Replace deprecated C++ includes

2025-01-02 22:50:20 +00:00 · 2023-05-20 12:22:32 +01:00 · 2023-05-20 12:22:32 +01:00 · e28f4efb00
commit e28f4efb00
parent 7f043fe88e
73 changed files with 121 additions and 121 deletions
--- a/examples/pdf-bookmarks.cc
+++ b/examples/pdf-bookmarks.cc
@ -5,8 +5,8 @@
 #include <qpdf/QTC.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 // This program demonstrates extraction of bookmarks using the qpdf
 // outlines API. Note that all the information shown by this program
--- a/examples/pdf-count-strings.cc
+++ b/examples/pdf-count-strings.cc
@ -5,7 +5,7 @@
 //

 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 #include <qpdf/Pl_StdioFile.hh>
 #include <qpdf/QPDF.hh>
--- a/examples/pdf-create.cc
+++ b/examples/pdf-create.cc
@ -16,7 +16,7 @@
 #include <qpdf/QUtil.hh>
 #include <iostream>
 #include <memory>
-#include <stdlib.h>
+#include <cstdlib>

 static char const* whoami = nullptr;

--- a/examples/pdf-double-page-size.cc
+++ b/examples/pdf-double-page-size.cc
@ -5,8 +5,8 @@
 #include <qpdf/QPDFWriter.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 static char const* whoami = nullptr;

--- a/examples/pdf-filter-tokens.cc
+++ b/examples/pdf-filter-tokens.cc
@ -8,7 +8,7 @@
 #include <algorithm>
 #include <deque>
 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 #include <qpdf/QPDF.hh>
 #include <qpdf/QPDFObjectHandle.hh>
--- a/examples/pdf-invert-images.cc
+++ b/examples/pdf-invert-images.cc
@ -6,8 +6,8 @@
 #include <qpdf/QPDFWriter.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 static char const* whoami = nullptr;

--- a/examples/pdf-mod-info.cc
+++ b/examples/pdf-mod-info.cc
@ -6,9 +6,9 @@
 #include <qpdf/QTC.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 static char const* version = "1.1";
 static char const* whoami = nullptr;
--- a/examples/pdf-npages.cc
+++ b/examples/pdf-npages.cc
@ -1,6 +1,6 @@
 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 #include <qpdf/QPDF.hh>
 #include <qpdf/QUtil.hh>
--- a/examples/pdf-overlay-page.cc
+++ b/examples/pdf-overlay-page.cc
@ -4,7 +4,7 @@
 #include <qpdf/QPDFWriter.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 // This program demonstrates use of form XObjects to overlay a page
 // from one file onto all pages of another file. The qpdf program's
--- a/examples/pdf-parse-content.cc
+++ b/examples/pdf-parse-content.cc
@ -1,5 +1,5 @@
 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 #include <qpdf/QIntC.hh>
 #include <qpdf/QPDF.hh>
--- a/examples/pdf-set-form-values.cc
+++ b/examples/pdf-set-form-values.cc
@ -4,7 +4,7 @@
 #include <qpdf/QPDFWriter.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 static char const* whoami = nullptr;

--- a/examples/pdf-split-pages.cc
+++ b/examples/pdf-split-pages.cc
@ -12,7 +12,7 @@

 #include <cstring>
 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>
 #include <string>

 static bool static_id = false;
--- a/include/qpdf/Buffer.hh
+++ b/include/qpdf/Buffer.hh
@ -26,7 +26,7 @@
 #include <qpdf/PointerHolder.hh> // unused -- remove in qpdf 12 (see #785)

 #include <memory>
-#include <stddef.h>
+#include <cstddef>

 class Buffer
 {
--- a/include/qpdf/InputSource.hh
+++ b/include/qpdf/InputSource.hh
@ -27,7 +27,7 @@
 #include <qpdf/Types.h>

