c - "Debug assertion failed"错误

Question

存在调试断言失败错误。有人能找到探测器吗？

Debug Assertion Failed !

Program:..
File:fclose.c
Line:47

Expression:(stream!=Null)

我正在 visual studio 中调试代码。

部分代码如下:

int __cdecl fclose (
        FILE *stream
        )
{
        int result = EOF;

        _VALIDATE_RETURN((stream != NULL), EINVAL, EOF);

        /* If stream is a string, simply clear flag and return EOF */
        if (stream->_flag & _IOSTRG)
                stream->_flag = 0;  /* IS THIS REALLY NEEDED ??? */

        /* Stream is a real file. */
        else {
                _lock_str(stream);
                __try {
                        result = _fclose_nolock(stream);
                }
                __finally {
                        _unlock_str(stream);
                }
        }

        return(result);
}

Answer 1

检查 fclose() 的调用者。不要向它提供 NULL FILE*。