gcc(gnu), clang(llvm)コンパイルエラー・警告比較(8) R_11_0x.c, docker(162) error(53)

やってきました。

gcc(gnu) clang(llvm)コンパイルエラー比較

長らくごぶさたしていました。

MISRA の解説書は有料ですが、Codeは無償であげてくれています。

MISRA C:2012 Example-Suite 
https://gitlab.com/MISRA/MISRA-C/MISRA-C-2012/Example-Suite

<この項は書きかけです。順次追記します。>
This article is not completed. I will add some words in order.
# 全体の記録

Misra Example Suite at docker コンパイル完了までの道のり
https://qiita.com/kaizen_nagoya/items/71f04a0204d5a1114577

順にコンパイルエラーが出たものを比較し、
エラーを取るのなら取ってみます。

-Wall でコンパイルしています。

R_11_0x.c

```
$ clang 
R_11_01.c:49:24: error: operand of type 'float' cannot be cast to a pointer type
   fp16 fp4 = ( fp16 ) 1.0e6F; /* Non-compliant  -   float to function pointer */
                       ^~~~~~
1 error generated.
R_11_04.c:27:20: warning: cast to 'uint8_t *' (aka 'unsigned char *') from smaller integer type 'int32_t' (aka 'int') [-Wint-to-pointer-cast]
   uint8_t  *q   = ( uint8_t * ) addr;      /* Non-compliant */
                   ^
1 warning generated.
R_11_06.c:28:19: error: operand of type 'float' cannot be cast to a pointer type
   p = ( void * ) 1024.0f;  /* Non-compliant - undefined              */
                  ^~~~~~~
1 error generated.
R_11_07.c:28:24: error: pointer cannot be cast to type 'float32_t' (aka 'float')
     f = ( float32_t ) p;          /* Non-compliant */
                       ^
R_11_07.c:29:24: error: operand of type 'float32_t' (aka 'float') cannot be cast to a pointer type
     p = ( int16_t * ) f;          /* Non-compliant */
                       ^
2 errors generated.
R_11_09.c:34:13: warning: unused variable 'p3' [-Wunused-variable]
   int32_t *p3 = MY_NULL_3;      /* Compliant     */
            ^
1 warning generated.

$ gcc 
R_11_01.c: In function 'R_11_1':
R_11_01.c:49:4: error: cannot convert to a pointer type
   49 |    fp16 fp4 = ( fp16 ) 1.0e6F; /* Non-compliant  -   float to function pointer */
      |    ^~~~
R_11_01.c:58:9: warning: unused variable 'fp5' [-Wunused-variable]
   58 |    fp16 fp5 = f1;           /* Compliant - exception */
      |         ^~~
R_11_01.c:49:9: warning: unused variable 'fp4' [-Wunused-variable]
   49 |    fp16 fp4 = ( fp16 ) 1.0e6F; /* Non-compliant  -   float to function pointer */
      |         ^~~
R_11_01.c:47:9: warning: unused variable 'fp3' [-Wunused-variable]
   47 |    fp16 fp3 = ( fp16 ) 0x8000; /* Non-compliant  - integer to function pointer */
      |         ^~~
R_11_04.c: In function 'R_11_4':
R_11_04.c:26:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   26 |    int32_t  addr = ( int32_t ) &p;          /* Non-compliant */
      |                    ^
R_11_04.c:27:20: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   27 |    uint8_t  *q   = ( uint8_t * ) addr;      /* Non-compliant */
      |                    ^
R_11_06.c: In function 'R_11_6':
R_11_06.c:28:4: error: cannot convert to a pointer type
   28 |    p = ( void * ) 1024.0f;  /* Non-compliant - undefined              */
      |    ^
R_11_06.c:30:8: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   30 |    u = ( uint32_t ) p;      /* Non-compliant - implementation-defined */
      |        ^
R_11_07.c: In function 'R_11_7':
R_11_07.c:28:6: error: pointer value used where a floating-point was expected
   28 |      f = ( float32_t ) p;          /* Non-compliant */
      |      ^
R_11_07.c:29:6: error: cannot convert to a pointer type
   29 |      p = ( int16_t * ) f;          /* Non-compliant */
      |      ^
R_11_09.c: In function 'R_11_9':
R_11_09.c:34:13: warning: unused variable 'p3' [-Wunused-variable]
   34 |    int32_t *p3 = MY_NULL_3;      /* Compliant     */
      |             ^~
In file included from clear_lib.c:10:
clear_lib.c: In function 'g':
clear_lib.c:263:6: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  263 |  PR1((int)p,d);
      |      ^
misra_c.h:66:54: note: in definition of macro 'PR1'
   66 | #define PR1(a,b) (void)printf(" "#a  " = %" #b "\n", a)
      |                                                      ^
clear_lib.c: In function 'use_const_volatile_char_ptr':
clear_lib.c:276:6: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  276 |  PR1((int)cv_cp,d);
      |      ^
misra_c.h:66:54: note: in definition of macro 'PR1'
   66 | #define PR1(a,b) (void)printf(" "#a  " = %" #b "\n", a)
      |                                                      ^

