From e021cda255e14eebecde2fc1c92446e25a2ee761 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 17 Jun 1998 10:24:52 +0000 Subject: Update. 1998-06-16 Andreas Schwab * sysdeps/generic/backtrace.c (INNER_THAN): New definition, use it to compare stack addresses. --- sysdeps/generic/backtrace.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'sysdeps/generic/backtrace.c') diff --git a/sysdeps/generic/backtrace.c b/sysdeps/generic/backtrace.c index 7ac1d5f2c4..2d329e19cf 100644 --- a/sysdeps/generic/backtrace.c +++ b/sysdeps/generic/backtrace.c @@ -44,6 +44,11 @@ extern void *__libc_stack_end; # define CURRENT_STACK_FRAME ({ char __csf; &__csf; }) #endif +/* By default we assume that the stack grows downward. */ +#ifndef INNER_THAN +# define INNER_THAN < +#endif + struct layout { struct layout *next; @@ -67,7 +72,8 @@ __backtrace (array, size) current = (struct layout *) top_frame; while (cnt < size) { - if ((void *) current < top_stack || (void *) current > __libc_stack_end) + if ((void *) current INNER_THAN top_stack + || !((void *) current INNER_THAN __libc_stack_end)) /* This means the address is out of range. Note that for the toplevel we see a frame pointer with value NULL which clearly is out of range. */ -- cgit v1.2.3