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Re: $(( )): binary/unary VAR/NUM inconsistency
From: |
Andreas Schwab |
Subject: |
Re: $(( )): binary/unary VAR/NUM inconsistency |
Date: |
Wed, 06 Jul 2022 19:31:13 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.1.90 (gnu/linux) |
On Jul 06 2022, Steffen Nurpmeso wrote:
> $ bash -c 'I=10; echo $((1++I)); echo $I'
> bash: line 1: 1++I: syntax error in expression (error token is "++I")
> $ bash -c 'I=10; echo $((1++1)); echo $I'
> 10
>
> $ bash -c 'I=10;echo "<$(( +10+++I ))>"'
> <21>
A C compiler would parse all those expressions as post-increment applied
to a non-lvalue.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
- $(( )): binary/unary VAR/NUM inconsistency, Steffen Nurpmeso, 2022/07/06
- Re: $(( )): binary/unary VAR/NUM inconsistency,
Andreas Schwab <=
- Re: $(( )): binary/unary VAR/NUM inconsistency, Chet Ramey, 2022/07/07
- Re: $(( )): binary/unary VAR/NUM inconsistency, Steffen Nurpmeso, 2022/07/07
- Re: $(( )): binary/unary VAR/NUM inconsistency, Chet Ramey, 2022/07/08
- Re: $(( )): binary/unary VAR/NUM inconsistency, Steffen Nurpmeso, 2022/07/08
- Re: $(( )): binary/unary VAR/NUM inconsistency, Steffen Nurpmeso, 2022/07/08
- Re: $(( )): binary/unary VAR/NUM inconsistency, Chet Ramey, 2022/07/08
- Re: $(( )): binary/unary VAR/NUM inconsistency, Martin D Kealey, 2022/07/08
- Re: $(( )): binary/unary VAR/NUM inconsistency, Steffen Nurpmeso, 2022/07/09
- Re: $(( )): binary/unary VAR/NUM inconsistency, Robert Elz, 2022/07/08