Re: YYText related problem in flex++

[John W. Millaway]

> I am using Flex++ to scan from a stream buffer.I have a structure with char
> pointers. 
> when a token is matched, i point these char pointers to YYText(), assign a
> null char
> to the last delimiter char. This way i avoid any strcpy or malloc.
> This works almost correctly, except for the first token. When i try to
> access the first token's
> value this way, null char is returned.
> If someone could answer this question i would be thankful

I'm surprised this works at all. You simply have to strdup() yytext if you want
to reliably preserve tokens. Internally, flex null-terminates yytext, but
*saves* the character before writing the null byte. The single saved character
is restored on the next call to yylex().



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