GNU AS bug?

[Almos Rajnai]

Hello Dear Support,

I am involved in AmigaOS4 development in code very deep asm coding. 
We had been encouraged to use GNU packages (because of its 
completeness as a toolchain), therefore I had to convert my asm 
sources to GAS format.

While I fought with the macro conversions (I have tons of code 
generating macros) I found a bug(?):

GAS swallows some constants in .if structures. Please have a look at 
the attached sources and listings.
I found a workaround as you can see in gasbug_corr.asm source, but it 
was quite annoying, especially in nested macros to found where the 
problem is.

I tried every versions I had and all behaved the very same. (I found 
first in 2.9.1.)

So is it a "bug" or a "feature"? :)

I hope my error report will help.

Bye,


     Almos Rajnai

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  ----- http://amigos.amiga.hu/rachy/ -----
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   ---- File information -----------
     File:  gasbug.asm
     Date:  1 Jun 2003, 10:33
     Size:  85 bytes.
     Type:  Program-source

gasbug.asm
Description: Binary data

GAS LISTING gasbug.asm                  page 1


   1                    
   2                            .set    TFLAG_C, 1
   3                    
   4                            .macro  check
   5                    
   6                            .if     (0 & TFLAG_C)
   7                            .endif
   8                    
   9                            .endm
  10                    
  11                            .text
  12                            check
  12                    > .if (0&)
  12                    > .endif
  13

The following section of this message contains a file attachment
prepared for transmission using the Internet MIME message format.
If you are using Pegasus Mail, or any another MIME-compliant system,
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   ---- File information -----------
     File:  gasbug_corr.asm
     Date:  1 Jun 2003, 10:33
     Size:  87 bytes.
     Type:  Program-source

gasbug_corr.asm
Description: Binary data

GAS LISTING gasbug_corr.asm                     page 1


   1                    
   2                            .set    TFLAG_C, 1
   3                    
   4                            .macro  check
   5                    
   6                            .if     (0 & (TFLAG_C))
   7                            .endif
   8                    
   9                            .endm
  10                    
  11                            .text
  12                            check
  12                    > .if (0&(TFLAG_C))
  12                    > .endif
  13