Very often, tests are less complex than the eventual production environment, so a program can contain a memory corruption error that will wreak havoc after release even though the tests all pass.
十分普遍地情况是，测试环境并没有最终的产品环境复杂，因此即使测试都通过了，程序也能够包含一个在发布版本后即将引起严重破坏的内存崩溃性的错误。
That kind of off-by-one error might not cause your program to crash or your test to fail, but there is still memory corruption going on.
这种错误可能不会导致您的程序崩溃或者您的测试失败，但是仍然存在内存崩溃的危险。
Error detection: Runtime memory corruption in user code.
错误检测：用户模式下的运行时内存崩溃。
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