For one, CppunitTest_sw_ooxmlexport6 failed under
-fsanitize=implicit-signed-integer-truncation when passing a negative
ShadowFormat.ShadowWidth into a sal_uInt16 SvxShadowItem (see below).

Fixing the mapping from VML shadow to ShadowFormat in
ShadowModel::pushToPropMap caused ShadowModel::pushToPropMap to fail again,
however, testing against 57811035 in testOuterShdw
(sw/qa/extras/ooxmlexport/ooxmlexport6.cxx).
fa9d574a "Code changes for fdo#74107:File
Corruption - Issue with outerShdw" doesn't explain how that value came about, so
assume that it was just whatever value happened to be observed in LO at that
time, and now adjust it accordingly.  And, for another, opening
sw/qa/extras/ooxmlexport/data/testOuterShdw.docx in LO now produces a green bar
with red shadow at the top of the first page that better resembles the original.

> editeng/source/items/frmitems.cxx:1154:18: runtime error: implicit conversion from type 'long' of value -1160 (64-bit, signed) to type 'sal_uInt16' (aka 'unsigned short') changed the value to 64376 (16-bit, unsigned)
>  #0 in SvxShadowItem::PutValue(com::sun::star::uno::Any const&, unsigned char) at editeng/source/items/frmitems.cxx:1154:18 (instdir/program/libeditenglo.so +0x16716ea)
>  #1 in BaseFrameProperties_Impl::FillBaseProperties(SfxItemSet&, SfxItemSet const&, bool&) at sw/source/core/unocore/unoframe.cxx:759:48 (instdir/program/libswlo.so +0xba32230)
>  #2 in SwFrameProperties_Impl::AnyToItemSet(SwDoc*, SfxItemSet&, SfxItemSet&, bool&) at sw/source/core/unocore/unoframe.cxx:1004:19 (instdir/program/libswlo.so +0xba3cbb9)
>  #3 in SwXFrame::attachToRange(com::sun::star::uno::Reference<com::sun::star::text::XTextRange> const&) at sw/source/core/unocore/unoframe.cxx:2665:20 (instdir/program/libswlo.so +0xba78d71)
>  #4 in SwXFrame::attach(com::sun::star::uno::Reference<com::sun::star::text::XTextRange> const&) at sw/source/core/unocore/unoframe.cxx:3003:9 (instdir/program/libswlo.so +0xba877fa)
>  #5 in SwXTextFrame::attach(com::sun::star::uno::Reference<com::sun::star::text::XTextRange> const&) at sw/source/core/unocore/unoframe.cxx:3242:15 (instdir/program/libswlo.so +0xba926a2)
>  #6 in SwXText::insertTextContent(com::sun::star::uno::Reference<com::sun::star::text::XTextRange> const&, com::sun::star::uno::Reference<com::sun::star::text::XTextContent> const&, unsigned char) at sw/source/core/unocore/unotext.cxx:619:15 (instdir/program/libswlo.so +0xc2dc17f)
>  #7 in writerfilter::dmapper::DomainMapper_Impl::PushShapeContext(com::sun::star::uno::Reference<com::sun::star::drawing::XShape> const&) at writerfilter/source/dmapper/DomainMapper_Impl.cxx:2330:30 (instdir/program/libwriterfilterlo.so +0x14d2953)
>  #8 in writerfilter::dmapper::DomainMapper::lcl_startShape(com::sun::star::uno::Reference<com::sun::star::drawing::XShape> const&) at writerfilter/source/dmapper/DomainMapper.cxx:2964:18 (instdir/program/libwriterfilterlo.so +0x132c46f)
>  #9 in writerfilter::LoggedStream::startShape(com::sun::star::uno::Reference<com::sun::star::drawing::XShape> const&) at writerfilter/source/dmapper/LoggedResources.cxx:151:5 (instdir/program/libwriterfilterlo.so +0x1763e70)
