preparatory patch for -Wwrite-strings #1

coreutils/cat.c

@@ -14,7 +14,7 @@
 
 int bb_cat(char **argv)
 {
-	static char *const argv_dash[] = { "-", NULL };
+	static const char *const argv_dash[] = { "-", NULL };
 	FILE *f;
 	int retval = EXIT_SUCCESS;
 

coreutils/date.c

@@ -41,7 +41,7 @@ static void xputenv(char *s)
 static void maybe_set_utc(int opt)
 {
 	if (opt & DATE_OPT_UTC)
-		xputenv("TZ=UTC0");
+		xputenv((char*)"TZ=UTC0");
 }
 
 int date_main(int argc, char **argv)
@@ -218,7 +218,7 @@ format_utc:
 			i = 22;
 			goto format_utc;
 		} else /* default case */
-			date_fmt = "%a %b %e %H:%M:%S %Z %Y";
+			date_fmt = (char*)"%a %b %e %H:%M:%S %Z %Y";
 	}
 
 	if (*date_fmt == '\0') {
@@ -228,7 +228,7 @@ format_utc:
 		/* Handle special conversions */
 
 		if (strncmp(date_fmt, "%f", 2) == 0) {
-			date_fmt = "%Y.%m.%d-%H:%M:%S";
+			date_fmt = (char*)"%Y.%m.%d-%H:%M:%S";
 		}
 
 		/* Generate output string */

coreutils/du.c

@@ -222,7 +222,7 @@ int du_main(int argc, char **argv)
 	/* go through remaining args (if any) */
 	argv += optind;
 	if (optind >= argc) {
-		*--argv = ".";
+		*--argv = (char*)".";
 		if (slink_depth == 1) {
 			slink_depth = 0;
 		}

coreutils/expr.c

@@ -67,8 +67,8 @@ static char **args;
 static VALUE *docolon(VALUE * sv, VALUE * pv);
 static VALUE *eval(void);
 static VALUE *int_value(arith_t i);
-static VALUE *str_value(char *s);
-static int nextarg(char *str);
+static VALUE *str_value(const char *s);
+static int nextarg(const char *str);
 static int null(VALUE * v);
 static int toarith(VALUE * v);
 static void freev(VALUE * v);
@@ -110,7 +110,7 @@ static VALUE *int_value(arith_t i)
 
 /* Return a VALUE for S.  */
 
-static VALUE *str_value(char *s)
+static VALUE *str_value(const char *s)
 {
 	VALUE *v;
 
@@ -172,7 +172,7 @@ static int toarith(VALUE * v)
 /* Return nonzero if the next token matches STR exactly.
    STR must not be NULL.  */
 
-static int nextarg(char *str)
+static int nextarg(const char *str)
 {
 	if (*args == NULL)
 		return 0;

coreutils/fold.c

@@ -66,7 +66,7 @@ int fold_main(int argc, char **argv)
 
 	argv += optind;
 	if (!*argv) {
-		*--argv = "-";
+		*--argv = (char*)"-";
 	}
 
 	do {

coreutils/head.c

@@ -92,7 +92,7 @@ int head_main(int argc, char **argv)
 
 	argv += optind;
 	if (!*argv) {
-		*--argv = "-";
+		*--argv = (char*)"-";
 	}
 
 	fmt = header_fmt_str + 1;

coreutils/ln.c

@@ -26,7 +26,7 @@ int ln_main(int argc, char **argv)
 	char *last;
 	char *src_name;
 	char *src;
-	char *suffix = "~";
+	char *suffix = (char*)"~";
 	struct stat statbuf;
 	int (*link_func)(const char *, const char *);
 

coreutils/md5_sha1_sum.c

@@ -102,7 +102,7 @@ int md5_sha1_sum_main(int argc, char **argv)
 	}
 
 	if (argc == optind) {
-		argv[argc++] = "-";
+		argv[argc++] = (char*)"-";
 	}
 
 	if (ENABLE_FEATURE_MD5_SHA1_SUM_CHECK && (flags & FLAG_CHECK)) {

coreutils/printf.c

@@ -42,11 +42,11 @@
 
 static int print_formatted(char *format, int argc, char **argv);
 static void print_direc(char *start, size_t length,
-			int field_width, int precision, char *argument);
+		int field_width, int precision, const char *argument);
 
-typedef void (*converter)(char *arg, void *result);
+typedef void (*converter)(const char *arg, void *result);
 
-static void multiconvert(char *arg, void *result, converter convert)
+static void multiconvert(const char *arg, void *result, converter convert)
 {
 	char s[16];
 	if (*arg == '"' || *arg == '\'') {
@@ -58,15 +58,15 @@ static void multiconvert(char *arg, void *result, converter convert)
 		fputs(arg, stderr);
 }
 
-static void conv_strtoul(char *arg, void *result)
+static void conv_strtoul(const char *arg, void *result)
 {
 	*(unsigned long*)result = bb_strtoul(arg, NULL, 10);
 }
-static void conv_strtol(char *arg, void *result)
+static void conv_strtol(const char *arg, void *result)
 {
 	*(long*)result = bb_strtol(arg, NULL, 10);
 }
-static void conv_strtod(char *arg, void *result)
+static void conv_strtod(const char *arg, void *result)
 {
 	char *end;
 	/* Well, this one allows leading whitespace... so what */
@@ -75,21 +75,21 @@ static void conv_strtod(char *arg, void *result)
 	if (end[0]) errno = ERANGE;
 }
 
-static unsigned long my_xstrtoul(char *arg)
+static unsigned long my_xstrtoul(const char *arg)
 {
 	unsigned long result;
 	multiconvert(arg, &result, conv_strtoul);
 	return result;
 }
 
-static long my_xstrtol(char *arg)
+static long my_xstrtol(const char *arg)
 {
 	long result;
 	multiconvert(arg, &result, conv_strtol);
 	return result;
 }
 
-static double my_xstrtod(char *arg)
+static double my_xstrtod(const char *arg)
 {
 	double result;
 	multiconvert(arg, &result, conv_strtod);
@@ -239,7 +239,7 @@ static int print_formatted(char *format, int argc, char **argv)
 
 static void
 print_direc(char *start, size_t length, int field_width, int precision,
-			char *argument)
+		const char *argument)
 {
 	char *p;		/* Null-terminated copy of % directive. */
 

coreutils/tail.c

@@ -91,7 +91,7 @@ int tail_main(int argc, char **argv)
 	if (argc >= 2 && (argv[1][0] == '+' || argv[1][0] == '-')
 	 && isdigit(argv[1][1])
 	) {
-		argv[0] = "-n";
+		argv[0] = (char*)"-n";
 		argv--;
 		argc++;
 	}

coreutils/yes.c

@@ -22,7 +22,7 @@ int yes_main(int argc, char **argv)
 	const char *fmt;
 	char **first_arg;
 
-	*argv = "y";
+	*argv = (char*)"y";
 	if (argc != 1) {
 		++argv;
 	}