[Cscope-cvs] CVS: cscope ChangeLog,1.180,1.181

[Neil H. <nh...@us...>]

Update of /cvsroot/cscope/cscope
In directory ddv4jf1.ch3.sourceforge.com:/tmp/cvs-serv25714

Modified Files:
	ChangeLog 
Log Message:
The lexer, if passed a file with a c extension that has only a '=' or ':' symbol
in it, will trigger lexer rules that expect my_yytext to be set.  Since no other
rules have been triggered yet, my_yytext is NULL and a segfault occurs.  To fix
this we add a LEXERR token and return it if my_yytext is null.  This causes the
crossref generator to detect the lexer error and abort further processing of the
file.




Index: ChangeLog
===================================================================
RCS file: /cvsroot/cscope/cscope/ChangeLog,v
retrieving revision 1.180
retrieving revision 1.181
diff -C2 -r1.180 -r1.181
*** ChangeLog	6 May 2009 14:41:50 -0000	1.180
--- ChangeLog	28 Aug 2009 14:28:27 -0000	1.181
***************
*** 1,2 ****
--- 1,15 ----
+ 2009-08-28  Neil Horman <nh...@tu...>
+ 
+ 	* src/scanner.h: Added a LEXERR token to be returned if a lexer error
+ 	occurs
+ 
+ 	* src/crossref.c: Check for LEXERR token, and abort processing file if
+ 	lexer error occurs
+ 
+ 	* src/fcanner.l: check the statue of my_yytext on = and : symbols.  If
+ 	its NULL consider that a lexer error.  This can occur if input files are
+ 	provided that contain only a '=' or ':' symbol.  Without the ability to
+ 	detect and return a lexer error, we get a segfault.
+ 
  2009-05-06  Neil Horman <nh...@tu...>