>  #10 in writerfilter::ooxml::OOXMLFastContextHandlerShape::sendShape(int) at writerfilter/source/ooxml/OOXMLFastContextHandler.cxx:1678:27 (instdir/program/libwriterfilterlo.so +0x1ad7fba)
>  #11 in writerfilter::ooxml::OOXMLFastContextHandlerWrapper::lcl_createFastChildContext(int, com::sun::star::uno::Reference<com::sun::star::xml::sax::XFastAttributeList> const&) at writerfilter/source/ooxml/OOXMLFastContextHandler.cxx:1917:63 (instdir/program/libwriterfilterlo.so +0x1ae026e)
>  #12 in writerfilter::ooxml::OOXMLFastContextHandler::createFastChildContext(int, com::sun::star::uno::Reference<com::sun::star::xml::sax::XFastAttributeList> const&) at writerfilter/source/ooxml/OOXMLFastContextHandler.cxx:208:21 (instdir/program/libwriterfilterlo.so +0x1aa90d7)
>  #13 in non-virtual thunk to writerfilter::ooxml::OOXMLFastContextHandler::createFastChildContext(int, com::sun::star::uno::Reference<com::sun::star::xml::sax::XFastAttributeList> const&) at writerfilter/source/ooxml/OOXMLFastContextHandler.cxx (instdir/program/libwriterfilterlo.so +0x1aa9378)
>  #14 in (anonymous namespace)::Entity::startElement((anonymous namespace)::Event const*) at sax/source/fastparser/fastparser.cxx:439:44 (instdir/program/libexpwraplo.so +0x24df4c)
>  #15 in sax_fastparser::FastSaxParserImpl::callbackStartElement(unsigned char const*, unsigned char const*, unsigned char const*, int, unsigned char const**, int, unsigned char const**) at sax/source/fastparser/fastparser.cxx:1254:21 (instdir/program/libexpwraplo.so +0x249499)
>  #16 in (anonymous namespace)::call_callbackStartElement(void*, unsigned char const*, unsigned char const*, unsigned char const*, int, unsigned char const**, int, int, unsigned char const**) at sax/source/fastparser/fastparser.cxx:310:18 (instdir/program/libexpwraplo.so +0x240fee)
>  #17 in xmlParseStartTag2 at workdir/UnpackedTarball/libxml2/parser.c:9583:6 (instdir/program/libxml2.so.2 +0x6f9027)
>  #18 in xmlParseTryOrFinish at workdir/UnpackedTarball/libxml2/parser.c:11342:14 (instdir/program/libxml2.so.2 +0x7300dc)
>  #19 in xmlParseChunk__internal_alias at workdir/UnpackedTarball/libxml2/parser.c:12244:13 (instdir/program/libxml2.so.2 +0x72426a)
>  #20 in sax_fastparser::FastSaxParserImpl::parse() at sax/source/fastparser/fastparser.cxx:1081:25 (instdir/program/libexpwraplo.so +0x23e8e7)
>  #21 in sax_fastparser::FastSaxParserImpl::parseStream(com::sun::star::xml::sax::InputSource const&) at sax/source/fastparser/fastparser.cxx:870:9 (instdir/program/libexpwraplo.so +0x237c3b)
>  #22 in sax_fastparser::FastSaxParser::parseStream(com::sun::star::xml::sax::InputSource const&) at sax/source/fastparser/fastparser.cxx:1377:13 (instdir/program/libexpwraplo.so +0x2528eb)
>  #23 in writerfilter::ooxml::OOXMLDocumentImpl::resolve(writerfilter::Stream&) at writerfilter/source/ooxml/OOXMLDocumentImpl.cxx:503:22 (instdir/program/libwriterfilterlo.so +0x1a6a8d7)
>  #24 in WriterFilter::filter(com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> const&) at writerfilter/source/filter/WriterFilter.cxx:186:24 (instdir/program/libwriterfilterlo.so +0x1a272bb)
