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From e1d7c78d95e4b73a311f10149d0a54547d307d5d Mon Sep 17 00:00:00 2001
From: Kevin Modzelewski <kmod@dropbox.com>
Date: Tue, 22 Apr 2014 15:50:40 -0700
Subject: [PATCH] Change the RBP-validation heuristic to allow size-0 call frames
---
diff --git a/src/x86_64/Gstep.c b/src/x86_64/Gstep.c
index 9fa0967..809d60b 100644
--- a/src/x86_64/Gstep.c
+++ b/src/x86_64/Gstep.c
@@ -173,7 +173,7 @@ unw_step (unw_cursor_t *cursor)
anything about new RBP (rbp1) since it may not be a frame
pointer in the frame above. Just check we get the value. */
if (ret < 0
- || rbp <= c->dwarf.cfa
+ || rbp < c->dwarf.cfa
|| (rbp - c->dwarf.cfa) > 0x4000)
{
rip_loc = DWARF_NULL_LOC;
--
1.7.4.1
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