuzzer test targets default=no
   --enable-tests          build ICU tests default=yes
   --enable-samples        build ICU samples default=yes
 
@@ -7665,6 +7681,28 @@ else
   U_HAVE_TOOLS=0
 fi
 
+# Enable/disable fuzzer target tests.
+# Check whether --enable-fuzzer was given.
+if test "${enable_fuzzer+set}" = set; then :
+  enableval=$enable_fuzzer; case "${enableval}" in
+               yes) fuzzer=true ;;
+               no)  fuzzer=false ;;
+               *) as_fn_error $? "bad value ${enableval} for --enable-fuzzer" "$LINENO" 5 ;;
+               esac
+else
+  fuzzer=false
+fi
+
+
+
+if test "$fuzzer" = true; then
+  FUZZER_TRUE=
+  U_HAVE_FUZZER=1
+else
+  FUZZER_TRUE='#'
+  U_HAVE_FUZZER=0
+fi
+
 
 # Check whether --with-data-packaging was given.
 if test "${with_data_packaging+set}" = set; then :
@@ -7883,7 +7921,7 @@ echo "CXXFLAGS=$CXXFLAGS"
 
 
 # output the Makefiles
-ac_config_files="$ac_config_files icudefs.mk Makefile data/pkgdataMakefile config/Makefile.inc config/icu.pc config/pkgdataMakefile data/Makefile stubdata/Makefile common/Makefile i18n/Makefile layoutex/Makefile io/Makefile extra/Makefile extra/uconv/Makefile extra/uconv/pkgdataMakefile extra/scrptrun/Makefile tools/Makefile tools/ctestfw/Makefile tools/toolutil/Makefile tools/makeconv/Makefile tools/genrb/Makefile tools/genccode/Makefile tools/gencmn/Makefile tools/gencnval/Makefile tools/gendict/Makefile tools/gentest/Makefile tools/gennorm2/Makefile tools/genbrk/Makefile tools/gensprep/Makefile tools/icuinfo/Makefile tools/icupkg/Makefile tools/icuswap/Makefile tools/pkgdata/Makefile tools/tzcode/Makefile tools/gencfu/Makefile tools/escapesrc/Makefile test/Makefile test/compat/Makefile test/testdata/Makefile test/testdata/pkgdataMakefile test/hdrtst/Makefile test/intltest/Makefile test/cintltst/Makefile test/iotest/Makefile test/letest/Makefile test/perf/Makefile test/perf/collationperf/Makefile test/perf/collperf/Makefile test/perf/collperf2/Makefile test/perf/dicttrieperf/Makefile test/perf/ubrkperf/Makefile test/perf/charperf/Makefile test/perf/convperf/Makefile test/perf/normperf/Makefile test/perf/DateFmtPerf/Makefile test/perf/howExpensiveIs/Makefile test/perf/strsrchperf/Makefile test/perf/unisetperf/Makefile test/perf/usetperf/Makefile test/perf/ustrperf/Makefile test/perf/utfperf/Makefile test/perf/utrie2perf/Makefile test/perf/leperf/Makefile samples/Makefile samples/date/Makefile samples/cal/Makefile samples/layout/Makefile"
+ac_config_files="$ac_config_files icudefs.mk Makefile data/pkgdataMakefile config/Makefile.inc config/icu.pc config/pkgdataMakefile data/Makefile stubdata/Makefile common/Makefile i18n/Makefile layoutex/Makefile io/Makefile extra/Makefile extra/uconv/Makefile extra/uconv/pkgdataMakefile extra/scrptrun/Makefile tools/Makefile tools/ctestfw/Makefile tools/toolutil/Makefile tools/makeconv/Makefile tools/genrb/Makefile tools/genccode/Makefile tools/gencmn/Makefile tools/gencnval/Makefile tools/gendict/Makefile tools/gentest/Makefile tools/gennorm2/Makefile tools/genbrk/Makefile tools/gensprep/Makefile tools/icuinfo/Makefile tools/icupkg/Makefile tools/icuswap/Makefile tools/pkgdata/Makefile tools/tzcode/Makefile tools/gencfu/Makefile tools/escapesrc/Makefile test/Makefile test/compat/Makefile test/testdata/Makefile test/testdata/pkgdataMakefile test/hdrtst/Makefile test/intltest/Makefile test/cintltst/Makefile test/iotest/Makefile test/letest/Makefile test/perf/Makefile test/perf/collationperf/Makefile test/perf/collperf/Makefile test/perf/collperf2/Makefile test/perf/dicttrieperf/Makefile test/perf/ubrkperf/Makefile test/perf/charperf/Makefile test/perf/convperf/Makefile test/perf/normperf/Makefile test/perf/DateFmtPerf/Makefile test/perf/howExpensiveIs/Makefile test/perf/strsrchperf/Makefile test/perf/unisetperf/Makefile test/perf/usetperf/Makefile test/perf/ustrperf/Makefile test/perf/utfperf/Makefile test/perf/utrie2perf/Makefile test/perf/leperf/Makefile test/fuzzer/Makefile samples/Makefile samples/date/Makefile samples/cal/Makefile samples/layout/Makefile"
 