>  #25 in SfxObjectShell::ImportFrom(SfxMedium&, com::sun::star::uno::Reference<com::sun::star::text::XTextRange> const&) at sfx2/source/doc/objstor.cxx:2251:34 (instdir/program/libsfxlo.so +0x38d811f)
>  #26 in SfxObjectShell::DoLoad(SfxMedium*) at sfx2/source/doc/objstor.cxx:772:23 (instdir/program/libsfxlo.so +0x38a1299)
>  #27 in SfxBaseModel::load(com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> const&) at sfx2/source/doc/sfxbasemodel.cxx:1795:36 (instdir/program/libsfxlo.so +0x3a4372e)
>  #28 in (anonymous namespace)::SfxFrameLoader_Impl::load(com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> const&, com::sun::star::uno::Reference<com::sun::star::frame::XFrame> const&) at sfx2/source/view/frmload.cxx:688:28 (instdir/program/libsfxlo.so +0x40c49f0)
>  #29 in framework::LoadEnv::impl_loadContent() at framework/source/loadenv/loadenv.cxx:1149:37 (instdir/program/libfwklo.so +0x15212f1)
>  #30 in framework::LoadEnv::startLoading() at framework/source/loadenv/loadenv.cxx:383:20 (instdir/program/libfwklo.so +0x1511cd6)
>  #31 in framework::LoadEnv::loadComponentFromURL(com::sun::star::uno::Reference<com::sun::star::frame::XComponentLoader> const&, com::sun::star::uno::Reference<com::sun::star::uno::XComponentContext> const&, rtl::OUString const&, rtl::OUString const&, int, com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> const&) at framework/source/loadenv/loadenv.cxx:169:14 (instdir/program/libfwklo.so +0x150d988)
>  #32 in framework::Desktop::loadComponentFromURL(rtl::OUString const&, rtl::OUString const&, int, com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> const&) at framework/source/services/desktop.cxx:619:12 (instdir/program/libfwklo.so +0x16705ce)
>  #33 in non-virtual thunk to framework::Desktop::loadComponentFromURL(rtl::OUString const&, rtl::OUString const&, int, com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> const&) at framework/source/services/desktop.cxx (instdir/program/libfwklo.so +0x16707da)
>  #34 in unotest::MacrosTest::loadFromDesktop(rtl::OUString const&, rtl::OUString const&, com::sun::star::uno::Sequence<com::sun::star::beans::PropertyValue> const&) at unotest/source/cpp/macros_test.cxx:50:60 (workdir/LinkTarget/CppunitTest/../Library/libunotest.so +0x8f1f6)
>  #35 in SwModelTestBase::loadURL(rtl::OUString const&, char const*, char const*) at sw/qa/extras/inc/swmodeltestbase.hxx:762:23 (workdir/LinkTarget/CppunitTest/libtest_sw_ooxmlexport6.so +0x2460b1)
>  #36 in SwModelTestBase::load(rtl::OUString const&, char const*, char const*) at sw/qa/extras/inc/swmodeltestbase.hxx:717:16 (workdir/LinkTarget/CppunitTest/libtest_sw_ooxmlexport6.so +0x2449d6)
>  #37 in SwModelTestBase::executeImportTest(char const*, char const*) at sw/qa/extras/inc/swmodeltestbase.hxx:264:13 (workdir/LinkTarget/CppunitTest/libtest_sw_ooxmlexport6.so +0x2440bf)
>  #38 in testOuterShdw::Import() at sw/qa/extras/ooxmlexport/ooxmlexport6.cxx:924:1 (workdir/LinkTarget/CppunitTest/libtest_sw_ooxmlexport6.so +0x33cf2d)
[...]

Change-Id: Ib26db2f175192c8756f825128fc5b852fcc24abf
Reviewed-on: https://gerrit.libreoffice.org/63355
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>