1 /* Test whether __func__ is available 2 Copyright (C) 2008-2021 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 /* Written by Bruno Haible <bruno@clisp.org>, 2008. */ 18 19 #include <config.h> 20 21 #include <string.h> 22 23 #include "macros.h" 24 25 int 26 main () /* */ 27 { 28 ASSERT (strlen (__func__) > 0); 29 30 /* On Oracle Developer Studio 12.6 and earlier, sizeof __func__ yields 0. 31 The compiler warns: "warning: null dimension: sizeof()". */ 32 #if !defined __SUNPRO_C 33 ASSERT (strlen (__func__) + 1 == sizeof __func__); 34 #endif 35 36 ASSERT (strcmp (__func__, "main") == 0 37 || strcmp (__func__, "<unknown function>") == 0); 38 39 return 0; 40 }