39 	CHECK_DEPTH(env, 1, ">digit");  in to_digit()
46 	CHECK_DEPTH(env, 1, "hold");  in pic_hold()
60 	CHECK_DEPTH(env, 1, "u#>");  in pic_ustop()
70 	CHECK_DEPTH(env, 1, "u#");  in pic_unsigned()
82 	CHECK_DEPTH(env, 1, "sign");  in pic_sign()
93 	CHECK_DEPTH(env, 1, "u#s");  in pic_uremainder()
126 	CHECK_DEPTH(env, 1, "(.)");  in convert_num()
140 	CHECK_DEPTH(env, 2, ".r");  in do_dot_r()
156 	CHECK_DEPTH(env, 2, "u.r");  in do_udot_r()
165 	CHECK_DEPTH(env, 1, ".");  in do_dot()
175 	CHECK_DEPTH(env, 1, ".d");  in do_dot_d()
187 	CHECK_DEPTH(env, 1, ".x");  in do_dot_x()
197 	CHECK_DEPTH(env, 1, "u.");  in do_udot()
208 	CHECK_DEPTH(env, 2, "#");  in pic_dunsigned()
219 	CHECK_DEPTH(env, 2, "#s");  in pic_dremainder()
228 	CHECK_DEPTH(env, 2, "#>");  in pic_dstop()