1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2017-2020 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18 #include <stdio.h> 19 #include <stdlib.h> 20 21 /* Wrapper around getenv for GDB. */ 22 23 static const char * 24 my_getenv (const char *name) 25 { 26 return getenv (name); 27 } 28 29 int 30 main (int argc, char *argv[]) 31 { 32 /* Call malloc to ensure it is linked in. */ 33 char *tmp = malloc (1); 34 /* Similarly call my_getenv instead of getenv directly to make sure 35 the former isn't optimized out. my_getenv is called by GDB. */ 36 const char *myvar = my_getenv ("GDB_TEST_VAR"); 37 38 if (myvar != NULL) 39 printf ("It worked! myvar = '%s'\n", myvar); 40 else 41 printf ("It failed."); 42 43 free (tmp); 44 return 0; /* break-here */ 45 } 46