[Bug gdb/16809] interrupt -a

["dilyan.palauzov at aegee dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16809

--- Comment #2 from dilyan.palauzov at aegee dot org <dilyan.palauzov at aegee dot org> ---
I use gdb-7.7.1 and the changes from
https://sourceware.org/ml/gdb-patches/2014-07/msg00304.html were already
applied.

In 7.7.1 I applied only the patch from gdb/infcmd.c on
interrupt_target_command(), because there is no interrupt_command().  I cannot
link gdb:

infcmd.o: In function `wait_thread_stopped':
gdb-7.7.1/gdb/infcmd.c:2818: undefined reference to `print_stop_event'
infcmd.o: In function `interrupt_target_command':
gdb-7.7.1/gdb/infcmd.c:2921: undefined reference to `prepare_execution_command'

Please provide patch toward gdb771.

Sample program, that leads to the described error:

#include <iostream>
#include <unistd.h>
#include <thread>

void f() {
  std::cout << "A" << std::endl;
  sleep (10);
  std::cout << "Z" << std::endl;
}

int main() {
  std::thread t1 { f }; std::thread t2 { f };
  std::thread t3 { f }; std::thread t4 { f };
  std::thread t5 { f }; std::thread t6 { f };
  std::thread t7 { f }; std::thread t8 { f };
  std::thread t9 { f }; std::thread t10 { f };
  std::thread t11 { f }; std::thread t12 { f };
  sleep (15);
  t1.join(); t2.join(); t3.join(); t4.join(); t5.join(); t6.join();
  t7.join(); t8.join(); t9.join(); t10.join(); t11.join(); t12.join();
}

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