warning: RTTI symbol not found for class

[ali_anwar]

On 11/27/2012 12:23 AM, Tom Tromey wrote:
>>>>>> "Ali" == ali anwar<ali_anwar@codesourcery.com>  writes:
>
> Ali>  gdb -q ./cout -ex start -ex s -ex fin -ex c -ex q
> Ali>  [snip]
> Ali>  2	int main () { std::cout<<  "foo"<<  std::endl; }
> Ali>  Value returned is $1 = warning: RTTI symbol not found for class
> Ali>  std::ostream'
>
> What would be best is a recipe for recreating the bug that does not rely
> on the system libstdc++ or its debuginfo or lack thereof.
> Both this short test and the bs15503 test are exposed to the system
> libraries in this way.
>

Yes, it seems so. I faced no failure on Ubuntu 12.04 without the change. 
But after the patch I faced the same 5 errors that Jan pointed. 
Following addition to the earlier patch removes all the regressions.

--- gdb/dwarf2read.c	26 Nov 2012 15:54:29 -0000	1.714
+++ gdb/dwarf2read.c	26 Nov 2012 20:43:59 -0000
@@ -7585,7 +7585,7 @@
        else
  	{
  	  demangled = cplus_demangle (mangled,
-				      (DMGL_PARAMS | DMGL_ANSI
+				      (DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE


I will try to recreate the bug without using libstdc++.

Thanks,
-Ali