From 28ef1abc10cfbc2c3d2747c008eb2300858d0426 Mon Sep 17 00:00:00 2001 From: Lorry Tar Creator Date: Fri, 22 Apr 2016 04:38:07 +0000 Subject: grep-2.25 --- gnulib-tests/test-environ.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 gnulib-tests/test-environ.c (limited to 'gnulib-tests/test-environ.c') diff --git a/gnulib-tests/test-environ.c b/gnulib-tests/test-environ.c new file mode 100644 index 0000000..0047246 --- /dev/null +++ b/gnulib-tests/test-environ.c @@ -0,0 +1,44 @@ +/* Test of environ variable. + Copyright (C) 2008-2016 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +/* Written by Bruno Haible , 2008. */ + +#include + +#include + +#include + +int +main () +{ + /* The environment variables that are set even in the weirdest situations + are HOME and PATH. + POSIX says that HOME is initialized by the system, and that PATH may be + unset. But in practice it's more frequent to see HOME unset and PATH + set. So we test the presence of PATH. */ + char **remaining_variables = environ; + char *string; + + for (; (string = *remaining_variables) != NULL; remaining_variables++) + { + if (strncmp (string, "PATH=", 5) == 0) + /* Found the PATH environment variable. */ + return 0; + } + /* Failed to find the PATH environment variable. */ + return 1; +} -- cgit v1.2.1