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Subject: [Bug middle-end/30864] [4.3 Regression] ice for legal code with -O2
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------- Comment #4 from pinskia at gcc dot gnu dot org  2007-02-22 19:04 -------
Reduced testcase:
struct QString { ~QString(); };
template <class T> struct QValueListNode {
        QValueListNode<T>* next;
        T data;
};
template <class T> struct QValueListPrivate
{
        ~QValueListPrivate()
        {
                QValueListNode<T>* p = node->next;
                while( p != node )
                {
                        QValueListNode<T>* x = p->next;
                        delete p;
                        p = x;
                }
        }
        QValueListNode<T>* node;
};
struct Option { QString sarg; };
struct Options {
        QString helptext;
        QValueListPrivate <QString> filelist;
        QValueListPrivate <Option> optlist;
};
Options options;


--------------------------------
Backtrace:
#0  fancy_abort (file=0xda8f04 "../../gcc/cfg.c", line=665, function=0xda92c0
"alloc_aux_for_block") at ../../gcc/diagnostic.c:642
#1  0x00797674 in alloc_aux_for_block (bb=0xf6fbe0, size=24) at
../../gcc/cfg.c:665
#2  0x007979d8 in alloc_aux_for_blocks (size=24) at ../../gcc/cfg.c:693
#3  0x00989adc in estimate_bb_frequencies () at ../../gcc/predict.c:1712
#4  0x004b7594 in execute_function_todo (data=0x463d) at ../../gcc/passes.c:899
#5  0x004b6e70 in do_per_function (callback=0x4b71d4 <execute_function_todo>,
data=0x463d) at ../../gcc/passes.c:754
#6  0x004b76d8 in execute_todo (flags=17981) at ../../gcc/passes.c:932
#7  0x004b7e0c in execute_one_pass (pass=0xe9956c) at ../../gcc/passes.c:1077


(gdb) p *pass
$2 = {
  name = 0xd82eb0 "apply_inline", 


Note I reduced this to be able to reproduce with just -O2.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2007-02-22 19:04:49
               date|                            |
            Summary|[4.3 Regression] ice for    |[4.3 Regression] ice for
                   |legal code with -O3         |legal code with -O2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30864