如何避免“编译器限制：编译器堆栈溢出”与大矢量inits？ [英] How to avoid "compiler limit: compiler stack overflow" with large vector inits?

问题描述

在我的单元测试中，我得到以下编译器错误：

In my unit tests I get the following compiler error:

 The error message indicates as follows: 
 'fatal error C1063: compiler limit: compiler stack overflow'

这是由一些生成的标题包含：

This is caused by some generated headers which contain:

std::vector<unsigned char> GetTestData()
{
     return { 0x1, 0x2, 0x3 }; // Very large 500kb of data
}

崩溃MSVC？注意，代码在clang和gcc中构建OK。

How can I use vectors in this way without crashing MSVC? Note that the code builds OK in clang and gcc.

推荐答案

尝试将数据放入一个const静态数组，然后使用向量的范围ctor：

Try putting your data into a const static array and then use vector's range ctor:

std::vector<unsigned char> GetTestData()
{
    static const unsigned char data[] = { 
        0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0x0,
             ...
    }; // Very large 500kb of data

    return std::vector<unsigned char>(data, data + sizeof(data));
}

编辑：感谢Lundin指出const。

Thanks Lundin for pointing out about const.

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