[Bug c++/43313] ICE with non-POD and covariant return thunks

[Bug c++/43313] ICE with non-POD and covariant return thunks

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43313

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|gcc-bugs at gcc dot gnu.org |

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-07 20:11:27 UTC ---
Is this still an issue?

[Bug c++/43313] ICE with non-POD and covariant return thunks

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43313

--- Comment #6 from Peter Bergner <bergner at gcc dot gnu.org> 2012-11-07 22:16:52 UTC ---
Reconfirmed.  It fails with mainline as of today and with the FSF 4.7 branch,
but only with -m32.  It compiles fine with -m64.

[Bug c++/43313] ICE with non-POD and covariant return thunks

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43313

--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> 2012-11-07 23:33:54 UTC ---
Backtrace:

#0  fancy_abort (file=0x113d6b90
"/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c", line=7597, 
    function=0x113d7158 <expand_expr_addr_expr_1(tree_node*, rtx_def*,
machine_mode, expand_modifier, unsigned char)::__FUNCTION__>
"expand_expr_addr_expr_1")
    at /home/bergner/gcc/gcc-fsf-mainline-base/gcc/diagnostic.c:1143
#1  0x000000001066f4e0 in expand_expr_addr_expr_1 (exp=0xfffb5cd1700,
target=0x0, tmode=SImode, 
    modifier=EXPAND_NORMAL, as=0 '\000') at
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c:7597
#2  0x000000001066fdd4 in expand_expr_addr_expr (exp=0xfffb5a962e0, target=0x0,
tmode=SImode, 
    modifier=EXPAND_NORMAL) at
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c:7706
#3  0x000000001066b0dc in expand_expr_real_1 (exp=0xfffb5a962e0, target=0x0,
tmode=VOIDmode, 
    modifier=EXPAND_NORMAL, alt_rtl=0x0) at
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c:10386
#4  0x000000001066b328 in expand_expr_real (exp=0xfffb5a962e0, target=0x0,
tmode=VOIDmode, 
    modifier=EXPAND_NORMAL, alt_rtl=0x0) at
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.c:7866
#5  0x00000000104d8084 in expand_normal (exp=0xfffb5a962e0)
    at /home/bergner/gcc/gcc-fsf-mainline-base/gcc/expr.h:450
...


(gdb) p DECL_P (exp)
$22 = true
(gdb) p TREE_ADDRESSABLE (exp)
$23 = 1
(gdb) p ! MEM_P (result)
$24 = true
(gdb) p ! targetm.calls.allocate_stack_slots_for_args()
$25 = false
(gdb) ptree exp
 <parm_decl 0xfffb5cd1700 PidIndex
    type <record_type 0xfffb5c2fb58 CRemapPidIndex type_5 QI
        size <integer_cst 0xfffb5a92540 constant 8>
        unit size <integer_cst 0xfffb5a92560 constant 1>
        align 8 symtab 0 alias set -1 canonical type 0xfffb5c2fb58
        fields <type_decl 0xfffb5b94b78 CRemapPidIndex type <record_type
0xfffb5c2fdf8 CRemapPidIndex>
            nonlocal decl_4 VOID file foo.ii line 4 col 67
            align 1 context <record_type 0xfffb5c2fb58 CRemapPidIndex> result
<record_type 0xfffb5c2fb58 CRemapPidIndex>
           > context <translation_unit_decl 0xfffb5b90170 D.1>
        full-name "class CRemapPidIndex"
        X() X(constX&) this=(X&) n_parents=1 use_template=0 interface-unknown
        pointer_to_this <pointer_type 0xfffb5cc4398> chain <type_decl
0xfffb5b94898 CRemapPidIndex>>
    addressable used QI file foo.ii line 18 col 53 size <integer_cst
0xfffb5a92540 8> unit size <integer_cst 0xfffb5a92560 1>
    align 8 context <function_decl 0xfffb5c7f400
_ZTch0_h4_N8CPlayout14CreateCarouselE14CRemapPidIndex>

    (reg/v:QI 125 [ PidIndex ]) arg-type <record_type 0xfffb5c2fb58
CRemapPidIndex>
    incoming-rtl (mem:QI (reg:SI 4 4) [0 S1 A8])>

[Bug c++/43313] ICE with non-POD and covariant return thunks

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43313

--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> 2012-11-07 23:39:56 UTC ---
...and the reduced test case I used for the above.  Does any of the above make
sense for anyone?


