fix data races in cclass_Unicode

WARNING: ThreadSanitizer: data race (pid=1220516)
Write of size 4 at 0x7b1c00035510 by thread T19 (mutexes: write M0):
i18npool::Transliteration_casemapping::setMappingType(MappingType,
com::sun::star::lang::Locale const&) :? (libi18npoollo.so+0xe5685)
i18npool::cclass_Unicode::toUpper(rtl::OUString const&, int, int,
com::sun::star::lang::Locale const&) :? (libi18npoollo.so+0x792fa)
i18npool::CharacterClassificationImpl::toUpper(rtl::OUString const&,
int, int, com::sun::star::lang::Locale const&) :?
(libi18npoollo.so+0x83855)
(libutllo.so+0xc6f42)
(libsvllo.so+0xc5823)
const&) ??:? (libsclo.so+0x4978f3)
const&, std::shared_ptr<oox::xls::RichString> const&) :?
(libscfiltlo.so+0x46b354)
const&, int) :? (libscfiltlo.so+0x46b44a)
(libscfiltlo.so+0x4764a0)
:? (libscfiltlo.so+0x4764e9)
oox::core::ContextHandler2::endFastElement(int) ??:?
(libooxlo.so+0x1a10eb)
(libexpwraplo.so+0x2fbdf)
(libexpwraplo.so+0x2fb21)
char const*, unsigned char const*, unsigned char const*)
fastparser.cxx:? (libexpwraplo.so+0x2c255)
/build/libxml2-vTtzwD/libxml2-2.9.12+dfsg/builddir/main/../../parser.c:9736
(libxml2.so.2+0x5751a) (BuildId:
baaa02c136f3351b1c499bbbbe94450b9b9c0d4e)
/build/libxml2-vTtzwD/libxml2-2.9.12+dfsg/builddir/main/../../parser.c:9691
(libxml2.so.2+0x5751a)
sax_fastparser::FastSaxParserImpl::parseStream(com::sun::star::xml::sax::InputSource
const&) :? (libexpwraplo.so+0x2972d)
sax_fastparser::FastSaxParser::parseStream(com::sun::star::xml::sax::InputSource
const&) ??:? (libexpwraplo.so+0x30e88)
oox::core::FastParser::parseStream(com::sun::star::xml::sax::InputSource
const&, bool) ??:? (libooxlo.so+0x1a3220)
oox::core::FastParser::parseStream(com::sun::star::uno::Reference<com::sun::star::io::XInputStream>
const&, rtl::OUString const&) ??:? (libooxlo.so+0x1a3467)
oox::core::XmlFilterBase::importFragment(rtl::Reference<oox::core::FragmentHandler>
const&, oox::core::FastParser&) ??:? (libooxlo.so+0x1c46c1)
oox::xls::WorkbookHelper::importOoxFragment(rtl::Reference<oox::core::FragmentHandler>
const&, oox::core::FastParser&) :? (libscfiltlo.so+0x4be642)
workbookfragment.cxx:? (libscfiltlo.so+0x4b618d)
(libcomphelper.so+0x15e63b)
(libuno_salhelpergcc3.so.3+0x5257)
#25 threadFunc :? (libuno_salhelpergcc3.so.3+0x550e)
(libuno_sal.so.3+0x67e25)

