File: pr11809.stp

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#!/bin/sh

# PR11809
# This stap command may or may not fail, depending on function/var
# availability.  When it does fail, it should not be with "stack underflow".
stap $@ -e 'probe kernel.function("next_tgid") { println($iter->tgid) }' -p2 2>&1 |
grep "stack underflow"
[ "$?" -eq 1 ]