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
@@ -8656,6 +8694,7 @@ do
     "test/perf/utfperf/Makefile") CONFIG_FILES="$CONFIG_FILES test/perf/utfperf/Makefile" ;;
     "test/perf/utrie2perf/Makefile") CONFIG_FILES="$CONFIG_FILES test/perf/utrie2perf/Makefile" ;;
     "test/perf/leperf/Makefile") CONFIG_FILES="$CONFIG_FILES test/perf/leperf/Makefile" ;;
+    "test/fuzzer/Makefile") CONFIG_FILES="$CONFIG_FILES test/fuzzer/Makefile" ;;
     "samples/Makefile") CONFIG_FILES="$CONFIG_FILES samples/Makefile" ;;
     "samples/date/Makefile") CONFIG_FILES="$CONFIG_FILES samples/date/Makefile" ;;
     "samples/cal/Makefile") CONFIG_FILES="$CONFIG_FILES samples/cal/Makefile" ;;

diff --git a/icu4c/source/configure.ac b/icu4c/source/configure.ac
index 03dad87cb552f4aba0ff69b1cc3e25428561e0d0..bf1f47421710fc736cec6d45da03669b256efe2c 100644 (file)
--- a/icu4c/source/configure.ac
+++ b/icu4c/source/configure.ac
@@ -1124,6 +1124,17 @@ AC_ARG_ENABLE(tools,
        tools=true)
 ICU_CONDITIONAL(TOOLS, test "$tools" = true)
 
+# Enable/disable fuzzer target tests.
+AC_ARG_ENABLE(fuzzer,
+       [  --enable-fuzzer        build ICU's fuzzer test targets [default=no]],
+       [case "${enableval}" in
+               yes) fuzzer=true ;;
+               no)  fuzzer=false ;;
+               *) AC_MSG_ERROR(bad value ${enableval} for --enable-fuzzer) ;;
+               esac],
+       fuzzer=false)
+ICU_CONDITIONAL(FUZZER, test "$fuzzer" = true)
+
 AC_ARG_WITH(data-packaging,
        [  --with-data-packaging     specify how to package ICU data. Possible values:
         files    raw files (.res, etc)
@@ -1387,6 +1398,7 @@ AC_CONFIG_FILES([icudefs.mk \
                test/perf/utfperf/Makefile \
                test/perf/utrie2perf/Makefile \
                test/perf/leperf/Makefile \
+               test/fuzzer/Makefile \
                samples/Makefile samples/date/Makefile \
                samples/cal/Makefile samples/layout/Makefile])
 AC_OUTPUT

diff --git a/icu4c/source/test/Makefile.in b/icu4c/source/test/Makefile.in
index 7bb5b222829e9c29485e5232ca7034ec76a004c3..5affa11703aa2c213fbb5cc1470fbb1c1b0ca30c 100644 (file)
--- a/icu4c/source/test/Makefile.in
+++ b/icu4c/source/test/Makefile.in
@@ -15,6 +15,8 @@ include $(top_builddir)/icudefs.mk
 ## Build directory information
 subdir = test
 
+@FUZZER_TRUE@FUZZER=fuzzer
+
 @ICUIO_TRUE@IOTEST = iotest
 
 # the letest directory depends on layoutex.
@@ -32,7 +34,7 @@ STATUS_FULL = $(shell pwd)/$(STATUS_TMP)
 ## Files to remove for 'make clean'
 CLEANFILES = *~ $(STATUS_TMP)
 
-SUBDIRS = $(TESTDATA) intltest $(IOTEST) cintltst $(LETEST)
+SUBDIRS = $(TESTDATA) intltest $(IOTEST) cintltst $(LETEST) $(FUZZER)
 
