[antlr-interest] Re: crash in 2.7.2

[lgcraymer]

Mona--

AST factory initialization has changed in 2.7.2, and this looks like 
you have tripped over that.  At a guess, you have a custom 
constructor for your parser and haven't spliced in the AST factory 
initialization code.

Ric Klaren can probably clarify--I can't find the initialization 
code from just browsing the C++ support stuff.

--Loring


--- In antlr-interest at yahoogroups.com, "monaabs" <monaabs at y...> 
wrote:
> Hi , 
> My application is crashing on this statement 
>    astFactory->addASTChild(currentAST, n_AST);
> The SQL_Parser.cpp looks like this 
> 
> void SQL_Parser::r_QNamePart() {
> 	returnAST = ANTLR_USE_NAMESPACE(antlr)nullAST;
> 	ANTLR_USE_NAMESPACE(antlr)ASTPair currentAST;
> 	ANTLR_USE_NAMESPACE(antlr)RefAST r_QNamePart_AST = 
> ANTLR_USE_NAMESPACE(antlr)nullAST;
> 	ANTLR_USE_NAMESPACE(antlr)RefToken  n = ANTLR_USE_NAMESPACE
> (antlr)nullToken;
> 	ANTLR_USE_NAMESPACE(antlr)RefAST n_AST = ANTLR_USE_NAMESPACE
> (antlr)nullAST;
> 	
> 	n = LT(1);
> 	if ( inputState->guessing == 0 ) {
> 		n_AST = astFactory->create(n);
> 		astFactory->addASTChild(currentAST, n_AST);
> 	}
> 
> The astFactory seems to have a value of 0x0000ffff. why would this 
> happen ? 
> 
> To compile the lib , i used ANTLR_EXPORTS in my project 
settings .. 
> is this a reason for crash ?
> 
> Regards
> Mona


 

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