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[kenorb <kenorb@xxxxxxxxx>]

** Attachment added: "EXC_BAD_ACCESS (SIGSEGV) on OSX"
   https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1525436/+attachment/4533478/+files/bash_2015-12-11-232316_mini-mac.crash

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https://bugs.launchpad.net/bugs/1525436

Title:
  SEGV on function loop

Status in bash package in Ubuntu:
  New

Bug description:
  I've the following code:

  $ cat foo.sh
  #!/bin/bash
  function f() { f; }; f;

  or:

  $ cat test.sh
  #!/bin/bash
  function foo() { foo; }
  foo

  which both crashing in the following way:

  $ ./foo.sh
  Segmentation fault (core dumped)

  is that normal?

  dmesg on Linux shows me the following errors:

  [  146.205518] foo.sh[1999]: segfault at 7fff9b6c8ef8 ip 00000000004b7628 sp 00007fff9b6c8f00 error 6 in bash[400000+f2000]
  [  867.791687] foo.sh[2020]: segfault at 7ffc82a11fe8 ip 00000000004b7628 sp 00007ffc82a11ff0 error 6 in bash[400000+f2000]
  [ 1023.472538] foo.sh[2049]: segfault at 7fff67f93f78 ip 00000000004b7628 sp 00007fff67f93f80 error 6 in bash[400000+f2000]
  [ 1129.373294] foo.sh[2058]: segfault at 7ffcf059ff68 ip 00000000004b7628 sp 00007ffcf059ff70 error 6 in bash[400000+f2000]

  On OSX I've got this:
  VM Regions Near 0x7fff503edfb8:
      MALLOC_SMALL           00007ff65d800000-00007ff65e000000 [ 8192K] rw-/rwx SM=PRV  
  --> STACK GUARD            00007fff4cbee000-00007fff503ee000 [ 56.0M] ---/rwx SM=NUL  stack guard for thread 0
      Stack                  00007fff503ee000-00007fff50bee000 [ 8192K] rw-/rwx SM=PRV  thread 0

  Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
  0   bash                          	0x000000010f053ffa 0x10f012000 + 270330
  1   bash                          	0x000000010f04f964 0x10f012000 + 252260

  This happens in Ubuntu VM and on OSX.

  
  I understand there is a infinite loop, however should bash crash with SEGV? If it's out of resources (ulimit), it should be Killed by kernel instead.

  My versions of bash which I've tested:
  GNU bash, version 4.3.42(1)-release (x86_64-apple-darwin15.0.0)
  GNU bash, version 4.3.30(1)-release (x86_64-pc-linux-gnu)

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