[antlr-interest] Octal error in C.g grammar

Andrew Haley aph at redhat.com
Fri Feb 26 06:24:44 PST 2010


On 02/26/2010 01:35 PM, Mark Ruvald wrote:

> I think I've found a little error in the C grammar available at
> http://antlr.org/grammar/1153358328744/C.g .
> 
> The lexer rule in question is:
> OCTAL_LITERAL : '0' ('0'..'7')+ IntegerTypeSuffix? ;
> 
> - Only 1 leading zero is allowed, but gcc allows 1 or more:
> OCTAL_LITERAL : '0'+ ('0'..'7')+ IntegerTypeSuffix? ;
> 
> It's a minor thing, but still...

Err, how would you tell the difference?  :-)

Andrew.


More information about the antlr-interest mailing list