Daniel Malea a35970a6f6 Fix Linux bug that leaves lldb in invalid state after expression evaluation times out. ...

- Handle EINVAL return code from ptrace(GETSIGINFO, ...): not an error, but 'group-stop' state on Linux
- propagate SIGSTOP to inferior in above case
- this commit resolves the failure in expression_command/timeout testcase

Thanks to Sean Callanan & Matt Kopec for helping debug this problem

llvm-svn: 168523

2012-11-23 18:09:58 +00:00

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