helpbison - Support: sr #108481, Assertion `!yytname_' failed.

 
 

sr #108481: Assertion `!yytname_' failed.

Submitted by:  None
Submitted on:  Thu 23 Jan 2014 04:30:53 PM UTC  
 
Category: NonePriority: 5 - Normal
Severity: 3 - NormalStatus: None
Privacy: PublicAssigned to: None
Originator Email: -unavailable-Open/Closed: Open
Operating System: GNU/Linux

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Thu 23 Jan 2014 04:30:53 PM UTC, original submission:

Hi all,
I was testing error recovery with bison and I'm getting this assertion here:

/// Instantiate an empty \a T in here.
template <typename T>
T&
build ()
{
YYASSERT (!yytname_);
YYASSERT (sizeof (T) <= S);
yytname_ = typeid (T).name ();
return *new (yyas_<T> ()) T;
}
when using this simple grammar.

%token <char> CHAR "char"
%token <int> NUM "number"
%token SEMICOLON ";"
%token END 0 "end of file"

%%

stms : stms CHAR ";"
| CHAR ";"
| error ";" {yyerrok;}
;

%%

I've used bison 3.0.2 and flex 2.5.37.
I'm attaching all the code I used with this test.

I was expecting two error messages, and in fact I get those messages when I remove the parse.assert definition.

I used g++ *.cpp -o test to compile the code, after bison and flex.

Cheers,
Antonio

Anonymous

 

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Attached Files
file #30354:  assert_error.zip added by None (34kB - application/octet-stream - Example to reproduce the problem)

 

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    Date Changed By Updated Field Previous Value => Replaced By
    Thu 23 Jan 2014 04:30:53 PM UTCNoneAttached File-=>Added assert_error.zip, #30354

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