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Re: Typo in bitset ops trigger compiler assertion


From: Gaius Mulley
Subject: Re: Typo in bitset ops trigger compiler assertion
Date: Thu, 17 Nov 2022 11:22:30 +0000
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux)

Runar Tenfjord <runar.tenfjord@gmail.com> writes:

> Hello,
>
> The following code trigger a compiler assertion:
>
>  MODULE test;
>  FROM libc IMPORT printf;
>
>  VAR
>      i : CARDINAL;
>  BEGIN
>      i := VAL(CARDINAL, VAL(BITSET, 0F0H) / (~VAL(BITSET, 0FH));
>      printf("i = %d\n", i);
>  END test.
>
> I discovered this accidently when testing the bit operations in the supplied 
> PIM library
> and did not get it to work correctly.
>
> There seems to be a type in the definition of XOR.
>
>  Line 114 in 'gcc/m2/gm2-libs-pim/BitByteOps.mod':
>
>  RETURN VAL (BYTE, VAL (BITSET8, left) DIV VAL (BITSET8, right))
>
>  
> Should be:
>
>  RETURN VAL (BYTE, VAL (BITSET8, left) / VAL (BITSET8, right)) 
>
> This  also to affect the other BitXXXOps files.

Hi Runar,

many thanks for the bug report - yes indeed verified the crash - and
will fix asap

regards,
Gaius



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