diff options
Diffstat (limited to 'tests/unsetenv.c')
| -rw-r--r-- | tests/unsetenv.c | 50 |
1 files changed, 40 insertions, 10 deletions
diff --git a/tests/unsetenv.c b/tests/unsetenv.c index 73ea878..65a19cc 100644 --- a/tests/unsetenv.c +++ b/tests/unsetenv.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1992,1995-1999,2000-2002,2005-2008 Free Software Foundation, Inc. +/* Copyright (C) 1992, 1995-2002, 2005-2010 Free Software Foundation, Inc. This file is part of the GNU C Library. This program is free software: you can redistribute it and/or modify @@ -16,6 +16,10 @@ #include <config.h> +/* Don't use __attribute__ __nonnull__ in this compilation unit. Otherwise gcc + optimizes away the name == NULL test below. */ +#define _GL_ARG_NONNULL(params) + /* Specification. */ #include <stdlib.h> @@ -28,15 +32,15 @@ #include <unistd.h> #if !_LIBC -# define __environ environ +# define __environ environ #endif #if _LIBC /* This lock protects against simultaneous modifications of `environ'. */ # include <bits/libc-lock.h> __libc_lock_define_initialized (static, envlock) -# define LOCK __libc_lock_lock (envlock) -# define UNLOCK __libc_lock_unlock (envlock) +# define LOCK __libc_lock_lock (envlock) +# define UNLOCK __libc_lock_unlock (envlock) #else # define LOCK # define UNLOCK @@ -47,6 +51,7 @@ __libc_lock_define_initialized (static, envlock) # define unsetenv __unsetenv #endif +#if _LIBC || !HAVE_UNSETENV int unsetenv (const char *name) @@ -68,13 +73,13 @@ unsetenv (const char *name) while (*ep != NULL) if (!strncmp (*ep, name, len) && (*ep)[len] == '=') { - /* Found it. Remove this pointer by moving later ones back. */ - char **dp = ep; + /* Found it. Remove this pointer by moving later ones back. */ + char **dp = ep; - do - dp[0] = dp[1]; - while (*dp++); - /* Continue the loop in case NAME appears again. */ + do + dp[0] = dp[1]; + while (*dp++); + /* Continue the loop in case NAME appears again. */ } else ++ep; @@ -88,3 +93,28 @@ unsetenv (const char *name) # undef unsetenv weak_alias (__unsetenv, unsetenv) #endif + +#else /* HAVE_UNSETENV */ + +# undef unsetenv + +/* Call the underlying unsetenv, in case there is hidden bookkeeping + that needs updating beyond just modifying environ. */ +int +rpl_unsetenv (const char *name) +{ + int result = 0; + if (!name || !*name || strchr (name, '=')) + { + errno = EINVAL; + return -1; + } + while (getenv (name)) +# if !VOID_UNSETENV + result = +# endif + unsetenv (name); + return result; +} + +#endif /* HAVE_UNSETENV */ |