进入main()之前的堆栈溢出异常

Question

当用vs2010编译(和执行)这个c ++代码时,我甚至在它甚至可以向控制台一瞥"Start"之前就得到了一个堆栈溢出异常.

所有我使用的标题,文件都包含在stdafx.h中,但(包括标题,文件直接当同样的问题),这里显然不是问题.

堆栈跟踪如下:

>   msvcr100d.dll!__set_flsgetvalue()  Zeile 145 + 0xc Bytes    C
    msvcr100d.dll!_getptd_noexit()  Zeile 500   C
    msvcr100d.dll!_getptd()  Zeile 523 + 0x5 Bytes  C
    msvcr100d.dll!_LocaleUpdate::_LocaleUpdate(localeinfo_struct * plocinfo)  Zeile 243 + 0x5 Bytes C++
    003efe3c()  
    TerrainGenerator.exe!pre_cpp_init()  Zeile 298 + 0x21 Bytes C

任何帮助都将非常感激,我是c ++的绝对初学者,正如你可能在代码风格中看到的那样,我尝试了一切以摆脱这个恼人的问题,例如甚至没有声明一个额外的功能等等. ..请帮助我,不要犹豫,询问您是否需要其他信息.提前致谢.

#include "stdafx.h"

int main(int argc, char* argv[])
{
    puts("Start");

    const int res = 4096;
    srand(time(NULL));

    uint16_t data[(res+1)*(res+1)];

    uint16_t variance = 2000;
    int seed = 1337;

    data[0] = ((seed>>1)+(int)(rand()/(RAND_MAX*(seed+(seed>>1)))));
    data[res] = ((seed>>1)+(int)(rand()/(RAND_MAX*(seed+(seed>>1)))));
    data[res*res] = ((seed>>1)+(int)(rand()/(RAND_MAX*(seed+(seed>>1)))));
    data[res*(res+1)] = ((seed>>1)+(int)(rand()/(RAND_MAX*(seed+(seed>>1)))));

    int count = 0;
    for(int size=res;size>=1;size=size>>1,variance=variance>>1)
    {
        count++;
        for(int x=size;x<res;x+=size<<1) 
        {
            for(int y=size;y<res;y+=size<<1) 
            {
                data[x*res+y] = data[(x-size)*res+(y-size)] + data[(x-size)*res+(y+size)] + data[(x+size)*res+(y-size)] + data[(x+size)*res+(y+size)];
                data[x*res+y] /= 4;
                data[x*res+y] += (variance>data[x*res+y])?(-(data[x*res+y]^2/variance)+(int)(rand()/(RAND_MAX*(data[x*res+y]^2/variance)))):(-variance+(int)(rand()/(RAND_MAX*variance*2)));
            }
        }

        for(int x=0;x<res;x+=size)
        {
            for(int y=0;y<res;y+=size)
            {
                if(x!=res-1)
                {
                    data[(x+(size>>1))*res+y] = data[x*res+y] + data[(x+size)*res+y] + ((y!=res-1)?data[(x+(size>>1))*res+(y+(size>>1))]:0) + ((y!=0)?data[(x+(size>>1))*res+(y-(size>>1))]:0);
                    data[(x+(size>>1))*res+y] /= (y!=res-1&&y!=0)?4:3;
                    data[(x+(size>>1))*res+y] += (variance>data[(x+(size>>1))*res+y])?((-(data[(x+(size>>1))*res+y]^2/variance)+(int)(rand()/(RAND_MAX*(data[(x+(size>>1))*res+y]^2/variance))))):(-variance+(int)(rand()/(RAND_MAX*variance*2)));
                }
                if(y!=res-1)
                {
                    data[x*res+(y+(size>>1))] = data[x*res+y] + data[x*res+(y+size)] + ((x!=res-1)?data[(x+(size>>1))*res+(y+(size>>1))]:0) + ((x!=0)?data[(x-(size>>1))*res+(y+(size>>1))]:0);
                    data[x*res+(y+(size>>1))] /= (x!=res-1&&x!=0)?4:3;
                    data[x*res+(y+(size>>1))] += (variance>data[x*res+(y+(size>>1))])?((-(data[x*res+(y+(size>>1))]^2/variance)+(int)(rand()/(RAND_MAX*(data[x*res+(y+(size>>1))]^2/variance))))):(-variance+(int)(rand()/(RAND_MAX*variance*2)));
                }
            }
        }
    }

    size_t Count = res*res;
    uint16_t* Block = data;
    char* Path = "export.raw";

    if(!Block) return false;
    FILE * filePointer = NULL;
    errno_t error = fopen_s(&filePointer, Path, "wb");
    if(error) return false;
    fwrite(Block, sizeof(uint16_t), Count, filePointer);
    fclose(filePointer);
    return true;

    return 0;
}

Answer 1

问题是

uint16_t data[(res+1)*(res+1)]; 

它是一个16 MB +的本地数组,太大而无法放入堆栈(通常为1 MB) - 您必须在堆中使用new语句创建它:

uint16_t* data = new uint16_t[(res+1)*(res+1)]; 

然后记得在delete不再需要时用声明取消分配它:

delete[] data;