BUG: sp_OAMethod May Cause Access Violation When @@servername Is NULL (295939)

SYMPTOMS

When @@servername returns NULL and is passed as a parameter to the sp_OAMethod stored procedure, an access violation (AV) may occur.

The following can be seen in the errorlog for SQL Server 7.0 SP3:

Short Stack Dump
0x410766ed Module(opends60+166ed) (srv_rpcp::FCopyFromRpcParam+19f)
0x41076313 Module(opends60+16313) (int_setRPC+77)
0x005fcec5 Module(sqlservr+1fcec5) (CParamExchange::FillSrvProc+10e)
0x00601e36 Module(sqlservr+201e36) (CXProc::Execute+e6)
0x005349d8 Module(sqlservr+1349d8) (CSQLSource::Execute+2ab)
0x0046225f Module(sqlservr+6225f) (CStmtExec::XretLocalExec+127)
0x0046211e Module(sqlservr+6211e) (CStmtExec::XretExecute+253)
0x0040f487 Module(sqlservr+f487) (CMsqlExecContext::ExecuteStmts+11b)
0x0040ef35 Module(sqlservr+ef35) (CMsqlExecContext::Execute+16b)