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Re: Arithmetic expression: evaluation order bug
From: |
Steffen Nurpmeso |
Subject: |
Re: Arithmetic expression: evaluation order bug |
Date: |
Fri, 30 Dec 2022 00:21:52 +0100 |
User-agent: |
s-nail v14.9.24-383-g2889cb06b9 |
And, lastly (from my side)..
Steffen Nurpmeso wrote in
<20221229231538.Pz4j9%steffen@sdaoden.eu>:
...
|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)) ))
|
|I had tried that with clang (and now with gcc -Wall).
..i want to reiterate the relation to what "human logic" expects.
Now, the entire scene is often on the brainfuck (programming
language) side, nonetheless i, and the way all tested ISO
C compilers, and dash, and my evaluator do it, would hope in the
sense of "what comes natural"ly, that my point of view counts as
what "human logic" would expect.
Ciao,
--steffen
|
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
- Re: Arithmetic expression: evaluation order bug, (continued)
- Re: Arithmetic expression: evaluation order bug, Alain D D Williams, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Steffen Nurpmeso, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Alain D D Williams, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Andreas Schwab, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Steffen Nurpmeso, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Andreas Schwab, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Steffen Nurpmeso, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Andreas Schwab, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Steffen Nurpmeso, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Steffen Nurpmeso, 2022/12/29
- Re: Arithmetic expression: evaluation order bug,
Steffen Nurpmeso <=
- Re: Arithmetic expression: evaluation order bug, Greg Wooledge, 2022/12/29
- Re: Arithmetic expression: evaluation order bug, Steffen Nurpmeso, 2022/12/30
- Re: Arithmetic expression: evaluation order bug, Alain D D Williams, 2022/12/30
- Re: Arithmetic expression: evaluation order bug, Robert Elz, 2022/12/30
- Re: Arithmetic expression: evaluation order bug, Steffen Nurpmeso, 2022/12/30
- Re: Arithmetic expression: evaluation order bug, Robert Elz, 2022/12/30