On Thu, 2013-06-13 at 19:30 +0200, Jan Kratochvil wrote:
On Thu, 13 Jun 2013 15:48:22 +0200, Mark Wielaard wrote:
> But I don't fully understand
> why/where jmp is actually used in the test case.
It tests the unwinder can properly unwind even if we stop at the very first
instruction of a function. Therefore that ISACTIVATION is true for the bottom
frame.
O, I finally see how it works. When the child raises SIGUSR1 then the
backtrace.c testcase explicitly sets the PC to the first instruction of
jmp in backtrace-child to check this condition. How tricky and crafty :)