 #include <memory>
-#include <stdio.h>
+#include <cstdio>
 #include <string>

 // Remember to use QPDF_DLL_CLASS on anything derived from InputSource
--- a/include/qpdf/Pl_StdioFile.hh
+++ b/include/qpdf/Pl_StdioFile.hh
@ -26,7 +26,7 @@

 #include <qpdf/Pipeline.hh>

-#include <stdio.h>
+#include <cstdio>

 //
 // This pipeline is reusable.
--- a/include/qpdf/QPDF.hh
+++ b/include/qpdf/QPDF.hh
@ -30,7 +30,7 @@
 #include <list>
 #include <map>
 #include <memory>
-#include <stdio.h>
+#include <cstdio>
 #include <string>
 #include <string_view>
 #include <vector>
--- a/include/qpdf/QPDFTokenizer.hh
+++ b/include/qpdf/QPDFTokenizer.hh
@ -28,7 +28,7 @@
 #include <qpdf/PointerHolder.hh> // unused -- remove in qpdf 12 (see #785)

 #include <memory>
-#include <stdio.h>
+#include <cstdio>
 #include <string>

 class QPDFTokenizer
--- a/include/qpdf/QPDFWriter.hh
+++ b/include/qpdf/QPDFWriter.hh
@ -34,7 +34,7 @@
 #include <map>
 #include <memory>
 #include <set>
-#include <stdio.h>
+#include <cstdio>
 #include <string>
 #include <string_view>
 #include <vector>
--- a/include/qpdf/QUtil.hh
+++ b/include/qpdf/QUtil.hh
@ -30,9 +30,9 @@
 #include <list>
 #include <memory>
 #include <stdexcept>
-#include <stdio.h>
+#include <cstdio>
 #include <string>
-#include <time.h>
+#include <ctime>
 #include <vector>

 class RandomDataProvider;
--- a/include/qpdf/RandomDataProvider.hh
+++ b/include/qpdf/RandomDataProvider.hh
@ -23,7 +23,7 @@
 #define RANDOMDATAPROVIDER_HH

 #include <qpdf/DLL.h>
-#include <string.h> // for size_t
+#include <cstring> // for size_t

 class QPDF_DLL_CLASS RandomDataProvider
 {
--- a/libqpdf/BufferInputSource.cc
+++ b/libqpdf/BufferInputSource.cc
@ -3,7 +3,7 @@
 #include <qpdf/QIntC.hh>
 #include <algorithm>
 #include <sstream>
-#include <string.h>
+#include <cstring>

 BufferInputSource::BufferInputSource(
    std::string const& description, Buffer* buf, bool own_memory) :
--- a/libqpdf/FileInputSource.cc
+++ b/libqpdf/FileInputSource.cc
@ -3,7 +3,7 @@
 #include <qpdf/QPDFExc.hh>
 #include <qpdf/QUtil.hh>
 #include <algorithm>
-#include <string.h>
+#include <cstring>

 FileInputSource::FileInputSource() :
    close_file(false),
--- a/libqpdf/InputSource.cc
+++ b/libqpdf/InputSource.cc
@ -3,7 +3,7 @@
 #include <qpdf/QIntC.hh>
 #include <qpdf/QTC.hh>
 #include <stdexcept>
-#include <string.h>
+#include <cstring>

 void
 InputSource::setLastOffset(qpdf_offset_t offset)
--- a/libqpdf/InsecureRandomDataProvider.cc
+++ b/libqpdf/InsecureRandomDataProvider.cc
@ -2,7 +2,7 @@

 #include <qpdf/QUtil.hh>
 #include <qpdf/qpdf-config.h>
-#include <stdlib.h>
+#include <cstdlib>

 InsecureRandomDataProvider::InsecureRandomDataProvider() :
    seeded_random(false)
--- a/libqpdf/MD5.cc
+++ b/libqpdf/MD5.cc
@ -4,7 +4,7 @@
 #include <qpdf/QPDFCryptoProvider.hh>
 #include <qpdf/QUtil.hh>

