From: Godmar Back <godmar@gmail.com>
Date: Fri, 14 Nov 2008 02:30:41 +0000 (-0500)
Subject: fixed backtrace to work with -O (now conforms to
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=commitdiff_plain;h=425760a116e437cf758541d5e3a52e0d6a1e1a47

fixed backtrace to work with -O (now conforms to
http://gcc.gnu.org/onlinedocs/gcc/Return-Address.html )
---

diff --git a/src/lib/debug.c b/src/lib/debug.c
index 1dc1bf8..b4f8c2d 100644
--- a/src/lib/debug.c
+++ b/src/lib/debug.c
@@ -15,8 +15,8 @@ debug_backtrace (void)
   static bool explained;
   void **frame;
   
-  printf ("Call stack:");
-  for (frame = __builtin_frame_address (0);
+  printf ("Call stack: %p", __builtin_return_address (0));
+  for (frame = __builtin_frame_address (1);
        (uintptr_t) frame >= 0x1000 && frame[0] != NULL;
        frame = frame[0]) 
     printf (" %p", frame[1]);