class CObject {};
class CMsgProc:virtual public CObject { };
template < typename ValueType > class CTypesafeValue { };
class CRemapPidIndex:public CTypesafeValue < short unsigned int > {};
class ICarousel
{
    virtual ~ ICarousel ();
};
class IPlayout
{
    virtual ICarousel * CreateCarousel (CRemapPidIndex PidIndex) = 0;
};
class CCarousel:public CMsgProc, public ICarousel { };
class CPlayout: public IPlayout 
{
    CCarousel *CreateCarousel (CRemapPidIndex PidIndex);
};
CCarousel *CPlayout::CreateCarousel (CRemapPidIndex PidIndex) { }

[Bug c++/43313] New: internal compiler error

[rozachar at cisco dot com]

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I am unable to compile this code at -O1 or higher for ppc target.  I tested
this on my 4.2.4 cross compiler, Denx 4.2.2 cross compiler, and my 4.4.1 cross
compiler.  

[rozachar@torlxemb1 OM_Playout]$ powerpc-burke-linux-g++ -c -O1 -v test.ii
Using built-in specs.
Target: powerpc-burke-linux
Configured with:
/distro/burke/dev/2009.09/oe/build/oetmp/work/i686-ppc440e-sdk-burke-linux/gcc-cross-sdk-4.2.4-r8.2/gcc-4.2.4/configure
--build=i686-linux --host=i686-linux --target=powerpc-burke-linux
--prefix=/usr/local/burke/powerpc --exec_prefix=/usr/local/burke/powerpc
--bindir=/usr/local/burke/powerpc/bin --sbindir=/usr/local/burke/powerpc/bin
--libexecdir=/usr/local/burke/powerpc/libexec
--datadir=/usr/local/burke/powerpc/share
--sysconfdir=/usr/local/burke/powerpc/etc
--sharedstatedir=/usr/local/burke/powerpc/share/com
--localstatedir=/usr/local/burke/powerpc/var
--libdir=/usr/local/burke/powerpc/lib
--includedir=/usr/local/burke/powerpc/include
--oldincludedir=/usr/local/burke/powerpc/include
--infodir=/usr/local/burke/powerpc/share/info
--mandir=/usr/local/burke/powerpc/share/man --with-gnu-ld --enable-shared
--enable-target-optspace --enable-languages=c,c++,objc --enable-threads=posix
--enable-multilib --enable-c99 --enable-long-long --enable-symvers=gnu
--enable-libstdcxx-pch --program-prefix=powerpc-burke-linux- --enable-libssp
--disable-bootstrap --enable-libgomp --disable-libmudflap
--with-sysroot=/usr/local/burke/powerpc/powerpc-burke-linux
--with-build-time-tools=/distro/burke/dev/2009.09/oe/build/oetmp/cross/ppc440e/powerpc-burke-linux/bin
--with-build-sysroot=/distro/burke/dev/2009.09/oe/build/oetmp/staging/ppc440e-burke-linux
--disable-libunwind-exceptions --enable-libssp --enable-libgomp
--disable-libmudflap
--with-mpfr=/distro/burke/dev/2009.09/oe/build/oetmp/staging/i686-linux/usr
--enable-__cxa_atexit
Thread model: posix
gcc version 4.2.4
 /usr/local/burke/powerpc/libexec/gcc/powerpc-burke-linux/4.2.4/cc1plus
-fpreprocessed test.ii -quiet -dumpbase test.ii -auxbase test -O1 -version -o
/tmp/ccyqwRie.s
GNU C++ version 4.2.4 (powerpc-burke-linux)
        compiled by GNU C version 4.3.0 20080428 (Red Hat 4.3.0-8).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 305b4088bdd69deb7ce8a8fa07df1676
test.ii: In member function ‘CCarousel*
CPlayout::_ZTch0_h4_N8CPlayout14CreateCarouselEP14CCarouselOwner14CRemapPidIndex(CCarouselOwner*,
CRemapPidIndex)’:
test.ii:50: internal compiler error: in expand_expr_addr_expr_1, at expr.c:6577
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions


-- 
           Summary: internal compiler error
           Product: gcc
           Version: 4.2.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rozachar at cisco dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43313

[Bug c++/43313] ICE with non-POD and covariant return thunks

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2010-03-10 10:49 -------
Works for me on x86_64 and i?86 with various GCC versions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43313