From b668f1417d0ed87df3681247bd7ac1b065a452f0 Mon Sep 17 00:00:00 2001
From: Martin Willi <martin@revosec.ch>
Date: Mon, 4 Mar 2013 15:50:21 +0100
Subject: [PATCH] Don't invoke addr2line if dladdr() did not yield a filename

---
 src/libstrongswan/utils/backtrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libstrongswan/utils/backtrace.c b/src/libstrongswan/utils/backtrace.c
index 05851c2b7..45571981e 100644
--- a/src/libstrongswan/utils/backtrace.c
+++ b/src/libstrongswan/utils/backtrace.c
@@ -407,7 +407,7 @@ METHOD(backtrace_t, log_, void,
 						esc(file, TTY_FG_YELLOW), info.dli_fname,
 						esc(file, TTY_FG_DEF), info.dli_fbase, this->frames[i]);
 			}
-			if (detailed)
+			if (detailed && info.dli_fname[0])
 			{
 				print_sourceline(file, (char*)info.dli_fname, ptr);
 			}