以上来源于: WordNet
Edit: you're also causing undefined behavior in several places in your program.
编辑：你也导致未定义的行为在你的程序中的几个地方。
Multiple compound assignments in a single statement: is it Undefined Behavior or not?
多个复合作业在一个声明：未定义的行为或不呢？
Attempting to unlock a mutex locked by a different thread results in undefined behavior.
尝试解除由其他线程锁定的互斥锁会产生不确定的行为。
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