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

[sgt-puzzles.git] / unfinished / slide.c

diff --git a/unfinished/slide.c b/unfinished/slide.c
index 05a3f8bb2dc5537186f863d1565afdca2ceab933..9770013235a4d12348db8c1f1e0a13000499ef1d 100644 (file)
--- a/unfinished/slide.c
+++ b/unfinished/slide.c
@@ -273,7 +273,7 @@ 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->w > MAXWID)
        return "Width must be at most " STR(MAXWID);
@@ -886,7 +886,7 @@ static char *new_game_desc(const game_params *params, random_state *rs,
     return ret;
 }
 
-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->w, h = params->h, wh = w*h;
     int *active, *link;
@@ -1121,7 +1121,7 @@ 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)
 {
     int *moves;
     int nmoves;