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Make backtraces slightly more reliable.
[pintos-anon]
/
src
/
lib
/
debug.c
diff --git
a/src/lib/debug.c
b/src/lib/debug.c
index 6d7c9e13bf064761b1496a232994040498b4c5d2..1dc1bf8fd69db3c5651654620dcf79200cbf6844 100644
(file)
--- a/
src/lib/debug.c
+++ b/
src/lib/debug.c
@@
-17,7
+17,7
@@
debug_backtrace (void)
printf ("Call stack:");
for (frame = __builtin_frame_address (0);
-
frame != NULL
&& frame[0] != NULL;
+
(uintptr_t) frame >= 0x1000
&& frame[0] != NULL;
frame = frame[0])
printf (" %p", frame[1]);
printf (".\n");