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glibc/sysdeps/unix/sysv/linux
Stefan Liebler 2c80445787 S390: Fix tst-ptrace-singleblock if kernel does not support PTRACE_SINGLEBLOCK.
The request PTRACE_SINGLEBLOCK was introduced in Linux 3.15.  Thus the ptrace call
will fail on older kernels.
Thus the test is now testing PTRACE_SINGLEBLOCK with data argument pointing to a
buffer on stack which is assumed to fail.  If the request would be interpreted as
PTRACE_GETREGS, then the ptrace call will not fail and the regs are written to buf.

If we run with a kernel with support for PTRACE_SINGLEBLOCK a ptrace call with
data=NULL, returns zero with no error.  If we run with a kernel without support for
PTRACE_SINGLEBLOCK a ptrace call with data=NULL reports an error.
In the latter case, the test is just continuing with PTRACE_CONT.

ChangeLog:

	* sysdeps/unix/sysv/linux/s390/tst-ptrace-singleblock.c:
	Support running on kernels without PTRACE_SINGLEBLOCK.
2017-07-11 10:38:44 +02:00
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