 ## List of phony targets
 .PHONY : everything all all-local all-recursive install install-local          \
@@ -140,6 +142,8 @@ pcheck: $(STATUS_FILES)
        @goods=; \
        bads=; \
        echo "----------------------------------------"; \
+       echo $SUBDIRS \
+       echo "----------------------------------------"; \
        for subdir in $(SUBDIRS); do \
          if [ -s "$(MYSTATUS_R).$$subdir" ]; then \
            echo "-------------" ; \

diff --git a/icu4c/source/test/fuzzer/Makefile.in b/icu4c/source/test/fuzzer/Makefile.in
new file mode 100644 (file)
index 0000000..f56b78d
--- /dev/null
+++ b/icu4c/source/test/fuzzer/Makefile.in
@@ -0,0 +1,99 @@
+# © 2019 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html
+#******************************************************************************
+## Makefile.in for ICU - test/fuzzer
+
+## Source directory information
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+
+top_builddir = ../..
+
+## All the flags and other definitions are included here.
+include $(top_builddir)/icudefs.mk
+
+## Build directory information
+subdir = test/fuzzer
+
+## Extra files to remove for 'make clean'
+CLEANFILES = *~ $(DEPS) $(TESTXML)
+
+## Target information
+TARGET = all_fuzzers
+
+BUILDDIR := $(CURR_SRCCODE_FULL_DIR)/../../
+# Simplify the path for Unix
+BUILDDIR := $(BUILDDIR:test/fuzzer/../../=)
+# Simplify the path for Windows
+BUILDDIR := $(BUILDDIR:test\\fuzzer/../../=)
+# Simplify the path for Windows 98
+BUILDDIR := $(BUILDDIR:TEST\\FUZZER/../../=)
+
+CPPFLAGS += -I$(srcdir) -I$(top_srcdir)/common -I$(top_srcdir)/i18n -I$(top_srcdir)/tools/ctestfw -I$(top_srcdir)/io
+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 collator_compare_fuzzer converter_fuzzer locale_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
+
+DEPS = $(OBJECTS:.o=.d)
+
+-include Makefile.local
+
+## List of phony targets
+.PHONY : all all-local install install-local clean clean-local \
+distclean distclean-local dist dist-local check check-local xcheck     \
+check-exhaustive check-exhaustive-local all_fuzzers
+
+## Clear suffix list
+.SUFFIXES :
+
+## List of standard targets
+all: all-local
+install: install-local
+clean: clean-local
+distclean : distclean-local
+dist: dist-local
+check: all check-local
+xcheck: all xcheck-local
+
+all-local: $(TARGET)
+
+install-local:
+
+dist-local:
+
+clean-local:
+       test -z "$(CLEANFILES)" || $(RMV) $(CLEANFILES)
+       $(RMV) $(OBJECTS) $(TARGET) $(FUZZER_TARGETS)
+
+distclean-local: clean-local
+       $(RMV) Makefile
+
+check-local: all-local
+       $(foreach trgt,$(FUZZER_TARGETS), echo $(trgt); $(INVOKE) ./$(trgt) \
+            $(TEST_OUTPUT_OPTS) || exit \
+            $(IOTEST_OPTS);)
+
+xcheck-local: check-local
+
+Makefile: $(srcdir)/Makefile.in  $(top_builddir)/config.status
+       cd $(top_builddir) \
+        && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
+
+all_fuzzers: $(FUZZER_TARGETS)
+
+%_fuzzer: %_fuzzer.o fuzzer_driver.o locale_util.o
+       $(LINK.cc) $(OUTOPT)$@ $^ $(LIBS)
+
+ifeq (,$(MAKECMDGOALS))
+-include $(DEPS)
+else
+ifneq ($(patsubst %clean,,$(MAKECMDGOALS)),)
+ifneq ($(patsubst %install,,$(MAKECMDGOALS)),)
+-include $(DEPS)
+endif
+endif
+endif

diff --git a/icu4c/source/test/fuzzer/break_iterator_fuzzer.cpp b/icu4c/source/test/fuzzer/break_iterator_fuzzer.cpp
index 73dc29ec148db2cc5e1e46633da6d05e94b2471b..a2c9a3e9b5b02e8573049f8e3fb98df28bde8bc7 100644 (file)
--- a/icu4c/source/test/fuzzer/break_iterator_fuzzer.cpp
+++ b/icu4c/source/test/fuzzer/break_iterator_fuzzer.cpp
@@ -1,6 +1,7 @@
 // © 2019 and later: Unicode, Inc. and others.
 // License & terms of use: http://www.unicode.org/copyright.html
 
+#include <cstring>
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>

diff --git a/icu4c/source/test/fuzzer/converter_fuzzer.cpp b/icu4c/source/test/fuzzer/converter_fuzzer.cpp
index 029f5097be3cb3df0153cf33ab738430a2d1a48b..7d5c13d9222c34c0ae5ce882ced12023b40c0fa6 100644 (file)
--- a/icu4c/source/test/fuzzer/converter_fuzzer.cpp
+++ b/icu4c/source/test/fuzzer/converter_fuzzer.cpp
@@ -6,6 +6,8 @@
 
