Re: examples/c/bistromathic/bistromathic.test fails: bistromathic: FAIL: 14: err: 1.4: syntax error: expected - or ( or number or function or variable before end of file

[Akim Demaille]

Thomas,

> Le 5 sept. 2020 à 20:37, Thomas Deutschmann <whissi@gentoo.org> a écrit :
> 
> Hi,
> 
> I am getting the following test failure with bison-3.7.2:
> 
>> bistromathic: FAIL: 14
>> bistromathic: input:
>>  (1+         
>> bistromathic: expected output:
>>> (1+
>>  (       -       atan    cos     exp     ln      number  sin     sqrt
>>> (1+
>>> 
>>  err: 1.4: syntax error: expected - or ( or number or function or variable 
>> before end of file
>>  err:     1 | (1+
>>  err:       |    ^
>> bistromathic: effective output:
>>> (1+
>>  (       -       atan    cos     exp     ln      number  sin     sqrt    
>>> (1+
>>> 
>>  err: 1.4: syntax error: expected - or ( or number or function or variable 
>> before end of file
>>  err:     1 | (1+
>>  err:       |    ^
>> bistromathic: diff:
>>  --- exp     2020-09-05 20:06:15.564480353 +0200
>>  +++ eff     2020-09-05 20:06:15.571147113 +0200
>>  @@ -1,5 +1,5 @@
>>> (1+
>>  -(       -       atan    cos     exp     ln      number  sin     sqrt
>>  +(       -       atan    cos     exp     ln      number  sin     sqrt    
>>> (1+
>>> 
>>   err: 1.4: syntax error: expected - or ( or number or function or variable 
>> before end of file
> 
> It's not new. 3.6.4 is also failing the same.

It looks very much that a readline portability issue.  But the diff
is not readable in the message.  Could you please send
examples/c/bistromathic/bistromathic.log as an attachment?