-#include <string.h>
+#include <cstring>

 MD5::MD5()
 {
--- a/libqpdf/Pl_ASCII85Decoder.cc
+++ b/libqpdf/Pl_ASCII85Decoder.cc
@ -2,7 +2,7 @@

 #include <qpdf/QTC.hh>
 #include <stdexcept>
-#include <string.h>
+#include <cstring>

 Pl_ASCII85Decoder::Pl_ASCII85Decoder(char const* identifier, Pipeline* next) :
    Pipeline(identifier, next),
--- a/libqpdf/Pl_ASCIIHexDecoder.cc
+++ b/libqpdf/Pl_ASCIIHexDecoder.cc
@ -1,7 +1,7 @@
 #include <qpdf/Pl_ASCIIHexDecoder.hh>

 #include <qpdf/QTC.hh>
-#include <ctype.h>
+#include <cctype>
 #include <stdexcept>

 Pl_ASCIIHexDecoder::Pl_ASCIIHexDecoder(char const* identifier, Pipeline* next) :
--- a/libqpdf/Pl_Buffer.cc
+++ b/libqpdf/Pl_Buffer.cc
@ -2,8 +2,8 @@

 #include <algorithm>
 #include <stdexcept>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 Pl_Buffer::Pl_Buffer(char const* identifier, Pipeline* next) :
    Pipeline(identifier, next),
--- a/libqpdf/Pl_DCT.cc
+++ b/libqpdf/Pl_DCT.cc
@ -3,7 +3,7 @@
 #include <qpdf/QIntC.hh>
 #include <qpdf/QTC.hh>

-#include <setjmp.h>
+#include <csetjmp>
 #include <stdexcept>
 #include <string>

--- a/libqpdf/Pl_Flate.cc
+++ b/libqpdf/Pl_Flate.cc
@ -1,7 +1,7 @@
 #include <qpdf/Pl_Flate.hh>

-#include <limits.h>
-#include <string.h>
+#include <climits>
+#include <cstring>
 #include <zlib.h>

 #include <qpdf/QIntC.hh>
--- a/libqpdf/Pl_LZWDecoder.cc
+++ b/libqpdf/Pl_LZWDecoder.cc
@ -4,7 +4,7 @@
 #include <qpdf/QTC.hh>
 #include <qpdf/QUtil.hh>
 #include <stdexcept>
-#include <string.h>
+#include <cstring>

 Pl_LZWDecoder::Pl_LZWDecoder(
    char const* identifier, Pipeline* next, bool early_code_change) :
--- a/libqpdf/Pl_PNGFilter.cc
+++ b/libqpdf/Pl_PNGFilter.cc
@ -3,9 +3,9 @@
 #include <qpdf/QTC.hh>
 #include <qpdf/QUtil.hh>

-#include <limits.h>
+#include <climits>
 #include <stdexcept>
-#include <string.h>
+#include <cstring>

 static int
 abs_diff(int a, int b)
--- a/libqpdf/Pl_StdioFile.cc
+++ b/libqpdf/Pl_StdioFile.cc
@ -3,7 +3,7 @@
 #include <qpdf/Pl_StdioFile.hh>

 #include <qpdf/QUtil.hh>
-#include <errno.h>
+#include <cerrno>
 #include <stdexcept>

 Pl_StdioFile::Members::Members(FILE* f) :
--- a/libqpdf/Pl_TIFFPredictor.cc
+++ b/libqpdf/Pl_TIFFPredictor.cc
@ -5,9 +5,9 @@
 #include <qpdf/QTC.hh>
 #include <qpdf/QUtil.hh>

-#include <limits.h>
+#include <climits>
 #include <stdexcept>
-#include <string.h>
+#include <cstring>
 #include <vector>