Previous write of size 4 at 0x7b1c00035510 by thread T18 (mutexes:
write M1):
i18npool::Transliteration_casemapping::setMappingType(MappingType,
com::sun::star::lang::Locale const&) :? (libi18npoollo.so+0xe5685)
i18npool::cclass_Unicode::toUpper(rtl::OUString const&, int, int,
com::sun::star::lang::Locale const&) :? (libi18npoollo.so+0x792fa)
i18npool::CharacterClassificationImpl::toUpper(rtl::OUString const&,
int, int, com::sun::star::lang::Locale const&) :?
(libi18npoollo.so+0x83855)
(libutllo.so+0xc6f42)
(libsvllo.so+0xc5823)
const&) ??:? (libsclo.so+0x4978f3)
const&, std::shared_ptr<oox::xls::RichString> const&) :?
(libscfiltlo.so+0x46b354)
const&, int) :? (libscfiltlo.so+0x46b44a)
(libscfiltlo.so+0x4764a0)
:? (libscfiltlo.so+0x4764e9)
oox::core::ContextHandler2::endFastElement(int) ??:?
(libooxlo.so+0x1a10eb)
(libexpwraplo.so+0x2fbdf)
(libexpwraplo.so+0x2fb21)
char const*, unsigned char const*, unsigned char const*)
fastparser.cxx:? (libexpwraplo.so+0x2c255)
/build/libxml2-vTtzwD/libxml2-2.9.12+dfsg/builddir/main/../../parser.c:9736
(libxml2.so.2+0x5751a) (BuildId:
baaa02c136f3351b1c499bbbbe94450b9b9c0d4e)
/build/libxml2-vTtzwD/libxml2-2.9.12+dfsg/builddir/main/../../parser.c:9691
(libxml2.so.2+0x5751a)
sax_fastparser::FastSaxParserImpl::parseStream(com::sun::star::xml::sax::InputSource
const&) :? (libexpwraplo.so+0x2972d)
sax_fastparser::FastSaxParser::parseStream(com::sun::star::xml::sax::InputSource
const&) ??:? (libexpwraplo.so+0x30e88)
oox::core::FastParser::parseStream(com::sun::star::xml::sax::InputSource
const&, bool) ??:? (libooxlo.so+0x1a3220)
oox::core::FastParser::parseStream(com::sun::star::uno::Reference<com::sun::star::io::XInputStream>
const&, rtl::OUString const&) ??:? (libooxlo.so+0x1a3467)
oox::core::XmlFilterBase::importFragment(rtl::Reference<oox::core::FragmentHandler>
const&, oox::core::FastParser&) ??:? (libooxlo.so+0x1c46c1)
oox::xls::WorkbookHelper::importOoxFragment(rtl::Reference<oox::core::FragmentHandler>
const&, oox::core::FastParser&) :? (libscfiltlo.so+0x4be642)
workbookfragment.cxx:? (libscfiltlo.so+0x4b618d)
(libcomphelper.so+0x15e63b)
(libuno_salhelpergcc3.so.3+0x5257)
#25 threadFunc :? (libuno_salhelpergcc3.so.3+0x550e)
(libuno_sal.so.3+0x67e25)

Change-Id: Idf8d9c307c09bc1af8541178331af23d146da927
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/130787
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

4 files changed, 12 insertions, 13 deletions

diff --git a/i18npool/inc/cclass_unicode.hxx b/i18npool/inc/cclass_unicode.hxx
index 4ae4f5fd362e..3cfa1475a063 100644
--- a/i18npool/inc/cclass_unicode.hxx
+++ b/i18npool/inc/cclass_unicode.hxx
@@ -134,7 +134,6 @@ private:
     std::unique_ptr<ParserFlags[]> pCont;
     sal_Int32            nStartTypes;
     sal_Int32            nContTypes;
-    ScanState            eState;
     sal_Unicode          cGroupSep;
     sal_Unicode          cDecimalSep;
     sal_Unicode          cDecimalSepAlt;
@@ -143,10 +142,10 @@ private:
     static sal_Int32 getParseTokensType(sal_uInt32 c, bool isFirst);
 
     /// Access parser table flags.
-    ParserFlags getFlags(sal_uInt32 c);
+    ParserFlags getFlags(sal_uInt32 c, ScanState eState);
 
     /// Access parser flags via International and special definitions.
-    ParserFlags getFlagsExtended(sal_uInt32 c) const;
+    ParserFlags getFlagsExtended(sal_uInt32 c, ScanState eState) const;
 
     /// Access parser table flags for user defined start characters.
     ParserFlags getStartCharsFlags( sal_uInt32 c );
diff --git a/i18npool/source/characterclassification/cclass_unicode.cxx b/i18npool/source/characterclassification/cclass_unicode.cxx
index 2eb3fdf5f27d..45f222c60f6f 100644
--- a/i18npool/source/characterclassification/cclass_unicode.cxx
+++ b/i18npool/source/characterclassification/cclass_unicode.cxx
@@ -43,7 +43,6 @@ cclass_Unicode::cclass_Unicode( const uno::Reference < XComponentContext >& rxCo
         m_xContext( rxContext ),
         nStartTypes( 0 ),
         nContTypes( 0 ),
-        eState( ssGetChar ),
         cGroupSep( ',' ),
         cDecimalSep( '.' ),
         cDecimalSepAlt( 0 )
diff --git a/i18npool/source/characterclassification/cclass_unicode_parser.cxx b/i18npool/source/characterclassification/cclass_unicode_parser.cxx
index 59f10339b5d3..313e42a0f2fe 100644
--- a/i18npool/source/characterclassification/cclass_unicode_parser.cxx
+++ b/i18npool/source/characterclassification/cclass_unicode_parser.cxx
@@ -557,13 +557,13 @@ void cclass_Unicode::destroyParserTable()
 }
 
