tmpnam是C语言中用于产生一个唯一的文件名。
In fact, tmpnam (3) isn't reliable with threads and doesn't handle loops reliably, so it should never be used.
实际上，线程使用tmpnam(3)并不可靠，也不能可靠地处理循环，所以永远不要使用它。
Some programs just call mktemp (3) or tmpnam (3) directly to create a temporary file name, and then simply open it under the assumption that it'll be OK.
有一些程序只是直接调用mktemp(3)或tmpnam(3)来创建临时文件，然后基于这样做会成功的假定去简单地打开它。
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