Stricter tokenization of datetime

src/expr.c

@@ -3061,6 +3061,7 @@ int DoCoerce(char type, Value *v)
 
 	case STR_TYPE:
 	    s = v->v.str;
+            i=0; /* Avoid compiler warning */
 	    if (ParseLiteralTime(&s, &i)) return E_CANT_COERCE;
 	    if (*s) return E_CANT_COERCE;
 	    v->type = TIME_TYPE;

src/token.c

@@ -246,7 +246,14 @@ void FindNumericToken(char const *s, Token *t)
 	    int dse, tim;
             r = ParseLiteralDate(&p, &dse, &tim);
 	    if (r == OK) {
-		if (*p) return;
+		if (*p) {
+                    if (tim == NO_TIME) {
+                        t->val = -E_BAD_DATE;
+                    } else {
+                        t->val = -E_BAD_TIME;
+                    }
+                    return;
+                }
 		if (tim == NO_TIME) {
 		    t->type = T_Date;
 		    t->val = dse;