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a8b8514272
This causes use-after-free and double-free bugs when other environment functions are subsequently called.
39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2014.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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stdlib/clearenv.cpp
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Clear the environment and set environ to NULL.
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*******************************************************************************/
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#include <stdlib.h>
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#include <unistd.h>
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extern "C" int clearenv()
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{
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if ( environ == __environ_malloced )
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{
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for ( size_t i = 0; environ[i]; i++ )
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free(environ[i]);
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free(environ);
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__environ_malloced = NULL;
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}
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environ = NULL;
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return 0;
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}
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