 Pl_TIFFPredictor::Pl_TIFFPredictor(
--- a/libqpdf/QPDF.cc
+++ b/libqpdf/QPDF.cc
@ -9,8 +9,8 @@
 #include <memory.h>
 #include <regex>
 #include <sstream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>
 #include <vector>

 #include <qpdf/BufferInputSource.hh>
--- a/libqpdf/QPDFFormFieldObjectHelper.cc
+++ b/libqpdf/QPDFFormFieldObjectHelper.cc
@ -6,7 +6,7 @@
 #include <qpdf/QPDFAnnotationObjectHelper.hh>
 #include <qpdf/QTC.hh>
 #include <qpdf/QUtil.hh>
-#include <stdlib.h>
+#include <cstdlib>

 QPDFFormFieldObjectHelper::QPDFFormFieldObjectHelper(QPDFObjectHandle oh) :
    QPDFObjectHelper(oh),
--- a/libqpdf/QPDFJob.cc
+++ b/libqpdf/QPDFJob.cc
@ -3,7 +3,7 @@
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
-#include <ctype.h>
+#include <cctype>
 #include <fcntl.h>
 #include <iostream>
 #include <memory>
--- a/libqpdf/QPDFJob_argv.cc
+++ b/libqpdf/QPDFJob_argv.cc
@ -3,12 +3,12 @@
 // See "HOW TO ADD A COMMAND-LINE ARGUMENT" in README-maintainer.

 #include <cstdio>
-#include <ctype.h>
+#include <cctype>
 #include <iostream>
 #include <memory>
 #include <sstream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 #include <qpdf/QIntC.hh>
 #include <qpdf/QPDFArgParser.hh>
--- a/libqpdf/QPDFObjectHandle.cc
+++ b/libqpdf/QPDFObjectHandle.cc
@ -30,10 +30,10 @@

 #include <algorithm>
 #include <cstring>
-#include <ctype.h>
-#include <limits.h>
+#include <cctype>
+#include <climits>
 #include <stdexcept>
-#include <stdlib.h>
+#include <cstdlib>

 using namespace std::literals;

--- a/libqpdf/QPDFSystemError.cc
+++ b/libqpdf/QPDFSystemError.cc
@ -1,6 +1,6 @@
 #include <qpdf/QPDFSystemError.hh>

-#include <string.h>
+#include <cstring>

 QPDFSystemError::QPDFSystemError(
    std::string const& description, int system_errno) :
--- a/libqpdf/QPDFTokenizer.cc
+++ b/libqpdf/QPDFTokenizer.cc
@ -11,8 +11,8 @@
 #include <qpdf/QUtil.hh>

 #include <stdexcept>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 static inline bool
 is_delimiter(char ch)
--- a/libqpdf/QPDFWriter.cc
+++ b/libqpdf/QPDFWriter.cc
@ -24,7 +24,7 @@

 #include <algorithm>
 #include <stdexcept>
-#include <stdlib.h>
+#include <cstdlib>

 QPDFWriter::ProgressReporter::~ProgressReporter()
 {
--- a/libqpdf/QPDF_encryption.cc
+++ b/libqpdf/QPDF_encryption.cc
@ -17,7 +17,7 @@
 #include <qpdf/RC4.hh>

 #include <algorithm>
-#include <string.h>
+#include <cstring>

 static unsigned char const padding_string[] = {
    0x28, 0xbf, 0x4e, 0x5e, 0x4e, 0x75, 0x8a, 0x41, 0x64, 0x00, 0x4e,
--- a/libqpdf/QPDF_linearization.cc
+++ b/libqpdf/QPDF_linearization.cc
@ -13,8 +13,8 @@
 #include <qpdf/QUtil.hh>

