WIN: Dump Study fails

Reason: decrement iterator on an empty list
This commit is contained in:
eap 2019-03-29 16:46:47 +03:00
parent 5e337ede0d
commit e9abd0b9b5

View File

@ -5060,40 +5060,33 @@ bool _pyStringFamily::Add( const char* str )
const int minPrefixSize = 4;
// count "smaller" strings with the same prefix
std::list< _AString >::iterator itLess = itStr; --itLess;
int nbLess = 0;
for ( ; itLess != _strings.end(); --itLess )
std::list< _AString >::iterator itLess = itStr;
while ( itLess != _strings.begin() )
{
--itLess;
if ( strncmp( str, itLess->ToCString(), minPrefixSize ) == 0 )
++nbLess;
else
break;
{
++itLess;
break;
}
}
// itLess points to the 1st string with same prefix
// count "greater" strings with the same prefix
std::list< _AString >::iterator itMore = itStr;
int nbMore = 0;
std::list< _AString >::iterator itMore = itStr;
for ( ; itMore != _strings.end(); ++itMore )
if ( strncmp( str, itMore->ToCString(), minPrefixSize ) == 0 )
++nbMore;
else
break;
--itMore;
// itMore points to the 1st string with greater prefix
if ( nbLess + nbMore > 1 ) // ------- ADD a NEW CHILD FAMILY -------------
{
// look for a maximal prefix length
// int lessPrefSize = 3, morePrefSize = 3;
// if ( nbLess > 0 )
// while( itLess->ToCString()[ lessPrefSize ] == str[ lessPrefSize ] )
// ++lessPrefSize;
// if ( nbMore > 0 )
// while ( itMore->ToCString()[ morePrefSize ] == str[ morePrefSize ] )
// ++morePrefSize;
// int prefixSize = 3;
// if ( nbLess == 0 )
// prefixSize = morePrefSize;
// else if ( nbMore == 0 )
// prefixSize = lessPrefSize;
// else
// prefixSize = Min( lessPrefSize, morePrefSize );
int prefixSize = minPrefixSize;
_AString newPrefix ( str, prefixSize );
@ -5114,7 +5107,7 @@ bool _pyStringFamily::Add( const char* str )
for ( ; nbMore > 0; --nbMore, ++itStr )
newSubFam._strings.push_back( itStr->ToCString() + prefixSize );
_strings.erase( itLess, ++itMore );
_strings.erase( itLess, itMore );
}
else // too few string to make a family for them
{