[Bug 1430741] Re: strace crashed with SIGABRT in __GI_raise()

[yzp15]

Probably Spotify Linux Client process did crash with SIGABRT. strace
detects that child was killed with the signal and raises same signal for
itself just before exit (like in Bug #1062412)

There is a code in strace.c (main -> terminate() ) to raise the signal which killed the traced process. Strace does it exactly before exit
https://github.com/strace/strace/blob/1d98b287a4cb6901d369d78126d481508f9e35ef/strace.c#L2655

	if (exit_code > 0xff) {
		...
		/* Child was killed by a signal, mimic that.  */
		exit_code &= 0xff;
		signal(exit_code, SIG_DFL);
		...
		raise(exit_code);
	...
	exit(exit_code);

Code was added in 2008-09-29 commit
https://github.com/strace/strace/commit/a68096576afc07e51d33b49c432d658b27a7f13c
> (main): Exit/kill ourself with straced child's exitcode/signal.

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https://bugs.launchpad.net/bugs/1430741

Title:
  strace crashed with SIGABRT in __GI_raise()

Status in strace package in Ubuntu:
  Confirmed

Bug description:
  Crashed when using strace on Spotify Linux Client.

  Was trying to find which shared libraries are needed for playing local
  files.

  Ubuntu 15.04 Vivid Vervet

  ProblemType: Crash
  DistroRelease: Ubuntu 15.04
  Package: strace 4.8-1ubuntu5
  ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0
  Uname: Linux 3.19.0-7-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.16.2-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Wed Mar 11 16:52:02 2015
  Dependencies:
   gcc-5-base 5-20150309-1ubuntu1
   libc6 2.19-15ubuntu2
   libgcc1 1:5-20150309-1ubuntu1
   multiarch-support 2.19-15ubuntu2
  ExecutablePath: /usr/bin/strace
  InstallationDate: Installed on 2015-01-09 (60 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  ProcCmdline: strace spotify
  Signal: 6
  SourcePackage: strace
  StacktraceTop:
   __GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
   ?? ()
   __libc_start_main (main=0x402350, argc=2, argv=0x7fff6dbba1b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff6dbba1a8) at libc-start.c:287
   ?? ()
  Title: strace crashed with SIGABRT in __GI_raise()
  UpgradeStatus: Upgraded to vivid on 2015-02-28 (10 days ago)
  UserGroups: adm cdrom dip kvm libvirtd lpadmin plugdev sambashare sudo

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