如何在C ++中处理bad_alloc？ [英] How to deal with bad_alloc in C++?

问题描述

有一个名为 foo 的方法，有时会返回以下错误：

There is a method called foo that sometimes returns the following error:

terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc
Abort

有一种方法可以使用 try - catch 阻止停止此错误以终止我的程序（我想要做的是返回 -1 ）？

Is there a way that I can use a try-catch block to stop this error from terminating my program (all I want to do is return -1)?

如果是，其语法是什么？

If so, what is the syntax for it?

我如何处理 bad_alloc 在C ++中

How else can I deal with bad_alloc in C++?

推荐答案

你可以像任何其他异常一样捕获它：

You can catch it like any other exception:

try {
  foo();
}
catch (const std::bad_alloc&) {
  return -1;
}

从这一点上你可以有用地做什么取决于你，绝对可行的技术。

Quite what you can usefully do from this point is up to you, but it's definitely feasible technically.

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