[lldb-dev] [Bug 23091] New: Thread info on newly created threads causes segfault

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=23091

            Bug ID: 23091
           Summary: Thread info on newly created threads causes segfault
           Product: lldb
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: lldb-dev at cs.uiuc.edu
          Reporter: chaorenl at google.com
    Classification: Unclassified

If the newly created thread is still in libc.so*`__*, a thread info on that
thread will cause immediate segfault.

This could (hopefully) be related to a rare race condition in
TestSetWatchlocation.py, wherein if a breakpoint is hit immediately after
thread creation, the new thread will miss the stop all event, and continue to
be in the running state when the watchpoint is being set, causing a failure.

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