bugs/5.cfa: In function '_X4mainFi___1': bugs/5.cfa:8:43: error: '_unq0_finished_' undeclared (first use in this function) foo(bar()); ^ bugs/5.cfa:8:43: note: each undeclared identifier is reported only once for each function it appears in bugs/5.cfa:8:225: warning: left-hand operand of comma expression has no effect [-Wunused-value] foo(bar()); ^