From: Ben Pfaff <blp@nicira.com>
Date: Thu, 16 Dec 2010 19:04:14 +0000 (-0800)
Subject: backtrace: Only use __builtin_frame_address if GNU C is in use.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e4fd8d288ad1530be566cdeb503fb63a43c149ff;p=openvswitch

backtrace: Only use __builtin_frame_address if GNU C is in use.

This eliminates one small GNU C dependency.
---

diff --git a/lib/backtrace.c b/lib/backtrace.c
index 282f6b86..91549db3 100644
--- a/lib/backtrace.c
+++ b/lib/backtrace.c
@@ -83,6 +83,7 @@ in_stack(void *p)
 void
 backtrace_capture(struct backtrace *backtrace)
 {
+#ifdef __GNUC__
     void **frame;
     size_t n;
 
@@ -95,4 +96,7 @@ backtrace_capture(struct backtrace *backtrace)
         backtrace->frames[n++] = (uintptr_t) frame[1];
     }
     backtrace->n_frames = n;
+#else
+    backtrace->n_frames = 0;
+#endif
 }