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i386 backtrace() question


While tracking down an unrelated libunwind failure on x86, I came
across this curious test in sysdeps/i386/backtrace.c:

      if ((void *) current < esp || (void *) current > __libc_stack_end)

The test is obvous for non-threaded programs.  However, I'd like to
confirm that the test is OK for multi-threaded programs as well,
because all thread stacks will be allocated below __libc_stack_end.
I'm pretty sure that's true for Linux, though I'm uncertain about how
stack-randomization or other OSes would affect the validity of the
test.  Could somebody confirm?

Thanks,

	--david


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