Description of problem:
flex generates code that compares signed and unsigned numbers. While this is
unlikely to cause problems in practice, it's nice habit to declare the variable
types properly.

Version-Release number of selected component (if applicable):
flex-2.5.35-1.fc9

How reproducible:
Always.

Steps to Reproduce:
1. Use following code:
%option noyywrap

white		[ \t]+

%%
{white} 	{ /* We ignore white characters. */ }

2. Compile using flex flex_test.l && cc -Wsign-compare lex.yy.c

  
Actual results:
lex.yy.c: In function ‘yy_get_next_buffer’:
lex.yy.c:956: warning: comparison between signed and unsigned


Expected results:
Warningless compilation.

Additional info:
I have contacted flex maintainer (srivasta at debian) on 2008-04-30 but received
no response so far.