Re: [Bison-Announce] Bison 3.5.91 released [beta]

[Denis Excoffier]

> On 2020-05-02 07:23, Akim Demaille wrote:
> 
> Hi Dennis!
You mean Denis i suppose...
> 
> #include <config.h>
> #include <stdio.h>
> #include <locale.h>
> #include <wchar.h>
> #include "mbswidth.h"
> int main ()
> {
>  setlocale (LC_ALL, "en_US.UTF-8");
>  printf ("%d\n", (int) mbswidth ("{∇⃗×𝐸⃗ = -∂𝐵⃗/∂t}",0)); // 14 vs 17
>  printf ("%d\n", wcwidth (0x2207)); // 1 vs. 2
>  printf ("%d\n", wcwidth (0x20D7)); // 0
>  printf ("%d\n", wcwidth (0x00D7)); // 1
>  printf ("%d\n", wcwidth (0x1D438)); // 1
>  printf ("%d\n", wcwidth (0x2202)); // 1 vs. 2
>  printf ("%d\n", wcwidth (0x1D435)); // 1
> }
> 
> I suggest that you put it in your bison directory, and compile it this way:
> 
>> $ gcc foo.c -I _build/g9d/lib -I lib -L _build/g9d/lib -lbison
> 
> 
> (_build/g9d is my build tree)
> 
> FTR, I have:
> 
>> $ ./a.out
>> 14
>> 1
>> 0
>> 1
>> 1
>> 1
>> 1
> 

On cygwin:

% uname -sro
CYGWIN_NT-10.0-17763 3.1.5-340.x86_64.snap Cygwin
% gcc --version
gcc (GCC) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

% gcc -o foo1 foo1.c -I /tmp/lcl/tmp/bison/bison-3.5.91 -I lib -L 
/tmp/lcl/tmp/bison/bison-3.5.91 -L lib -l bison
foo1.c: In function 'main':
foo1.c:13:27: warning: unsigned conversion from 'int' to 'wchar_t’ {aka ‘const 
short unsigned int’} changes value from '119864' to '54328' [-Woverflow]
   13 |  printf ("%d\n", wcwidth (0x1D438)); // 1
      |                           ^~~~~~~
foo1.c:15:27: warning: unsigned conversion from 'int' to 'wchar_t’ {aka ‘const 
short unsigned int’} changes value from '119861' to '54325' [-Woverflow]
   15 |  printf ("%d\n", wcwidth (0x1D435)); // 1
      |                           ^~~~~~~
% ./foo1
16
1
0
1
2
1
2
%

Hope this helps,

Denis Excoffier.