Improve assertions.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/lib_string.c b/src/lib_string.c
index 6b88ee9b..0d9290bc 100644
--- a/src/lib_string.c
+++ b/src/lib_string.c
@@ -136,7 +136,7 @@ LJLIB_CF(string_dump)
 /* ------------------------------------------------------------------------ */
 
 /* macro to `unsign' a character */
-#define uchar(c)        ((unsigned char)(c))
+#define uchar(c)        ((unsigned char)(c))
 
 #define CAP_UNFINISHED  (-1)
 #define CAP_POSITION    (-2)
@@ -645,7 +645,7 @@ static GCstr *string_fmt_tostring(lua_State *L, int arg, int retry)
 {
   TValue *o = L->base+arg-1;
   cTValue *mo;
-  lua_assert(o < L->top);  /* Caller already checks for existence. */
+  lj_assertL(o < L->top, "bad usage");  /* Caller already checks for existence. */
   if (LJ_LIKELY(tvisstr(o)))
     return strV(o);
   if (retry != 2 && !tvisnil(mo = lj_meta_lookup(L, o, MM_tostring))) {
@@ -717,7 +717,7 @@ again:
         lj_strfmt_putptr(sb, lj_obj_ptr(L->base+arg-1));
         break;
       default:
-        lua_assert(0);
+        lj_assertL(0, "bad string format type");
         break;
       }
     }