Use of uninitialized value in pattern match (m//) at bugs.t line 6.
Use of uninitialized value in pattern match (m//) at bugs.t line 6.
Use of uninitialized value in pattern match (m//) at bugs.t line 6.
Use of uninitialized value in pattern match (m//) at bugs.t line 6.
Use of uninitialized value in pattern match (m//) at bugs.t line 6.
plain smatch: 1
plain grep:   1
tied smatch:  
tied grep:    1