[RTEMS Project] #2830: throwing std::runtime on PC BSP fails.

[RTEMS trac]

#2830: throwing std::runtime on PC BSP fails.
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 Reporter:  chrisj   |      Owner:
     Type:  defect   |     Status:  new
 Priority:  normal   |  Milestone:  4.12
Component:  General  |    Version:  4.12
 Severity:  normal   |   Keywords:
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 Throwing a `std::runtime()` exception lock up.

 The lock up is in the exception clean up handler where the exception
 object is destructed. The destructor loop distructing the std::string
 object. The path ends up in libstdc++-v3/include/ext/atomicity.h line 48
 or __exchange_and_add.

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Ticket URL: <http://devel.rtems.org/ticket/2830>
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