英特尔C ++编译器，当非const参数作为常量参数传递警告167 [英] Intel C++ Compiler warning 167 when non-const argument is passed as const parameter

问题描述

我有一个大codeBase的，最近从微软的编译器的英特尔C ++编译感动。我们团队的目标是无主线警告编译。由于开关，警告167的一个实例已经困惑了我。如果我编译以下code：

I have a large codebase that recently moved from Microsoft's compiler to the Intel C++ Compiler. Our team's goal is compilation without warnings in the mainline. Since the switch, one instance of warning 167 has confounded me. If I compile the following code:

int foo(const int pp_stuff[2][2])
{
   return 0;
}

int foo2(const int pp_stuff[][2])
{
    return 0;
}


int main(void)
{
    int stuff[2][2] = {{1,2},{3,4}};

    foo(stuff);
    foo2(stuff);

    return 0;
}

国际刑事法院会给我警告：

The ICC will give me warnings:

1>main.c(17): warning #167: argument of type "int (*)[2]" is incompatible with parameter of type "const int (*)[2]"
1>        foo(stuff);
1>            ^
1>  
1>main.c(18): warning #167: argument of type "int (*)[2]" is incompatible with parameter of type "const int (*)[2]"
1>        foo2(stuff);

为什么这应该是一个警告？通常的作法是通过一个非const变量作为常量参数和类型＆放大器;尺寸是相同的。

Why should this be a warning? It is common practice to pass a non-const variable as a const parameter, and the types & dimensions are identical.

对于那些谁标志着这个重复的问题，我劝你三思。如果别人遇到这样的警告，他们必须知道，在C参数在原型的功能转换，如果通过转让，然后搜索一个问题，是关于严格分配。尽管答案最终被从C90 / C99相同的条款，问题是，我认为，pretty不同。

To those who have marked this a duplicate question, I urge you to reconsider. If someone else encounters this warning, they would have to know that in C arguments are converted as if by assignment in prototyped functions, and then search for a question that is strictly about assignment. Even though the answer ends up being the same clause from C90/C99, the question is, I think, pretty different.

推荐答案

你要把你的变量，常量，当你把它传递到需要常量的功能。

Cast your variable as const when you pass it to the function that requires const.

foo( (const int (*)[2]) stuff );

为什么我不能传递一个char **到期望一个const char功能** ？

<一个href=\"http://stackoverflow.com/questions/14901183/intel-c-compiler-warning-167-when-non-const-argument-is-passed-as-const-parame\">Similar问题

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