Index: logger.c
===================================================================
RCS file: /usr/cvsroot/asterisk/logger.c,v
retrieving revision 1.80
diff -u -r1.80 logger.c
--- logger.c	31 Aug 2005 02:43:44 -0000	1.80
+++ logger.c	10 Sep 2005 19:34:49 -0000
@@ -20,6 +20,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <execinfo.h>
 
 #define SYSLOG_NAMES /* so we can map syslog facilities names to their numeric values,
 		        from <syslog.h> which is included by logger.h */
@@ -797,6 +798,31 @@
 		ast_log(LOG_EVENT,"Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
 		if (option_verbose)
 			ast_verbose("Rotated Logs Per SIGXFSZ (Exceeded file size limit)\n");
+	}
+}
+
+void ast_backtrace(int levels)
+{
+	int count=0, i=0;
+	void **addresses;
+	char **strings;
+
+	addresses = calloc(levels, sizeof(void *));
+	if (addresses) {
+		count = backtrace(addresses, levels);
+		strings = backtrace_symbols(addresses, count);
+		if (strings) {
+			ast_log(LOG_WARNING, "Got %d backtrace record%c\n", count, count != 1 ? 's' : ' ');
+			for (i=0; i < count ; i++) {
+				ast_log(LOG_WARNING, "#%d: [%08X] %s\n", i, (unsigned int)addresses[i], strings[i]);
+			}
+			free(strings);
+		} else {
+			ast_log(LOG_WARNING, "Could not allocate memory for backtrace\n");
+		}
+		free(addresses);
+	} else {
+		ast_log(LOG_WARNING, "Could not allocate memory for backtrace\n");
 	}
 }
 
Index: Makefile
===================================================================
RCS file: /usr/cvsroot/asterisk/Makefile,v
retrieving revision 1.201
diff -u -r1.201 Makefile
--- Makefile	31 Aug 2005 18:48:21 -0000	1.201
+++ Makefile	10 Sep 2005 19:34:49 -0000
@@ -42,7 +42,7 @@
 OVERWRITE=y
 
 #Tell gcc to optimize the code
-OPTIMIZE+=-O6
+#OPTIMIZE+=-O6
 
 #Include debug symbols in the executables (-g) and profiling info (-pg)
 DEBUG=-g #-pg
@@ -308,7 +308,7 @@
 else
 #These are used for all but Darwin
   ASTLINK=-Wl,-E 
-  SOLINK=-shared -Xlinker -x
+  SOLINK=-shared -Xlinker -x -Wl,-E
 endif
 
 ifeq (${OSARCH},FreeBSD)
Index: pbx.c
===================================================================
RCS file: /usr/cvsroot/asterisk/pbx.c,v
retrieving revision 1.271
diff -u -r1.271 pbx.c
--- pbx.c	2 Sep 2005 18:07:26 -0000	1.271
+++ pbx.c	10 Sep 2005 19:34:49 -0000
@@ -1678,6 +1816,7 @@
 		case STATUS_NO_CONTEXT:
 			if ((action != HELPER_EXISTS) && (action != HELPER_MATCHMORE))
 				ast_log(LOG_NOTICE, "Cannot find extension context '%s'\n", context);
+			ast_backtrace(20);
 			break;
 		case STATUS_NO_EXTENSION:
 			if ((action != HELPER_EXISTS) && (action !=  HELPER_CANMATCH) && (action != HELPER_MATCHMORE))
@@ -2295,6 +2434,7 @@
 			} else {
 				ast_log(LOG_WARNING, "Channel '%s' sent into invalid extension '%s' in context '%s', but no invalid handler\n",
 					c->name, c->exten, c->context);
+				ast_backtrace(20);
 				goto out;
 			}
 		} else if (c->_softhangup == AST_SOFTHANGUP_TIMEOUT) {
Index: include/asterisk/logger.h
===================================================================
RCS file: /usr/cvsroot/asterisk/include/asterisk/logger.h,v
retrieving revision 1.14
diff -u -r1.14 logger.h
--- include/asterisk/logger.h	30 Aug 2005 18:32:09 -0000	1.14
+++ include/asterisk/logger.h	10 Sep 2005 19:34:49 -0000
@@ -58,6 +58,8 @@
 extern void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
 	__attribute__ ((format (printf, 5, 6)));
 
+extern void ast_backtrace(int levels);
+
 extern void ast_queue_log(const char *queuename, const char *callid, const char *agent, const char *event, const char *fmt, ...)
 	__attribute__ ((format (printf, 5, 6)));