Re: Enhancement request: enabling Variant in C parsers

[Hans Åberg]

> On 25 Aug 2018, at 08:51, Akim Demaille <address@hidden> wrote:
> 
>> Le 23 août 2018 à 07:34, Akim Demaille <address@hidden> a écrit :
>> 
>>> Le 21 août 2018 à 10:46, Hans Åberg <address@hidden> a écrit :
>>> 
>>> 
>>>> On 19 Aug 2018, at 17:23, Akim Demaille <address@hidden> wrote:
>>>> 
>>>>>> I would strongly suggest that you look at the examples/ in Bison, the C++
>>>>>> calculator
>>>>> 
>>>>> I did look at it - this example scared me off c++ parsers :-(
>>>> 
>>>> Really???  Then I failed.  Can you be more specific?
>>> 
>>> I noticed: It does not have a Makefile, so one can’t just copy it and 
>>> compile.
>> 
>> Why not adding one, indeed.
> 
> I installed this.

Ignore last message, I ran the calc++ example without ./configure && make.

But now I get the following error, with extra quotes in the #line directives. 
They do not appear if I compile the same example with bison 3.0.5. So it seems 
to be a bug in the pre-release.

$ make
../../src/bison  -o parser.cc parser.yy
g++  -c -ocalc++.o calc++.cc
g++  -c -odriver.o driver.cc
g++  -c -oparser.o parser.cc
parser.cc:334:10: error: """parser" is not a valid filename
 #line 42 ""parser.yy"" // lalr1.cc:635
          ^~~~~~~~
parser.cc:341:10: error: """parser" is not a valid filename
 #line 42 ""parser.yy"" // lalr1.cc:635
          ^~~~~~~~
parser.cc:348:10: error: """parser" is not a valid filename
 #line 42 ""parser.yy"" // lalr1.cc:635
          ^~~~~~~~
make: *** [parser.o] Error 1