C++手动扩栈

• 转载自 https://blog.csdn.net/WeYoungg/article/details/77645036

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G++

    #ifdef OPENSTACK
        int size = 128 << 20; // 64MB
        char *p = (char*)malloc(size) + size;
        #if (defined _WIN64) or (defined __unix)
            __asm__("movq %0, %%rsp\n" :: "r"(p));
        #else
            __asm__("movl %0, %%esp\n" :: "r"(p));
        #endif
    #endif

    #ifdef OPENSTACK
        exit(0);
    #else
        return 0;
    #endif
   

这一段加在main函数里，可以避免在dfs的时候递归太深而爆栈

C++
#pragma comment(linker, "/STACK:102400000,102400000")
加入到头文件的位置中可扩栈

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G++写入主程序本地Devc++调试可用，头文件扩栈似乎不可用