New Defects reported by Coverity Scan for LibreOffice

Hi,

Please find the latest report on new defect(s) introduced to LibreOffice found with Coverity Scan.

5 new defect(s) introduced to LibreOffice found with Coverity Scan.
3 defect(s), reported by Coverity Scan earlier, were marked fixed in the recent build analyzed by 
Coverity Scan.

New defect(s) Reported-by: Coverity Scan
Showing 5 of 5 defect(s)


** CID 1374093:  Control flow issues  (UNREACHABLE)
/xmlsecurity/source/pdfio/pdfdocument.cxx: 1419 in 
xmlsecurity::pdfio::PDFDocument::ValidateSignature(SvStream &, xmlsecurity::pdfio::PDFObjectElement 
*, SignatureInformation &)()


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*** CID 1374093:  Control flow issues  (UNREACHABLE)
/xmlsecurity/source/pdfio/pdfdocument.cxx: 1419 in 
xmlsecurity::pdfio::PDFDocument::ValidateSignature(SvStream &, xmlsecurity::pdfio::PDFObjectElement 
*, SignatureInformation &)()
1413         NSS_CMSSignerInfo_Destroy(pCMSSignerInfo);
1414     
1415         return true;
1416     #endif
1417     
1418         // Not implemented.
> > >     CID 1374093:  Control flow issues  (UNREACHABLE)
> > >     This code cannot be reached: "(void)rStream;".
1419         (void)rStream;
1420         (void)rInformation;
1421     
1422         return false;
1423     }
1424     

** CID 1374092:  Control flow issues  (UNREACHABLE)
/xmlsecurity/source/pdfio/pdfdocument.cxx: 620 in xmlsecurity::pdfio::PDFDocument::Sign(const 
com::sun::star::uno::Reference<com::sun::star::security::XCertificate> &)()


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*** CID 1374092:  Control flow issues  (UNREACHABLE)
/xmlsecurity/source/pdfio/pdfdocument.cxx: 620 in xmlsecurity::pdfio::PDFDocument::Sign(const 
com::sun::star::uno::Reference<com::sun::star::security::XCertificate> &)()
614         NSS_CMSMessage_Destroy(pCMSMessage);
615     
616         return true;
617     #endif
618     
619         // Not implemented.
> > >     CID 1374092:  Control flow issues  (UNREACHABLE)
> > >     This code cannot be reached: "(void)pDerEncoded;".
620         (void)pDerEncoded;
621         (void)nDerEncoded;
622     
623         return false;
624     }
625     

** CID 1374091:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
/vcl/source/gdi/CommonSalLayout.cxx: 105 in scaleHbFont(hb_font_t *, const FontSelectPattern &)()


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*** CID 1374091:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
/vcl/source/gdi/CommonSalLayout.cxx: 105 in scaleHbFont(hb_font_t *, const FontSelectPattern &)()
99         return pHbFont;
100     }
101     
102     static void scaleHbFont(hb_font_t* pHbFont, const FontSelectPattern& aFontSelData)
103     {
104         uint64_t nXScale = aFontSelData.mnWidth << 6;
> > >     CID 1374091:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
> > >     Potentially overflowing expression "aFontSelData.mnHeight << 6" with type "int" (32 bits, 
> > > signed) is evaluated using 32-bit arithmetic, and then used in a context that expects an 
> > > expression of type "uint64_t" (64 bits, unsigned).
105         uint64_t nYScale = aFontSelData.mnHeight << 6;
106     
107     #if defined(_WIN32)
108         // HACK to get stretched/shrunken text. TODO: Get rid of HACK
109         if (nXScale)
110             nXScale = double(nXScale) * 1.812;

** CID 1374090:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
/vcl/source/gdi/CommonSalLayout.cxx: 104 in scaleHbFont(hb_font_t *, const FontSelectPattern &)()


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*** CID 1374090:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
/vcl/source/gdi/CommonSalLayout.cxx: 104 in scaleHbFont(hb_font_t *, const FontSelectPattern &)()
98     
99         return pHbFont;
100     }
101     
102     static void scaleHbFont(hb_font_t* pHbFont, const FontSelectPattern& aFontSelData)
103     {
> > >     CID 1374090:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
> > >     Potentially overflowing expression "aFontSelData.mnWidth << 6" with type "int" (32 bits, 
> > > signed) is evaluated using 32-bit arithmetic, and then used in a context that expects an 
> > > expression of type "uint64_t" (64 bits, unsigned).
104         uint64_t nXScale = aFontSelData.mnWidth << 6;
105         uint64_t nYScale = aFontSelData.mnHeight << 6;
106     
107     #if defined(_WIN32)
108         // HACK to get stretched/shrunken text. TODO: Get rid of HACK
109         if (nXScale)

** CID 1374089:  Error handling issues  (CHECKED_RETURN)
/comphelper/source/misc/backupfilehelper.cxx: 1694 in 
comphelper::BackupFileHelper::getInitialBaseURL()()


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*** CID 1374089:  Error handling issues  (CHECKED_RETURN)
/comphelper/source/misc/backupfilehelper.cxx: 1694 in 
comphelper::BackupFileHelper::getInitialBaseURL()()
1688                     if (-1 == nEnd)
1689                     {
1690                         nEnd = conf.getLength();
1691                     }
1692     
1693                     maInitialBaseURL = conf.copy(nStart, nEnd - nStart);
> > >     CID 1374089:  Error handling issues  (CHECKED_RETURN)
> > >     Calling "startsWith" without checking return value (as is done elsewhere 119 out of 122 
> > > times).
1694                     maInitialBaseURL.startsWith("!", &maInitialBaseURL);
1695                 }
1696     
1697                 if (!maInitialBaseURL.isEmpty())
1698                 {
1699                     // split URL at extension and at last path separator


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