 #include <algorithm>
 #include <array>
+#include <cstring>
+#include <functional>
 #include <memory>
 #include <vector>
 

diff --git a/icu4c/source/test/fuzzer/fuzzer_driver.cpp b/icu4c/source/test/fuzzer/fuzzer_driver.cpp
new file mode 100644 (file)
index 0000000..820ed85
--- /dev/null
+++ b/icu4c/source/test/fuzzer/fuzzer_driver.cpp
@@ -0,0 +1,20 @@
+// © 2019 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "cmemory.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
+
+int main(int argc, char* argv[])
+{
+  (void) argc;
+  (void) argv;
+  const char *fuzzer_data = "abc123";
+   
+  LLVMFuzzerTestOneInput((const uint8_t *) fuzzer_data, strlen(fuzzer_data));
+
+  return 0;
+}

diff --git a/icu4c/source/test/fuzzer/number_format_fuzzer.cpp b/icu4c/source/test/fuzzer/number_format_fuzzer.cpp
index febc50947980fdf18f9dc06303e1cb718b9290e6..4be2f97a7562b7c14a3c3d449ae1d10056189451 100644 (file)
--- a/icu4c/source/test/fuzzer/number_format_fuzzer.cpp
+++ b/icu4c/source/test/fuzzer/number_format_fuzzer.cpp
@@ -3,8 +3,10 @@
 
 // Fuzzer for NumberFormat::parse.
 
+#include <cstring>
 #include <stddef.h>
 #include <stdint.h>
+#include <string>
 #include <memory>
 #include "fuzzer_utils.h"
 #include "unicode/numfmt.h"

diff --git a/icu4c/source/test/fuzzer/ucasemap_fuzzer.cpp b/icu4c/source/test/fuzzer/ucasemap_fuzzer.cpp
index 896d0ed92bd0e79999eaa885bdcae3aa1a61aa05..ddb03862efbb717e44f181b23b7493a839ecea45 100644 (file)
--- a/icu4c/source/test/fuzzer/ucasemap_fuzzer.cpp
+++ b/icu4c/source/test/fuzzer/ucasemap_fuzzer.cpp
@@ -3,9 +3,11 @@
 
 // Fuzzer for ucasemap.
 
+#include <cstring>
+#include <functional>
+#include <memory>
 #include <stddef.h>
 #include <stdint.h>
-#include <memory>
 #include "fuzzer_utils.h"
 #include "unicode/ucasemap.h"
 

diff --git a/icu4c/source/test/fuzzer/unicode_string_codepage_create_fuzzer.cpp b/icu4c/source/test/fuzzer/unicode_string_codepage_create_fuzzer.cpp
index ed75f351c40d4f70c6be52e8bf1a92d9eb141dc2..d58b879f244d490aa1c6ad9300c37b15a5949b52 100644 (file)
--- a/icu4c/source/test/fuzzer/unicode_string_codepage_create_fuzzer.cpp
+++ b/icu4c/source/test/fuzzer/unicode_string_codepage_create_fuzzer.cpp
@@ -4,6 +4,7 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <cstring>
 #include <algorithm>
 #include <array>
 #include <vector>

diff --git a/icu4c/source/test/fuzzer/uregex_open_fuzzer.cpp b/icu4c/source/test/fuzzer/uregex_open_fuzzer.cpp
index e984e7eeb4341a040451e7c6c38b00e0c5b5f4f5..4cf4ceaf4becbda7c78dc1487825200d83b9ead4 100644 (file)
--- a/icu4c/source/test/fuzzer/uregex_open_fuzzer.cpp
+++ b/icu4c/source/test/fuzzer/uregex_open_fuzzer.cpp
@@ -3,6 +3,8 @@
 
 #include <stddef.h>
 #include <stdint.h>
+#include <string.h>
+
 
 #include "fuzzer_utils.h"
 #include "unicode/regex.h"
@@ -12,11 +14,13 @@ IcuEnvironment* env = new IcuEnvironment();
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   UParseError pe = { 0 };
   UErrorCode status = U_ZERO_ERROR;
+
   URegularExpression* re = uregex_open(reinterpret_cast<const UChar*>(data),
                                        static_cast<int>(size) / sizeof(UChar),
                                        0, &pe, &status);
+
   if (re)
     uregex_close(re);
-
+ 
   return 0;
 }