[Bug pch/45471] New: ICE: in typeid_ok_p, at cp/rtti.c:311 when using precompiled headers

[Bug pch/45471] New: ICE: in typeid_ok_p, at cp/rtti.c:311 when using precompiled headers

[zsojka at seznam dot cz]

Command line:
$ g++ -O2 testcase.h
$ g++ -O2 testcase.C -fno-strict-aliasing

Compiler output:
$ g++ -O2 testcase.h
$ g++ -O2 testcase.C -fno-strict-aliasing
testcase.h: In constructor 'A<<anonymous> >::A() [with int <anonymous> = 0]':
testcase.h:17:12:   instantiated from here
testcase.h:13:5: internal compiler error: in typeid_ok_p, at cp/rtti.c:311
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r163636 - crash
r153685 - crash
4.4 r149995 - crash


-- 
           Summary: ICE: in typeid_ok_p, at cp/rtti.c:311 when using
                    precompiled headers
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: pch
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45471

[Bug pch/45471] ICE with PCH and differening strict-aliasing settings

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2010-08-31 23:14 -------
The PCH should be rejected for the differences in strict-aliasing.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
            Summary|ICE: in typeid_ok_p, at     |ICE with PCH and differening
                   |cp/rtti.c:311 when using    |strict-aliasing settings
                   |precompiled headers         |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45471

[Bug pch/45471] ICE with PCH and differening strict-aliasing settings

[zsojka at seznam dot cz]

------- Comment #2 from zsojka at seznam dot cz  2010-08-31 23:16 -------
Created an attachment (id=21629)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21629&action=view)
reduced header file

#include <typeinfo>
can be replaced with:
namespace std { struct type_info { }; }

The second part of testcase is just:
----- testcase.C -----
#include "pr45471.h"
----------------------

$ g++ -O2 pr45471.h
$ g++ -O2 pr45471.C -fno-strict-aliasing
pr45471.h: In constructor 'A<<anonymous> >::A() [with int <anonymous> = 0]':
pr45471.h:12:13:   instantiated from here
pr45471.h:8:5: internal compiler error: in typeid_ok_p, at cp/rtti.c:311
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45471

[Bug pch/45471] ICE with PCH and differening strict-aliasing settings

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45471

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |6.0
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed a different way than my patch. It was fixed by r6-5494 where
get_alias_set no longer depends on strict-aliasing.  This was done to fix the
attribute option fno-strict-aliasing (or fstrict-aliasing) case for functions.

[Bug pch/45471] ICE with PCH and differening strict-aliasing settings

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45471

--- Comment #4 from Zdenek Sojka <zsojka at seznam dot cz> 2010-12-08 14:37:21 UTC ---
(In reply to comment #3)

This patch indeed fixes the problem. (verified at r167585, x86_64-linux)