回答編集履歴
1
ソース追記
test
CHANGED
|
@@ -3,3 +3,63 @@
|
|
|
3
3
|
[構造体パッキング](http://tool-support.renesas.com/autoupdate/support/onlinehelp/ja-JP/csp/V4.01.00/CS+.chm/Compiler-CCRH.chm/Output/ccrh04c0204y0800.html)
|
|
4
4
|
|
|
5
5
|
[前へならえ](http://www7b.biglobe.ne.jp/~robe/cpphtml/html03/cpp03014.html)
|
|
6
|
+
|
|
7
|
+
//
|
|
8
|
+
|
|
9
|
+
```c
|
|
10
|
+
|
|
11
|
+
struct abc {
|
|
12
|
+
|
|
13
|
+
int A;
|
|
14
|
+
|
|
15
|
+
int B;
|
|
16
|
+
|
|
17
|
+
int C;
|
|
18
|
+
|
|
19
|
+
char D;
|
|
20
|
+
|
|
21
|
+
};
|
|
22
|
+
|
|
23
|
+
//
|
|
24
|
+
|
|
25
|
+
int main(void)
|
|
26
|
+
|
|
27
|
+
{
|
|
28
|
+
|
|
29
|
+
struct abc val;
|
|
30
|
+
|
|
31
|
+
|
|
32
|
+
|
|
33
|
+
return 0;
|
|
34
|
+
|
|
35
|
+
}
|
|
36
|
+
|
|
37
|
+
|
|
38
|
+
|
|
39
|
+
```
|
|
40
|
+
|
|
41
|
+
上記コードで、以下のワーニングがでます。VCはわからないのですがエラーの設定で最強のエラーチェックにすれば出るのではないかと？
|
|
42
|
+
|
|
43
|
+
```text
|
|
44
|
+
|
|
45
|
+
usr ~/Project/test % clang -Weverything st.c
|
|
46
|
+
|
|
47
|
+
st.c:10:16: warning: unused variable 'val' [-Wunused-variable]
|
|
48
|
+
|
|
49
|
+
struct abc val;
|
|
50
|
+
|
|
51
|
+
^
|
|
52
|
+
|
|
53
|
+
st.c:1:8: warning: padding size of 'struct abc' with 3 bytes to alignment boundary [-Wpadded]
|
|
54
|
+
|
|
55
|
+
struct abc {
|
|
56
|
+
|
|
57
|
+
^
|
|
58
|
+
|
|
59
|
+
2 warnings generated.
|
|
60
|
+
|
|
61
|
+
usr ~/Project/test %
|
|
62
|
+
|
|
63
|
+
|
|
64
|
+
|
|
65
|
+
```
|