Re: Arithmetic expression: evaluation order bug

[Alain D D Williams]

On Fri, Dec 30, 2022 at 12:15:38AM +0100, Steffen Nurpmeso wrote:
> Ah, wait..
> 
> Alain D D Williams wrote in
>  <20221229215700.GD16276@phcomp.co.uk>:
>  ...
>  |Anyway: back to what the shell should be doing. You cannot put a ';' \
>  |into (( ))
>  |as a sequence point, but the manual does say:
>  |
>  |"Sub-expressions in parentheses are evaluated first and may override the
>  |precedence rules above"
>  |
>  |So use sub-expressions to 'evaluate first' so you should prolly rewrite:
>  |
>  |(( i += j += i += i ))
>  |
>  |as:
>  |
>  |(( i += (j += (i += i)) ))
> 
> I had tried that with clang (and now with gcc -Wall).

My quote from "the manual" is the bash manual (version 5.0.3 on Debian 10
(Buster)) so the 'evaluate first' applies to bash not the C language. Please
understand that different languages might do things differently.

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Alain Williams
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