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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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