Re: [Ctool-users] Parsing error

[Emil O. <em...@ee...>]

Hi,

I think that I've discovered at least part of the problem: it looks like 
in the current grammar, #line statements are illegal at the beginning of 
a compound statement, so if I change the code to this:

static void
runas_setup()
{
     if ((sudo_user._runas_pw) ->pw_name != ((void *)0) ) {
	{
	    if (setgid((sudo_user._runas_pw) ->pw_gid))
		perror("cannot set gid to runas gid");
# 318 "set_perms.c"

	


	    if (! (sudo_defs_table[( 34  )].sd_un.flag)  &&
		initgroups(* (sudo_user.runas) , (sudo_user._runas_pw) ->pw_gid) < 0)
		perror("cannot set group vector");

	}
     }
}

everything parses.  I also tried putting the #line between the "if" line 
and the "perror" line, but that will not parse.  Also, it looks like 
#line must appear after a statement (i.e. not after an 
opt_declaration_list).  Am I right about this?  If so, how can I fix it?

Thanks,
Emil


flisakow wrote:
>   Hi,
> 
>   I received this message from the email list, and I'm CC'ing it back
>   to the user's list also, so you should receive two copies.  I was
>   on vacation for the last week, and didn't reply to any email.
> 
>   One possible problem is that CTool uses gcc as its preprocessor by
>   default (that's controlled by a compile-time option).  Perhaps the
>   #line directives inserted by that 2nd pass are actually causing 
>   the problem.  There's a remove(cpp_file) call in project.cpp that
>   could be commented out so you could see the actual input to CTool
>   (its stored in filename.pp).
> 
>   I'll that a look at this myself in the next few days, but I wanted
>   to reply sooner so you'd know the list is not dead.
> 
>   Shaun
> 
> 
>>Hi,
>>
>>I'm having trouble parsing a few files in sudo-1.6.5p2 (though I'm 
>>having similar problems in other packages).  The ctool parser doesn't 
>>seem to like files produced by bison/flex (who would? ;).  In sudo, the 
>>offending files are lex.yy.c and sudo.tab.c.  Then there's the file 
>>set_perms.c which has a really strange error.  I extracted the 
>>problematic preprocessed code:
>>
>>static void
>>runas_setup()
>>{
>>     if ((sudo_user._runas_pw) ->pw_name != ((void *)0) ) {
>># 314 "set_perms.c"
>>	{
>>	    if (setgid((sudo_user._runas_pw) ->pw_gid))
>>		perror("cannot set gid to runas gid");
>>
>>	
>>
>>
>>	    if (! (sudo_defs_table[( 34  )].sd_un.flag)  &&
>>		initgroups(* (sudo_user.runas) , (sudo_user._runas_pw) ->pw_gid) < 0)
>>		perror("cannot set group vector");
>>
>>	}
>>     }
>>}
>>
>>set_perms.c:312: Error (parse error) before '#line'
>># 313 "set_perms.c"
>>    ^
>>set_perms.c:327: Error (parse error) before 'String Constant'
>>}
>>
>>The first error is really strange to me considering that the line 
>>mentioned is not in the file!  Any ideas on where this is coming from?
>>
>>Thanks,
>>Emil
>>
>>
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> 
> 
>