trigger --revert-all doesn't work when application has no terminal attached

[giulianobelinassi]

1. Build the project and run make check -j to build all tests.

2. Open two terminals and cd to build folder. On the first terminal, run:
   for i in $(seq 0 3); do LD_PRELOAD=./lib/.libs/libpulp.so ./tests/manyprocesses & done

On the second terminal, run:
LD_PRELOAD=../lib/.libs/libpulp.so ./tests/manyprocesses

3. Run

./tools/ulp trigger --revert-all="libmanyprocesses.so.0" tests/.libs/libmanyprocesses_livepatch1.so

You should see:

Summary:
  manyprocesses (pid: 22681):
    SUCCESS tests/.libs/libmanyprocesses_livepatch1.so
  manyprocesses (pid: 22593):
    FAILED tests/.libs/libmanyprocesses_livepatch1.so: Unknown error -512
  manyprocesses (pid: 22592):
    FAILED tests/.libs/libmanyprocesses_livepatch1.so: Unknown error -512
  manyprocesses (pid: 22591):
    FAILED tests/.libs/libmanyprocesses_livepatch1.so: Unknown error -512
  manyprocesses (pid: 22590):
    FAILED tests/.libs/libmanyprocesses_livepatch1.so: Unknown error -512

4. If you open a third terminal and run reptyr 22593, and rerun the trigger as in 3., you should see:

Summary:
  manyprocesses (pid: 22681):
    SUCCESS tests/.libs/libmanyprocesses_livepatch1.so
  manyprocesses (pid: 22593):
    SUCCESS tests/.libs/libmanyprocesses_livepatch1.so
  manyprocesses (pid: 22592):
    FAILED tests/.libs/libmanyprocesses_livepatch1.so: Unknown error -512
  manyprocesses (pid: 22591):
    FAILED tests/.libs/libmanyprocesses_livepatch1.so: Unknown error -512
  manyprocesses (pid: 22590):
    FAILED tests/.libs/libmanyprocesses_livepatch1.so: Unknown error -512 

[giulianobelinassi]

The expected result is that every patch should SUCCESS.