[Bug 2059078] Re: proposed-migration for faketime 0.9.10-2.1ubuntu1

[Simon Chopin]

What now remains to be done is to heavily patch faketime to, when on
armhf:

1/ use the proper symbols from glibc (e.g. __clock_gettime64 instead of __clock_gettime)
2/ expose those symbols instead of the legacy 32-bit ones.

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Title:
  proposed-migration for faketime 0.9.10-2.1ubuntu1

Status in bash package in Ubuntu:
  New
Status in faketime package in Ubuntu:
  New

Bug description:
  faketime 0.9.10-2.1ubuntu1 is stuck in -proposed with build failures
  on armhf.

  On armhf, the testsuite confusingly fails with a stack smash error.
  But this error happens in bash, which isn't even meant to be the
  process under test.

  Minimal reproducer:
  # LD_PRELOAD=./src/libfaketime.so.1 bash -c 'exit 0'
  *** stack smashing detected ***: terminated
  Aborted (core dumped)
  #

  Confusingly, ltrace shows different results for the newly-built binary
  than from one built without 64-bit time_t.

  # LD_PRELOAD=./src/libfaketime.so.1 ltrace --library '*faketime*' bash -c 'exit 0'
  bash->getrandom(0x1f3bf08, 1, 0x9683b0, 0)       = 0xc8202
  bash->getrandom(0xc8203, 0xf7fad53c, 1023, 0xf7eef801) = 0xc8202
  *** stack smashing detected ***: terminated
  --- SIGABRT (Aborted) ---
  +++ killed by SIGABRT +++
  # LD_PRELOAD=/usr/lib/arm-linux-gnueabihf/faketime/libfaketime.so.1 ltrace --library '*faketime*' bash -c 'exit 0' 
  bash->gettimeofday(0x8b07a0, 0)                  = 0
  bash->getpid()                                   = 819717
  bash->gettimeofday(0xffb88714, 0)                = 0
  bash->getpid()                                   = 819717
  bash->gettimeofday(0xffb8871c, 0)                = 0
  bash->getpid()                                   = 819717
  +++ exited (status 0) +++
  #

  Unsetting -DFAKE_RANDOM in debian/rules does not fix the problem
  however.

  So simply loading the LD_PRELOAD library without executing it seems to
  be enough to break bash.

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