Show usage message on invalid command line argument

[tl-append] / common.h

diff --git a/common.h b/common.h
index 8d40a7811bcff1632a42af149bddf34504ee9673..93d722f8f67fb2cb04b65c1b574a729ddb0f8a0b 100644 (file)
--- a/common.h
+++ b/common.h
@@ -1,6 +1,6 @@
 #include <time.h>
 
 #include <time.h>
 

-extern const char *FILENAME;
+extern const char *const FILENAME;

 
 void die(const char *message);
 
 
 void die(const char *message);