* vm_dump.c: undef HAVE_BACKTRACE when the OS is FreeBSD (in other

words backtrace() is libexecinfo) and it is optimized.
  This temporary hack should be also applied to other libexecinfo
  environments.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29982 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Tue Nov 30 16:29:19 2010  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* vm_dump.c: undef HAVE_BACKTRACE when the OS is FreeBSD (in other
+	  words backtrace() is libexecinfo) and it is optimized.
+	  This temporary hack should be also applied to other libexecinfo
+	  environments.
+
 Tue Nov 30 16:23:23 2010  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* lib/net/http.rb: improve rdoc.

vm_dump.c

@@ -585,6 +585,9 @@ bugreport_backtrace(void *arg, VALUE file, int line, VALUE method)
     return 0;
 }
 
+#if defined(__FreeBSD__) && defined(__OPTIMIZE__)
+#undef HAVE_BACKTRACE
+#endif
 #if HAVE_BACKTRACE
 # include <execinfo.h>
 #elif defined(_WIN32)