```
# docker hubでの作業
docker hubからの起動はこちら。

```
$ docker run it kaizenjapan/misra_c_2012_example /bin/bash
```

#参考資料

仮説・検証（173）C言語（C++)に対する誤解、曲解、無理解、爽快。

https://qiita.com/kaizen_nagoya/items/3f3992c9722c1cee2e3a

[C][C++]の国際規格案の例題をコンパイルするときの課題７つ。
https://qiita.com/kaizen_nagoya/items/5f4b155030259497c4de
C Puzzle Bookの有り難み5つ、C言語規格及びCコンパイラの特性を認識
https://qiita.com/kaizen_nagoya/items/d89a48c1536a02ecdec9
MISRA C まとめ #include 
https://qiita.com/kaizen_nagoya/items/f1a79a7cbd281607c7c9
どうやって MISRA Example Suiteをコンパイルするか
https://qiita.com/kaizen_nagoya/items/fbdbff5ff696e2ca7f00


ISO/IEC TS 17961:2013 C Secure Coding Rules(1) All list(to be confirmed)
https://qiita.com/kaizen_nagoya/items/54e056195c4f11b850a1

Autosar Guidelines C++14 example code compile list
https://qiita.com/kaizen_nagoya/items/8ccbf6675c3494d57a76

C++ N4741, N4606, N3242 Source Compile Error List
https://qiita.com/kaizen_nagoya/items/2e736e04339b340ffb4d

# 自己参照
Error一覧 error(0)
https://qiita.com/kaizen_nagoya/items/48b6cbc8d68eae2c42b8

プログラマが知っていると良い「公序良俗」
https://qiita.com/kaizen_nagoya/items/9fe7c0dfac2fbd77a945

Ethernet 記事一覧　Ethernet(0)
https://qiita.com/kaizen_nagoya/items/88d35e99f74aefc98794

Wireshark 一覧 wireshark(0)、Ethernet(48) 
https://qiita.com/kaizen_nagoya/items/fbed841f61875c4731d0

線網（Wi-Fi）空中線(antenna)(0) 記事一覧(118/300目標)
https://qiita.com/kaizen_nagoya/items/5e5464ac2b24bd4cd001

通信記事１００
https://qiita.com/kaizen_nagoya/items/1d67de5e1cd207b05ef7

一覧の一覧( The directory of directories of mine.) Qiita(100)
https://qiita.com/kaizen_nagoya/items/7eb0e006543886138f39

＜この記事は個人の過去の経験に基づく個人の感想です。現在所属する組織、業務とは関係がありません。＞
This article is an individual impression based on the individual's experience. It has nothing to do with the organization or business to which I currently belong.
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