Return error messages as 'const char *', not 'char *'.

[sgt-puzzles.git] / netslide.c

diff --git a/netslide.c b/netslide.c
index 542b571c8534077268808a3863db97a95561e4db..aee597381b7364aea9108244b42f25349e25cee9 100644 (file)
--- a/netslide.c
+++ b/netslide.c
@@ -302,7 +302,7 @@ static game_params *custom_params(const config_item *cfg)
     return ret;
 }
 
-static char *validate_params(const game_params *params, int full)
+static const char *validate_params(const game_params *params, int full)
 {
     if (params->width <= 1 || params->height <= 1)
        return "Width and height must both be greater than one";
@@ -689,7 +689,7 @@ static char *new_game_desc(const game_params *params, random_state *rs,
     return desc;
 }
 
-static char *validate_desc(const game_params *params, const char *desc)
+static const char *validate_desc(const game_params *params, const char *desc)
 {
     int w = params->width, h = params->height;
     int i;
@@ -879,7 +879,7 @@ static void free_game(game_state *state)
 }
 
 static char *solve_game(const game_state *state, const game_state *currstate,
-                        const char *aux, char **error)
+                        const char *aux, const char **error)
 {
     if (!aux) {
        *error = "Solution not known for this puzzle";