 #include <algorithm>
-#include <math.h>
-#include <string.h>
+#include <cmath>
+#include <cstring>

 template <class T, class int_type>
 static void
--- a/libqpdf/QTC.cc
+++ b/libqpdf/QTC.cc
@ -3,7 +3,7 @@
 #include <qpdf/QUtil.hh>
 #include <map>
 #include <set>
-#include <stdio.h>
+#include <cstdio>

 static bool
 tc_active(char const* const scope)
--- a/libqpdf/QUtil.cc
+++ b/libqpdf/QUtil.cc
@ -9,8 +9,8 @@
 #include <qpdf/QPDFSystemError.hh>
 #include <qpdf/QTC.hh>

-#include <ctype.h>
-#include <errno.h>
+#include <cctype>
+#include <cerrno>
 #include <fcntl.h>
 #include <fstream>
 #include <iomanip>
@ -21,9 +21,9 @@
 #include <set>
 #include <sstream>
 #include <stdexcept>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
 #ifndef QPDF_NO_WCHAR_T
 # include <cwchar>
 #endif
--- a/libqpdf/qpdf/BitStream.hh
+++ b/libqpdf/qpdf/BitStream.hh
@ -3,7 +3,7 @@
 #ifndef BITSTREAM_HH
 #define BITSTREAM_HH

-#include <stddef.h>
+#include <cstddef>

 class BitStream
 {
--- a/libqpdf/qpdf/BitWriter.hh
+++ b/libqpdf/qpdf/BitWriter.hh
@ -3,7 +3,7 @@
 #ifndef BITWRITER_HH
 #define BITWRITER_HH

-#include <stddef.h>
+#include <cstddef>

 class Pipeline;

--- a/libtests/aes.cc
+++ b/libtests/aes.cc
@ -4,9 +4,9 @@
 #include <qpdf/QUtil.hh>

 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 static void
 usage()
--- a/libtests/ascii85.cc
+++ b/libtests/ascii85.cc
@ -2,7 +2,7 @@

 #include <qpdf/Pl_StdioFile.hh>
 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 int
 main()
--- a/libtests/bits.cc
+++ b/libtests/bits.cc
@ -4,7 +4,7 @@
 #include <qpdf/QIntC.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 // See comments in bits_functions.hh
 #define BITS_TESTING 1
--- a/libtests/buffer.cc
+++ b/libtests/buffer.cc
@ -7,7 +7,7 @@
 #include <cstring>
 #include <iostream>
 #include <stdexcept>
-#include <stdlib.h>
+#include <cstdlib>

 static unsigned char*
 uc(char const* s)
--- a/libtests/closed_file_input_source.cc
+++ b/libtests/closed_file_input_source.cc
@ -2,7 +2,7 @@
 #include <qpdf/FileInputSource.hh>

 #include <iostream>
-#include <stdio.h>
+#include <cstdio>

 void
 check(std::string const& what, bool result)
--- a/libtests/dct_compress.cc
+++ b/libtests/dct_compress.cc
@ -3,9 +3,9 @@
 #include <qpdf/QUtil.hh>

 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 static void
 usage()
--- a/libtests/dct_uncompress.cc
+++ b/libtests/dct_uncompress.cc
@ -3,8 +3,8 @@
 #include <qpdf/QUtil.hh>

 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
+#include <cstdio>
+#include <cstdlib>

 int
 main(int argc, char* argv[])
--- a/libtests/flate.cc
+++ b/libtests/flate.cc
@ -5,7 +5,7 @@
 #include <qpdf/QUtil.hh>

 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 void
 run(char const* filename)
--- a/libtests/hex.cc
+++ b/libtests/hex.cc
@ -2,7 +2,7 @@

 #include <qpdf/Pl_StdioFile.hh>
 #include <iostream>
-#include <stdlib.h>
+#include <cstdlib>

 int
 main()
--- a/libtests/lzw.cc
+++ b/libtests/lzw.cc
@ -3,8 +3,8 @@
 #include <qpdf/Pl_StdioFile.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 int
 main(int argc, char* argv[])
--- a/libtests/md5.cc
+++ b/libtests/md5.cc
@ -3,7 +3,7 @@
 #include <qpdf/Pl_MD5.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdio.h>
+#include <cstdio>

 static void
 test_string(char const* str)
--- a/libtests/predictors.cc
+++ b/libtests/predictors.cc
@ -7,8 +7,8 @@
 #include <qpdf/QUtil.hh>

