diff options
| author | Caolán McNamara <caolanm@redhat.com> | 2017-10-19 17:11:37 +0100 |
|---|---|---|
| committer | Caolán McNamara <caolanm@redhat.com> | 2017-10-20 00:39:38 +0200 |
| commit | 312a8a32a579160fd1665ab10dc37bd73c89961a (patch) | |
| tree | b301fb56eecd8f76fdc624045b7ad525cbd66862 /sot/source/sdstor | |
| parent | 143c482b3189cb084fbdf5e6f78f15b43f099e24 (diff) | |
ofz+ubsan: runtime error: left shift cannot be represented in type
Change-Id: Ic153b39475abbd562e4c81b47089ca8280080cff
Reviewed-on: https://gerrit.libreoffice.org/43569
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
Diffstat (limited to 'sot/source/sdstor')
| -rw-r--r-- | sot/source/sdstor/stgstrms.cxx | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sot/source/sdstor/stgstrms.cxx b/sot/source/sdstor/stgstrms.cxx index 1f7f0769f0ce..0933ba7d265e 100644 --- a/sot/source/sdstor/stgstrms.cxx +++ b/sot/source/sdstor/stgstrms.cxx @@ -71,10 +71,12 @@ rtl::Reference< StgPage > StgFAT::GetPhysPage( sal_Int32 nByteOff ) sal_Int32 StgFAT::GetNextPage( sal_Int32 nPg ) { - if( nPg >= 0 ) + if (nPg >= 0) { - rtl::Reference< StgPage > pPg = GetPhysPage( nPg << 2 ); - nPg = pPg.is() ? StgCache::GetFromPage( pPg, m_nOffset >> 2 ) : STG_EOF; + if (nPg > (SAL_MAX_INT32 >> 2)) + return STG_EOF; + rtl::Reference< StgPage > pPg = GetPhysPage( nPg << 2 ); + nPg = pPg.is() ? StgCache::GetFromPage( pPg, m_nOffset >> 2 ) : STG_EOF; } return nPg; } |