Re: [3.0 regression] File naming confusion

[Neil Booth <neil at daikokuya dot demon dot co dot uk>]

Neil Booth wrote:-

> Many moons ago, Benjamin Kosnik wrote:-
> 
> > I keep dropping the ball WRT the line-numbering issue. Here's a
> > small example:
> 
> Here's a *really easy* testcase.  We MUST get this fixed for 3.0.
> 
> #line 500 "foo.c"
> int
> main ()
> {
>   return 0;
> }

Well, I can fix this with the patch below, but not your C++ testcase.
I suspect that both have the same (correct) fix.  I've looked into
this as much as I can; someone who understands debug output, and the
global variables it depends on (because that *is* where the bug is,
I'm convinced) needs to look at this.  I've given enough clues as to
what is causing it.

I will enter a bug report as high priority.

Neil.

Index: c-lex.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-lex.c,v
retrieving revision 1.141
diff -u -p -r1.141 c-lex.c
--- c-lex.c	2001/05/23 19:05:37	1.141
+++ c-lex.c	2001/05/24 07:23:24
@@ -292,6 +292,8 @@ cb_file_change (pfile, fc)
       else
 	error ("leaving more files than we entered");
     }
+  else
+    input_file_stack->name = fc->to.filename;
 
   update_header_times (fc->to.filename);
   in_system_header = fc->sysp != 0;