Add TOYBOX_PEDANTIC_ARGS to check arguments when there are no arguments,

and make uptime use it.

4 files changed, 14 insertions, 1 deletions

diff --git a/Config.in b/Config.in
index 8fb1f139..2bfe30a8 100644
--- a/Config.in
+++ b/Config.in
@@ -135,6 +135,12 @@ config TOYBOX_DEBUG
 	  Enable extra checks for debugging purposes. All of them catch
 	  things that can only go wrong at development time, not runtime.
 
+config TOYBOX_PEDANTIC_ARGS
+	bool "Pedantic argument checking"
+	default n
+	help
+	  Check arguments for commands that have no arguments.
+
 config TOYBOX_UID_SYS
 	int "First system UID"
 	default 100
diff --git a/lib/toyflags.h b/lib/toyflags.h
index e809901d..859cca2e 100644
--- a/lib/toyflags.h
+++ b/lib/toyflags.h
@@ -28,3 +28,9 @@
 
 // Suppress default --help processing
 #define TOYFLAG_NOHELP   (1<<9)
+
+#if CFG_TOYBOX_PEDANTIC_ARGS
+#define NO_ARGS ">0"
+#else
+#define NO_ARGS 0
+#endif
diff --git a/scripts/make.sh b/scripts/make.sh
index 6b853840..57928471 100755
--- a/scripts/make.sh
+++ b/scripts/make.sh
@@ -182,6 +182,7 @@ make_flagsh()
     else
       $SED '/USE_.*([^)]*)$/s/$/ __VA_ARGS__/' generated/config.h
     fi
+    echo '#include "lib/toyflags.h"'
     cat generated/newtoys.h
 
     # Run result through preprocessor, glue together " " gaps leftover from USE
diff --git a/toys/other/uptime.c b/toys/other/uptime.c
index 91887dfb..1acb39ef 100644
--- a/toys/other/uptime.c
+++ b/toys/other/uptime.c
@@ -5,7 +5,7 @@
  * Copyright 2013 Jeroen van Rijn <jvrnix@gmail.com>
 
 
-USE_UPTIME(NEWTOY(uptime, NULL, TOYFLAG_USR|TOYFLAG_BIN))
+USE_UPTIME(NEWTOY(uptime, NO_ARGS, TOYFLAG_USR|TOYFLAG_BIN))
 
 config UPTIME
   bool "uptime"