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#! stap -p4
probe kernel.function("sys_open") { println(@defined($foobar)) } # invalid
probe kernel.function("sys_open") { println(@defined($mode)) } # valid
probe kernel.function("sys_open").return { println(@defined($foobar)) } # invalid
probe kernel.function("sys_open").return { println(@defined($mode)) } # valid
probe kernel.trace("*")? { println(@defined($rw)) } # valid and invalid in places
probe kernel.mark("*")? { println(@defined($foo)) } # invalid
probe kernel.mark("*")? { println(@defined($name)) } # valid
probe process("stap").mark("*")? { println(@defined($arg1)) } # valid
probe process("stap").mark("*")? { println(@defined($nosuchvar)) } # invalid
probe procfs("file").read { println(@defined($nosuchvar)) } # invalid
probe procfs("file").write { println(@defined($value)) } # valid
%( CONFIG_UTRACE == "y" %?
probe process("stap").syscall { println(@defined($arg1)) } # valid
probe process("stap").syscall { println(@defined($argZZ)) } # invalid
probe process("stap").syscall.return { println(@defined($nosuchvar)) } # invalid
probe process("stap").syscall.return { println(@defined($syscall)) } # valid
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