使用指定的初始化时-Wmissing场初始值设定 [英] -Wmissing-field-initializer when using designated initializers
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问题描述
我使用GCC 4.6.2(称为Mingw)和 -Wextra
编译。我得到每当我使用指定初始化奇怪的警告。对于以下code
I'm using GCC 4.6.2 (Mingw) and compiling with -Wextra
. I'm getting strange warnings whenever I use designated initializers. For the following code
typedef struct
{
int x;
int y;
} struct1;
typedef struct
{
int x;
int y;
} struct2;
typedef struct
{
struct1 s1;
struct2 s2[4];
} bug_struct;
bug_struct bug_struct1 =
{
.s1.x = 1,
.s1.y = 2,
.s2[0].x = 1,
.s2[0].y = 2,
.s2[1].x = 1,
.s2[1].y = 2,
.s2[2].x = 1,
.s2[2].y = 2,
.s2[3].x = 1,
.s2[3].y = 2,
};
我收到警告
bug.c:24:3: warning: missing initializer [-Wmissing-field-initializers]
bug.c:24:3: warning: (near initialization for 'bug_struct1.s1.y') [-Wmissing-field-initializers]
那么到底缺什么?我已经初始化的每一个成员。这是警告只是太钝指定的初始化工作,我做错了什么,或者是一个编译器错误吗?
So what exactly is missing? I've initialized every member. Is this warning merely too blunt to work with designated initializers, am I doing something wrong, or is it a compiler bug?
推荐答案
看来,警告,就像你说的,太钝。
It seems that the warning is, as you say, "too blunt".
这种访问模式,初始化每个成员结构作为一个整体,以满足编译器:
This pattern of access, initializing each member struct as a whole, satisfies the compiler:
bug_struct bug_struct1 =
{
.s1 = {.x = 1, .y = 2},
.s2[0] = {.x = 1, .y = 2},
.s2[1] = {.x = 1, .y = 2},
.s2[2] = {.x = 1, .y = 2},
.s2[3] = {.x = 1, .y = 2}
};
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