Other backtrace

src/shc.c

@@ -758,19 +758,46 @@ static const char * RTC[] = {
 0};
 
 void handler(int sig) {
-	void *array[10];
-	size_t size;
+	void *trace[10];
+	int trace_size;
+	int i;
+	char **messages;
+
 
 	// get void*'s for all entries on the stack
-	size = backtrace(array, 10);
+	trace_size = backtrace(trace, 10);
 
 	// print out all the frames to stderr
 	fprintf(stderr, "Error: signal %d:\n", sig);
-	backtrace_symbols_fd(array, size, STDERR_FILENO);
+	backtrace_symbols_fd(trace, size, STDERR_FILENO);
+
+	messages = backtrace_symbols(trace, trace_size);
+
+
+	/* skip first stack frame (points here) */
+	printf("[bt] Execution path:\n");
+	for (i=1; i<trace_size; ++i)
+	{
+		printf("[bt] #%d %s\n", i, messages[i]);
+
+		/* find first occurrence of '(' or ' ' in message[i] and assume
+		 * everything before that is the file name. (Don't go beyond 0 though
+		 * (string terminator)*/
+		size_t p = 0;
+		while(messages[i][p] != '(' && messages[i][p] != ' '
+		        && messages[i][p] != 0)
+		    ++p;
+
+		char syscom[256];
+		snprintf(syscom, sizeof(syscom), "addr2line %p -e %.*s", trace[i], p, messages[i]);
+		    //last parameter is the file name of the symbol
+		system(syscom);
+	}
 	exit(1);
 }
 
 
+
 static int parse_an_arg(int argc, char * argv[])
 {
 	extern char * optarg;