 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 void
 run(char const* filename,
--- a/libtests/qintc.cc
+++ b/libtests/qintc.cc
@ -1,7 +1,7 @@
 #include <qpdf/assert_test.h>

 #include <qpdf/QIntC.hh>
-#include <stdint.h>
+#include <cstdint>

 #define try_convert(exp_pass, fn, i) \
    try_convert_real(#fn "(" #i ")", exp_pass, fn, i)
--- a/libtests/qutil.cc
+++ b/libtests/qutil.cc
@ -5,9 +5,9 @@
 #include <qpdf/QUtil.hh>
 #include <fstream>
 #include <iostream>
-#include <limits.h>
-#include <stdio.h>
-#include <string.h>
+#include <climits>
+#include <cstdio>
+#include <cstring>

 #ifdef _WIN32
 # include <io.h>
--- a/libtests/rc4.cc
+++ b/libtests/rc4.cc
@ -6,9 +6,9 @@
 #include <qpdf/QUtil.hh>

 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 static void
 other_tests()
--- a/libtests/runlength.cc
+++ b/libtests/runlength.cc
@ -3,9 +3,9 @@
 #include <qpdf/QUtil.hh>

 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 int
 main(int argc, char* argv[])
--- a/libtests/sha2.cc
+++ b/libtests/sha2.cc
@ -1,7 +1,7 @@
 #include <qpdf/Pl_SHA2.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <string.h>
+#include <cstring>

 static void
 test(
--- a/qpdf/pdf_from_scratch.cc
+++ b/qpdf/pdf_from_scratch.cc
@ -5,9 +5,9 @@
 #include <qpdf/QPDFWriter.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 static char const* whoami = 0;

--- a/qpdf/test_driver.cc
+++ b/qpdf/test_driver.cc
@ -27,12 +27,12 @@
 #include <qpdf/QTC.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <limits.h>
+#include <climits>
 #include <map>
 #include <sstream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 #define QPDF_OBJECT_NOWARN
 #include <qpdf/QPDFObject.hh>
--- a/qpdf/test_large_file.cc
+++ b/qpdf/test_large_file.cc
@ -13,8 +13,8 @@
 #include <qpdf/QPDFWriter.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 // Run "test_large_file write small a.pdf" to get a PDF file that you
 // can look at in a reader.
--- a/qpdf/test_pdf_doc_encoding.cc
+++ b/qpdf/test_pdf_doc_encoding.cc
@ -1,8 +1,8 @@
 #include <qpdf/QPDFObjectHandle.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 static char const* whoami = 0;

--- a/qpdf/test_pdf_unicode.cc
+++ b/qpdf/test_pdf_unicode.cc
@ -1,8 +1,8 @@
 #include <qpdf/QPDFObjectHandle.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdlib>
+#include <cstring>

 static char const* whoami = 0;

--- a/qpdf/test_tokenizer.cc
+++ b/qpdf/test_tokenizer.cc
@ -7,9 +7,9 @@
 #include <qpdf/QPDFTokenizer.hh>
 #include <qpdf/QUtil.hh>
 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 static char const* whoami = 0;

--- a/qpdf/test_unicode_filenames.cc
+++ b/qpdf/test_unicode_filenames.cc
@ -6,8 +6,8 @@
 #endif

 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
+#include <cstdio>
+#include <cstdlib>

 static void
 do_copy(FILE* in, FILE* out)
--- a/zlib-flate/zlib-flate.cc
+++ b/zlib-flate/zlib-flate.cc
@ -5,9 +5,9 @@

 #include <fcntl.h>
 #include <iostream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>

 static char const* whoami = 0;