kc3-lang/gnulib/tests/test-unsetenv.c

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• Hash : 2d08d875
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  Date : 2024-11-17T13:05:55
  

  doc: Prefer https urls where possible.
  
  * doc/gnulib.texi (POSIXURL): Use https url.
  * doc/multithread.texi: Use https instead of http where possible.
  * doc/glibc-functions/*.texi: Likewise.
  * doc/posix-functions/*.texi: Likewise.
  * lib/glthread/lock.c: Likewise.
  * lib/hamt.h: Likewise.
  * lib/localcharset.c: Likewise.
  * lib/pipe2.c: Likewise.
  * lib/pipe.c: Likewise.
  * lib/sigsegv.c: Likewise.
  * lib/sigsegv.in.h: Likewise.
  * lib/sm3.c: Likewise.
  * lib/sm3.h: Likewise.
  * lib/sm3-stream.c: Likewise.
  * lib/stackvma.c: Likewise.
  * lib/stdio-impl.h: Likewise.
  * lib/stdnoreturn.in.h: Likewise.
  * m4/getopt.m4: Likewise.
  * m4/largefile.m4: Likewise.
  * m4/stdalign.m4: Likewise.
  * STATUS-libposix: Likewise.
  * tests/test-float.c: Likewise.
  * tests/test-getopt.h: Likewise.
  * tests/test-setenv.c: Likewise.
  * tests/test-spawn-pipe-child.c: Likewise.
  * tests/test-strerror.c: Likewise.
  * tests/test-strerror_r.c: Likewise.
  * tests/test-unsetenv.c: Likewise.
  * users.txt: Likewise.
  

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• tests/test-unsetenv.c

• /* Tests of unsetenv.
     Copyright (C) 2009-2024 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 <https://www.gnu.org/licenses/>.  */
  
  /* Written by Eric Blake <ebb9@byu.net>, 2009.  */
  
  #include <config.h>
  
  #include <stdlib.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (unsetenv, int, (char const *));
  
  #include <errno.h>
  #include <string.h>
  #include <unistd.h>
  
  #include "macros.h"
  
  int
  main (void)
  {
    /* Static to pacify gcc -Wanalyzer-putenv-of-auto-var.  */
    static char entry[] = "b=2";
  
    /* Test removal when multiple entries present.  */
    ASSERT (putenv ((char *) "a=1") == 0);
    ASSERT (putenv (entry) == 0);
    entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point.  */
    ASSERT (unsetenv ("a") == 0); /* Both entries will be removed.  */
    ASSERT (getenv ("a") == NULL);
    ASSERT (unsetenv ("a") == 0);
  
    /* Required to fail with EINVAL.  */
    errno = 0;
    ASSERT (unsetenv ("") == -1);
    ASSERT (errno == EINVAL);
    errno = 0;
    ASSERT (unsetenv ("a=b") == -1);
    ASSERT (errno == EINVAL);
  #if 0
    /* glibc and gnulib's implementation guarantee this, but POSIX no
       longer requires it: https://austingroupbugs.net/view.php?id=185  */
    errno = 0;
    ASSERT (unsetenv (NULL) == -1);
    ASSERT (errno == EINVAL);
  #endif
  
    return test_exit_status;
  }
  

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