Index: include/asterisk/file.h
===================================================================
--- include/asterisk/file.h	(revision 214609)
+++ include/asterisk/file.h	(working copy)
@@ -140,6 +140,7 @@
 #endif
 	};
 	const char *orig_chan_name;
+	char big_waste_of_memory[4096];
 };
 
 #define SEEK_FORCECUR	10
Index: main/file.c
===================================================================
--- main/file.c	(revision 214609)
+++ main/file.c	(working copy)
@@ -308,7 +308,15 @@
 	char *cmd = NULL;
 	size_t size = 0;
 	struct ast_filestream *f = arg;
+	int i;
 
+	for (i = 0; i < ARRAY_LEN(f->big_waste_of_memory); i++) {
+		if (f->big_waste_of_memory[i]) {
+			ast_log(LOG_ERROR, "Found a non-zero byte at %d ! :-(\n", i);
+			break;
+		}
+	}
+
 	/* Stop a running stream if there is one */
 	if (f->owner) {
 		if (f->fmt->format < AST_FORMAT_MAX_AUDIO) {