When compiling with Emscripten 3.1.6, the symptom was:
> [..]
> /usr/bin/emcc @CMakeFiles/expat.dir/includes_C.rsp -fno-strict-aliasing -fvisibility=hidden -std=c99 -MD -MT CMakeFiles/expat.dir/lib/xmlparse.c.o -MF CMakeFiles/expat.dir/lib/xmlparse.c.o.d -o CMakeFiles/expat.dir/lib/xmlparse.c.o -c /libexpat/expat/lib/xmlparse.c
> /libexpat/expat/lib/xmlparse.c:8132:11: warning: format specifies type 'int' but the argument has type 'ptrdiff_t' (aka 'long') [-Wformat]
> bytesMore, (account == XML_ACCOUNT_DIRECT) ? "DIR" : "EXP",
> ^~~~~~~~~
> 1 warning generated.
> [..]
> /usr/bin/emcc -DXML_TESTING @CMakeFiles/runtests.dir/includes_C.rsp -fno-strict-aliasing -fvisibility=hidden -std=c99 -MD -MT CMakeFiles/runtests.dir/tests/acc_tests.c.o -MF CMakeFiles/runtests.dir/tests/acc_tests.c.o.d -o CMakeFiles/runtests.dir/tests/acc_tests.c.o -c /libexpat/expat/tests/acc_tests.c
> /libexpat/expat/tests/acc_tests.c:279:11: warning: format specifies type 'unsigned int' but the argument has type 'unsigned long' [-Wformat]
> u + 1, countCases, expectedCountBytesDirect, actualCountBytesDirect);
> ^~~~~
> /libexpat/expat/tests/acc_tests.c:279:18: warning: format specifies type 'unsigned int' but the argument has type 'size_t' (aka 'unsigned long') [-Wformat]
> u + 1, countCases, expectedCountBytesDirect, actualCountBytesDirect);
> ^~~~~~~~~~
> /libexpat/expat/tests/acc_tests.c:288:11: warning: format specifies type 'unsigned int' but the argument has type 'unsigned long' [-Wformat]
> u + 1, countCases, expectedCountBytesIndirect,
> ^~~~~
> /libexpat/expat/tests/acc_tests.c:288:18: warning: format specifies type 'unsigned int' but the argument has type 'size_t' (aka 'unsigned long') [-Wformat]
> u + 1, countCases, expectedCountBytesIndirect,
> ^~~~~~~~~~
> 4 warnings generated.
> [..]
> /usr/bin/emcc -DXML_TESTING @CMakeFiles/runtests.dir/includes_C.rsp -fno-strict-aliasing -fvisibility=hidden -std=c99 -MD -MT CMakeFiles/runtests.dir/lib/xmlparse.c.o -MF CMakeFiles/runtests.dir/lib/xmlparse.c.o.d -o CMakeFiles/runtests.dir/lib/xmlparse.c.o -c /libexpat/expat/lib/xmlparse.c
> /libexpat/expat/lib/xmlparse.c:8132:11: warning: format specifies type 'int' but the argument has type 'ptrdiff_t' (aka 'long') [-Wformat]
> bytesMore, (account == XML_ACCOUNT_DIRECT) ? "DIR" : "EXP",
> ^~~~~~~~~
> 1 warning generated.
> [..]
> /usr/bin/em++ -DXML_TESTING @CMakeFiles/runtests_cxx.dir/includes_CXX.rsp -fno-strict-aliasing -fvisibility=hidden -std=c++11 -MD -MT CMakeFiles/runtests_cxx.dir/tests/acc_tests_cxx.cpp.o -MF CMakeFiles/runtests_cxx.dir/tests/acc_tests_cxx.cpp.o.d -o CMakeFiles/runtests_cxx.dir/tests/acc_tests_cxx.cpp.o -c /libexpat/expat/tests/acc_tests_cxx.cpp
> In file included from /libexpat/expat/tests/acc_tests_cxx.cpp:32:
> /libexpat/expat/tests/acc_tests.c:279:11: warning: format specifies type 'unsigned int' but the argument has type 'unsigned long' [-Wformat]
> u + 1, countCases, expectedCountBytesDirect, actualCountBytesDirect);
> ^~~~~
> /libexpat/expat/tests/acc_tests.c:279:18: warning: format specifies type 'unsigned int' but the argument has type 'size_t' (aka 'unsigned long') [-Wformat]
> u + 1, countCases, expectedCountBytesDirect, actualCountBytesDirect);
> ^~~~~~~~~~
> /libexpat/expat/tests/acc_tests.c:288:11: warning: format specifies type 'unsigned int' but the argument has type 'unsigned long' [-Wformat]
> u + 1, countCases, expectedCountBytesIndirect,
> ^~~~~
> /libexpat/expat/tests/acc_tests.c:288:18: warning: format specifies type 'unsigned int' but the argument has type 'size_t' (aka 'unsigned long') [-Wformat]
> u + 1, countCases, expectedCountBytesIndirect,
> ^~~~~~~~~~
> 4 warnings generated.
> [..]
> /usr/bin/emcc -DXML_TESTING @CMakeFiles/runtests_cxx.dir/includes_C.rsp -fno-strict-aliasing -fvisibility=hidden -std=c99 -MD -MT CMakeFiles/runtests_cxx.dir/lib/xmlparse.c.o -MF CMakeFiles/runtests_cxx.dir/lib/xmlparse.c.o.d -o CMakeFiles/runtests_cxx.dir/lib/xmlparse.c.o -c /libexpat/expat/lib/xmlparse.c
> /libexpat/expat/lib/xmlparse.c:8132:11: warning: format specifies type 'int' but the argument has type 'ptrdiff_t' (aka 'long') [-Wformat]
> bytesMore, (account == XML_ACCOUNT_DIRECT) ? "DIR" : "EXP",
> ^~~~~~~~~
> 1 warning generated.
The bypass works on the assumption that the application uses a
consistent fill size. Let's make some assertions about what should
happen when the application doesn't do that -- most importantly,
that parsing does happen eventually, and that the number of scanned
bytes doesn't explode.
If we always run with the heuristic enabled, it may hide some bugs by
grouping up input into bigger parse attempts.
CI-fighting-assistance-by: Sebastian Pipping <sebastian@pipping.org>
Failing tests are:
[-] UTF-8 case 3: Expected movement by -1 chars, actually moved by 0 chars: "\xdf"
[-] UTF-8 case 4: Expected movement by 0 chars, actually moved by -1 chars: "\xdf\xbf"
[-] UTF-8 case 5: Expected movement by -1 chars, actually moved by 0 chars: "\xef"
[-] UTF-8 case 6: Expected movement by -2 chars, actually moved by -1 chars: "\xef\xbf"
[-] UTF-8 case 7: Expected movement by 0 chars, actually moved by -2 chars: "\xef\xbf\xbf"
[-] UTF-8 case 8: Expected movement by -1 chars, actually moved by 0 chars: "\xf7"
[-] UTF-8 case 9: Expected movement by -2 chars, actually moved by -1 chars: "\xf7\xbf"
[-] UTF-8 case 10: Expected movement by -3 chars, actually moved by -2 chars: "\xf7\xbf\xbf"
[-] UTF-8 case 11: Expected movement by 0 chars, actually moved by -3 chars: "\xf7\xbf\xbf\xbf"
See bug #765227.
* lib/internal.h:
(FASTCALL, PTRFASTCALL): only define these macros for the GNU C compiler
on i386 platforms. apprently, they do not work well on PPC ports.
