XC8 IDE V4.10宏编译警告

嗨，AllI一直在做一个项目来创建一些旧的CCS代码到XC8的简化转换过程，并使用宏实现了几乎相同的代码，但是我想我已经发现了一个IDE错误，使用内联IF语句：{条件}？{true}：{false }；从我所看到的，我相信真正的条件是抛出一个错误的无代码错误，下面的例子将帮助其他人重现同样的错误：1）要编译的宏：WReg＝0：WReg＝1；这是宏发现故障的简单示例，结果在不同的输入条件下，如果存在编译问题，则移动（模式）＝0？与IF相同的行并删除结束，这被编辑在这里更容易阅读。2）真条件主“C”文件宏：Test-InLIF（0）；2.1）编译程序集：82：Test-InLIVIF（0）；07D7 0020 MOVLB 0x00 7D8 0189 CLRF WReGeTe完全符合预期。2.2）编译器警告：CCSYTest.C:82：警告：（759）表达式不生成代码，这是错误的错误消息警告，代码已正确生成。3）错误条件“C”文件宏：Test-InLIF（1）；3.1）编译程序集：82：Test-In LILIF（1）；07D6 3001 MOVLW 0x107D7 0020 MOVLB 0x00 7D8 0089 MOVWF WRGETEX是EX。编译器警告：完全没有警告，这是正确的。这不是一个编译器中断的问题，更麻烦的预编译器类型错误检测，我相信这对于IF {}，否则{}，Endif语句也是正确的。对于这个问题的任何反馈或未来计划修复都将是GRAA。虽然我不是一个很长时间的C程序员，但是我的汇编程序年能追溯到很多这样的烦心事，所以我希望我可以使用ASM StiLL。



      以下为原文

    Hi All

I have been working on a project to create a simplified conversion process for some old CCS code to XC8 and by using Macro's have achieved near identical code, however I think I have found an IDE fault using the inline IF statement:

  {condition}?{true}:{false};

From what I am seeing I believe the true condition is throwing a false no code error, the following examples will help anyone else reproduce the same fault:

1) The macro to be compiled:

#define test_inlineIF(mode)            
               (mode)==0?                  
               WREG=0:                       
               WREG=1;

This is a simple example of the macro found to fault, the results are below with the different input conditions, if there is an issue with compiling, move the (mode)==0? to the same line as the IF and remove the end , this was edited to be easier to read on here.


2) True condition Main 'C' file macro:
        test_inlineIF( 0 );

2.1) Compiled assembly:
82:             test_inlineIF( 0 );
07D7  0020     MOVLB 0x0
07D8  0189     CLRF WREG

This is exactly as expect.

2.2) Compiler Warning:
CCS_Test.c:82: warning: (759) expression generates no code

This I believe is the false error message warning, code has been produced correctly.


3) False condition Main 'C' file macro:
        test_inlineIF( 1 );

3.1) Compiled assembly:
82:             test_inlineIF( 1 );
07D6  3001     MOVLW 0x1
07D7  0020     MOVLB 0x0
07D8  0089     MOVWF WREG

This is exactly as expect.

3.2) Compiler Warning:
No warnings at all, which is correct.

This is not a compiler breaking issue, more of an annoying pre-compiler type error detection, I believe this is also true for the IF{}, ELSE{}, ENDIF statements.

Any feedback or future planned fix for this issue would be great to hear about, although I am not a long time 'C' programmer, my assembler years date back many and annoyances like this make me wish I could use ASM still.

Si.