[Bug c++/27177] New: ICE in build_simple_base_path, at cp/class.c:474

[nashpaulr at gmail dot com]

This is my first gcc bug, so please be kind...

I'm in the process of upgrading my company's toolchain from 3.4.4 to 4.1.0
(mostly because we want ARM EABI support...but that's not relevant, it turns
out this bug happens on both i686 and ARM targets).

I narrowed down a particular usage of Loki's Type Manipulation templates
combined with a common _C_ASSERT trick that was causing an ICE:

ice-cp-class_c_474.cpp: In instantiation of 'Loki::Conversion<const volatile
Event*, const volatile IBar*>':
ice-cp-class_c_474.cpp:62:   instantiated from 'Loki::Conversion<const volatile
IBar*, const volatile Event*>'
ice-cp-class_c_474.cpp:118:   instantiated from
'Loki::SuperSubclassStrict<IBar, Event>'
ice-cp-class_c_474.cpp:201:   instantiated from here
ice-cp-class_c_474.cpp:58: internal compiler error: in build_simple_base_path,
at cp/class.c:474
Please submit a full bug report,

I will attach my one-page self-contained .cpp file.

This is known to work on gcc-3.4.4.

My compiler is configured thusly:

/usr/local/i686/4.1.0-1a/bin/g++ -v ice-cp-class_c_474.cpp
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: .././gcc-4.1.0-pass2/configure
--prefix=/usr/local/i686/4.1.0-1a --libexecdir=/usr/local/i686/4.1.0-1a/lib
--with-local-prefix=/usr/local/i686/4.1.0-1a --enable-threads=posix
--enable-c99 --enable-clocale=gnu --enable-shared --enable-__cxa_atexit
--enable-languages=c,c++ --enable-long-long --disable-libstdcxx-pch
Thread model: posix
gcc version 4.1.0


-- 
           Summary: ICE in build_simple_base_path, at cp/class.c:474
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nashpaulr at gmail dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu, arm-non-linux-gnueabi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27177