英文:
Clang: How do I see where and why an ud2 instruction was generated?
问题
Clang在我的一个非常大的项目中似乎会在某些函数调用中插入ud2指令。然而，即使使用了-Wall选项，它似乎也没有告诉我原因。在该项目中，我非常频繁地使用协程，但ud2指令最终出现在非协程函数调用中。
提前感谢<br>
Tuxifan
英文:
In a really big project of mine, Clang seems to throw in ud2 instructions at some function calls. However, even with -Wall it doesn't seem to tell me why. I am using coroutines quite heavily in that project, but the ud2 instructions end up at non-coroutine function calls.
Thanks in advance<br>
Tuxifan
答案1
得分: 0
Clang将ud2指令放置在任何可能导致未定义行为的位置。这样做是不可行的。
英文:
Clang places ud2 instruction at whatever place that would be undefined behavior to reach. Doing this is not feasible.
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