Question

急！在MFC中出现 (msvcr100d.dll) 处有未经处理的异常: 0xC0000005: 写入位置 0x001ee07c 时发生访问冲突

int code,i=0,j=0,k=0;
char suffix[6]=".dxf";
strcat("filename",suffix);
dxf=fopen("filename","r");
if (dxf==NULL)
{
exit(0);
}
entity=entity2=(EntityData*)malloc(DATASIZE);
while (feof(dxf)==0)
{fscanf_s (dxf,"%d",&code);
fscanf_s (dxf,"%s",codevalue);
if (code==2 && strcmp(codevalue,"ENTITIES")==0)
{ while (strcmp(codevalue,"ENDSEC"))
{ fscanf_s (dxf,"%d",&code);
fscanf_s (dxf,"%s",&codevalue);
if (code==0 && strcmp(codevalue,"LINE")==0)
{ entity1=(EntityData*)malloc(DATASIZE);
strcpy_s(entity1->id,codevalue);
fscanf_s(dxf,"%d",&code);
while (code)
{switch (code)
{case 10:
fscanf_s(dxf,"%f",&value);
fscanf_s(dxf,"%d",&code);
entity1->data.line.X1=value;
break;
case 20:
fscanf_s(dxf,"%f",&value);
fscanf_s(dxf,"%d",&code);
entity1->data.line.Y1=value;
break;
case 11:
fscanf_s(dxf,"%f",&value);
fscanf_s(dxf,"%d",&code);
entity1->data.line.X2=value;
break;
case 21:
fscanf_s(dxf,"%f",&value);
fscanf_s(dxf,"%d",&code);
entity1->data.line.Y2=value;
break;
default:
{fscanf_s(dxf,"%s",codevalue);
fscanf_s(dxf,"%d",&code);
}
}
}
entity2->next=entity1;
entity2=entity1;
}

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Answer 1

这应该是引用空指针引起的，建议设置断点跟踪调试。

追问

我在C++6.0里能够运行，怎么到VS2010中会出现问题，这个问题我好像给解决了，但是运行
strcmp(pointer->id,"LINE")是又出现
CAM.exe 中的 0x57bad484 (msvcr100d.dll) 处有未经处理的异常: 0xC0000005: 读取位置 0xcdcdcdcd 时发生访问冲突
这是怎么回事？？？

追答

会不会是这个库的原因msvcr100d.dll。试一试使用vc6进行静态链接再运行看一看。