rev: move a global variable to local scope

Mark also file names read-only.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

diff --git a/text-utils/rev.c b/text-utils/rev.c
index 84d116d8c364166631a8359839edabf47cd0496c..13a41f633e36d74db9dce9d445ae1248548f7bff 100644 (file)
--- a/text-utils/rev.c
+++ b/text-utils/rev.c
@@ -64,8 +64,6 @@
 #include "c.h"
 #include "closestream.h"
 
-static wchar_t *buf;
-
 static void sig_handler(int signo __attribute__ ((__unused__)))
 {
        _exit(EXIT_SUCCESS);
@@ -100,7 +98,8 @@ static void reverse_str(wchar_t *str, size_t n)
 
 int main(int argc, char *argv[])
 {
-       char *filename = "stdin";
+       char const *filename = "stdin";
+       wchar_t *buf;
        size_t len, bufsiz = BUFSIZ;
        FILE *fp = stdin;
        int ch, rval = EXIT_SUCCESS;