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12345678910111213141516171819202122232425262728293031323334//// _freebuf.cpp//// Copyright (c) Microsoft Corporation. All rights reserved.//// Defines __acrt_stdio_free_buffer(), which releaes a buffer from a stream.//#include <corecrt_internal_stdio.h>
// Releases a buffer from a stream. If the stream is buffered and the buffer// was allocated by the CRT, the space is freed. If the buffer was provided by// the user, it is not freed (since we do not know how to free it).extern "C" void __cdecl __acrt_stdio_free_buffer_nolock(FILE* const public_stream){ _ASSERTE(public_stream != nullptr);
__crt_stdio_stream const stream(public_stream);
if (!stream.is_in_use()) return; if (!stream.has_crt_buffer()) return;
_free_crt(stream->_base);
stream.unset_flags(_IOBUFFER_CRT | _IOBUFFER_SETVBUF); stream->_base = nullptr; stream->_ptr = nullptr; stream->_cnt = 0;}