new smatch

@@ -186,12 +186,39 @@
         }
 
         update_cache(name, is_file_local(array), rl);
 }
 
+static void mark_strings_unknown(const char *fn, struct expression *expr, void *_arg)
+{
+        struct expression *dest;
+        struct symbol *type;
+        int arg = PTR_INT(_arg);
+        char *name;
+
+        dest = get_argument_from_call_expr(expr->args, arg);
+        if (!dest)
+                return;
+        name = get_array_name(dest);
+        if (!name)
+                return;
+        type = get_type(dest);
+        if (type_is_ptr(type))
+                type = get_real_base_type(type);
+        update_cache(name, is_file_local(dest), alloc_whole_rl(type));
+}
+
 void register_array_values(int id)
 {
         my_id = id;
 
         add_hook(&match_assign, ASSIGNMENT_HOOK);
         add_hook(&match_assign, GLOBAL_ASSIGNMENT_HOOK);
+
+        add_function_hook("sprintf", &mark_strings_unknown, INT_PTR(0));
+        add_function_hook("snprintf", &mark_strings_unknown, INT_PTR(0));
+
+        add_function_hook("strcpy", &mark_strings_unknown, INT_PTR(0));
+        add_function_hook("strncpy", &mark_strings_unknown, INT_PTR(0));
+        add_function_hook("strlcpy", &mark_strings_unknown, INT_PTR(0));
+        add_function_hook("strscpy", &mark_strings_unknown, INT_PTR(0));
 }