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fix rare crash: don't call PQgetvalue when there are no results.

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This commit is contained in:
Eric House 2011-06-30 19:39:00 -07:00
parent 5c5708fa66
commit 09b81c6ad7
1 changed files with 1 additions and 1 deletions
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2
xwords4/relay/dbmgr.cpp
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@ -229,7 +229,7 @@ DBMgr::AllDevsAckd( const char* const connName )
PGresult* result = PQexec( getThreadConn(), query ); PGresult* result = PQexec( getThreadConn(), query );
int nTuples = PQntuples( result ); int nTuples = PQntuples( result );
assert( nTuples <= 1 ); assert( nTuples <= 1 );
bool full = 't' == PQgetvalue( result, 0, 0 )[0]; bool full = nTuples == 1 && 't' == PQgetvalue( result, 0, 0 )[0];
PQclear( result ); PQclear( result );
logf( XW_LOGINFO, "%s=>%d", __func__, full ); logf( XW_LOGINFO, "%s=>%d", __func__, full );
return full; return full;