 
-ParserFlags cclass_Unicode::getFlags(sal_uInt32 const c)
+ParserFlags cclass_Unicode::getFlags(sal_uInt32 const c, const cclass_Unicode::ScanState eState)
 {
     ParserFlags nMask;
     if ( c < nDefCnt )
         nMask = pTable[ sal_uInt8(c) ];
     else
-        nMask = getFlagsExtended(c);
+        nMask = getFlagsExtended(c, eState);
     switch ( eState )
     {
         case ssGetChar :
@@ -593,7 +593,7 @@ ParserFlags cclass_Unicode::getFlags(sal_uInt32 const c)
 }
 
 
-ParserFlags cclass_Unicode::getFlagsExtended(sal_uInt32 const c) const
+ParserFlags cclass_Unicode::getFlagsExtended(sal_uInt32 const c, const cclass_Unicode::ScanState eState) const
 {
     if ( c == cGroupSep )
         return ParserFlags::VALUE;
@@ -702,7 +702,7 @@ ParserFlags cclass_Unicode::getContCharsFlags( sal_Unicode c )
 void cclass_Unicode::parseText( ParseResult& r, const OUString& rText, sal_Int32 nPos, sal_Int32 nTokenType )
 {
     assert(r.LeadingWhiteSpace == 0);
-    eState = ssGetChar;
+    ScanState eState = ssGetChar;
 
     //! All the variables below (plus ParseResult) have to be reset on ssRewindFromValue!
     OUStringBuffer aSymbol;
@@ -723,7 +723,7 @@ void cclass_Unicode::parseText( ParseResult& r, const OUString& rText, sal_Int32
     while ((current != 0) && (eState != ssStop))
     {
         ++nCodePoints;
-        ParserFlags nMask = getFlags(current);
+        ParserFlags nMask = getFlags(current, eState);
         if ( nMask & ParserFlags::EXCLUDED )
             eState = ssBounce;
         if ( bMightBeWord )
@@ -827,7 +827,7 @@ void cclass_Unicode::parseText( ParseResult& r, const OUString& rText, sal_Int32
                 {
                     if (current == cGroupSep)
                     {
-                        if (getFlags(nextChar) & ParserFlags::VALUE_DIGIT)
+                        if (getFlags(nextChar, eState) & ParserFlags::VALUE_DIGIT)
                             nParseTokensType |= KParseTokens::GROUP_SEPARATOR_IN_NUMBER;
                         else
                         {
@@ -850,7 +850,7 @@ void cclass_Unicode::parseText( ParseResult& r, const OUString& rText, sal_Int32
                 }
                 else if (current == 'E' || current == 'e')
                 {
-                    ParserFlags nNext = getFlags(nextChar);
+                    ParserFlags nNext = getFlags(nextChar, eState);
                     if ( nNext & ParserFlags::VALUE_EXP )
                         ;   // keep it going
                     else if (bMightBeWord && ((nNext & ParserFlags::WORD) || !nextChar))
@@ -865,7 +865,7 @@ void cclass_Unicode::parseText( ParseResult& r, const OUString& rText, sal_Int32
                 {
                     if ( (cLast == 'E') || (cLast == 'e') )
                     {
-                        ParserFlags nNext = getFlags(nextChar);
+                        ParserFlags nNext = getFlags(nextChar, eState);
                         if ( nNext & ParserFlags::VALUE_EXP_VALUE )
                             ;   // keep it going
                         else if (bMightBeWord && ((nNext & ParserFlags::WORD) || !nextChar))
diff --git a/i18npool/source/transliteration/transliteration_body.cxx b/i18npool/source/transliteration/transliteration_body.cxx
index e1fc11a8d70a..80072219780c 100644
--- a/i18npool/source/transliteration/transliteration_body.cxx
+++ b/i18npool/source/transliteration/transliteration_body.cxx
@@ -194,7 +194,8 @@ Transliteration_casemapping::Transliteration_casemapping()
 void
 Transliteration_casemapping::setMappingType( const MappingType rMappingType, const Locale& rLocale )
 {
-    nMappingType = rMappingType;
+    if (nMappingType != rMappingType)
+        nMappingType = rMappingType;
     if (aLocale != rLocale)
         aLocale = rLocale;
 }