Fix gcc -Wwrite-strings warnings

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>

6 files changed, 18 insertions, 15 deletions

diff --git a/exec.c b/exec.c
index 0508cd3..dbcb669 100644
--- a/exec.c
+++ b/exec.c
@@ -280,7 +280,7 @@ PrintKeyTable(Bool exprs, FILE *fp)
 	    max--;
 	for (j = 0; j <= max; j++) {
 	    register KeySym ks = keymap[j];
-	    char *s;
+	    const char *s;
 	    if (ks != NoSymbol)
 		s = XKeysymToString (ks);
 	    else
diff --git a/handle.c b/handle.c
index af2f5df..3f05a46 100644
--- a/handle.c
+++ b/handle.c
@@ -144,7 +144,7 @@ static int skip_chars ( const char *s, int len );
 static int skip_space ( const char *s, int len );
 
 static struct dt {
-    char *command;			/* name of input command */
+    const char *command;		/* name of input command */
     int length;				/* length of command */
     void (*proc)(char *, int);		/* handler */
 } dispatch_table[] = {
@@ -277,7 +277,7 @@ add_to_work_queue(union op *p)	/* this can become a macro someday */
 static Bool 
 parse_number(const char *str, unsigned long *val)
 {
-    char *fmt = "%ld";
+    const char *fmt = "%ld";
 
     if (*str == '0') {
 	str++;
@@ -324,7 +324,7 @@ static void
 do_keycode(char *line, int len)
 {
     int dummy;
-    char *fmt = "%d";
+    const char *fmt = "%d";
     KeyCode keycode;
 
     if (len < 3 || !line || *line == '\0') {  /* 5=a minimum */
diff --git a/pf.c b/pf.c
index cfb41b7..0cc8101 100644
--- a/pf.c
+++ b/pf.c
@@ -78,17 +78,19 @@ void process_file (const char *filename)	/* NULL means use stdin */
 }
 
 
-void process_line (char *buffer)
+void process_line (const char *line)
 {
     int len;
     int i;
-    char *cp;
-
-    /* copy buffer since it may point to unwritable date */
-    len = strlen(buffer);
-    cp = chk_malloc(len + 1);
-    strcpy(cp, buffer);
-    buffer = cp;
+    char *cp, *buffer;
+
+    /* copy line to buffer since it may point to unwritable data */
+    len = strlen(line);
+    cp = buffer = strdup(line);
+    if (buffer == NULL) {
+	fprintf(stderr, "%s: Could not allocate %d bytes\n", ProgramName, len);
+	Exit(-1);
+    }
     
     for (i = 0; i < len; i++) {		/* look for blank lines */
 	register char c = buffer[i];
diff --git a/wq.h b/wq.h
index f541b7c..58c062e 100644
--- a/wq.h
+++ b/wq.h
@@ -135,7 +135,7 @@ extern struct wq {
 
 
 extern struct modtab {
-    char *name;
+    const char *name;
     int length;
     int value;
 } modifier_table[];
diff --git a/xmodmap.c b/xmodmap.c
index 3d20e94..f49bc33 100644
--- a/xmodmap.c
+++ b/xmodmap.c
@@ -39,7 +39,7 @@ int min_keycode, max_keycode;
 Bool verbose = False;
 Bool dontExecute = False;
 
-static void 
+void
 _X_NORETURN
 Exit(int status)
 {
diff --git a/xmodmap.h b/xmodmap.h
index 5addd7b..1540b2a 100644
--- a/xmodmap.h
+++ b/xmodmap.h
@@ -37,7 +37,7 @@ extern int parse_errors;
 
 extern void initialize_map(void);
 extern void process_file(const char *filename);
-extern void process_line(char *buffer);
+extern void process_line(const char *buffer);
 extern void handle_line(char *line, int len);
 extern void print_work_queue(void);
 extern int execute_work_queue(void);
@@ -55,4 +55,5 @@ extern void PrintKeyTable(Bool exprs, FILE *fp);
 extern void PrintPointerMap(FILE *fp);
 extern int SetPointerMap(unsigned char *map, int n);
 
+extern void _X_NORETURN Exit(int status);
 extern void *chk_malloc(size_t n_bytes);