[Bug tree-optimization/47283] New: [4.6 regression] ICE in refs_may_alias_p_1, at tree-ssa-alias.c

[doko at ubuntu dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47283

           Summary: [4.6 regression] ICE in refs_may_alias_p_1, at
                    tree-ssa-alias.c
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: d...@ubuntu.com


this was the only ICE seen in a partial distribution rebuilds on ix86 and
x86_64

trunk 20101113, on i686-linux-gnu, works with -Os, -O1, fails with -O2, -O3

$ g++-4.6 -c kcategorizedview.ii -g -O3
../../kdeui/itemviews/kcategorizedview.cpp: In member function 'virtual void
KCategorizedView::mouseMoveEvent(QMouseEvent*)':
../../kdeui/itemviews/kcategorizedview.cpp:961:75: warning: 'virtual void
KCategoryDrawerV2::mouseButtonMoved(const QModelIndex&, QMouseEvent*)' is
deprecated (declared at ../../kdeui/itemviews/kcategorydrawer.h:127)
[-Wdeprecated-declarations]
../../kdeui/itemviews/kcategorizedview.cpp: In member function 'virtual void
KCategorizedView::mousePressEvent(QMouseEvent*)':
../../kdeui/itemviews/kcategorizedview.cpp:999:77: warning: 'virtual void
KCategoryDrawerV2::mouseButtonPressed(const QModelIndex&, QMouseEvent*)' is
deprecated (declared at ../../kdeui/itemviews/kcategorydrawer.h:123)
[-Wdeprecated-declarations]
../../kdeui/itemviews/kcategorizedview.cpp: In member function 'virtual void
KCategorizedView::mouseReleaseEvent(QMouseEvent*)':
../../kdeui/itemviews/kcategorizedview.cpp:1030:78: warning: 'virtual void
KCategoryDrawerV2::mouseButtonReleased(const QModelIndex&, QMouseEvent*)' is
deprecated (declared at ../../kdeui/itemviews/kcategorydrawer.h:125)
[-Wdeprecated-declarations]
In file included from ../../kdeui/itemviews/kcategorizedview.cpp:1470:0:
./kcategorizedview.moc: In member function 'virtual int
KCategorizedView::qt_metacall(QMetaObject::Call, int, void**)':
./kcategorizedview.moc:87:162: warning: 'virtual void
KCategorizedView::rowsInsertedArtifficial(const QModelIndex&, int, int)' is
deprecated (declared at ../../kdeui/itemviews/kcategorizedview.cpp:1433)
[-Wdeprecated-declarations]
./kcategorizedview.moc:88:150: warning: 'virtual void
KCategorizedView::rowsRemoved(const QModelIndex&, int, int)' is deprecated
(declared at ../../kdeui/itemviews/kcategorizedview.cpp:1444)
[-Wdeprecated-declarations]
../../kdeui/itemviews/kcategorizedview.cpp: In member function 'virtual void
KCategorizedView::updateGeometries()':
../../kdeui/itemviews/kcategorizedview.cpp:1378:1: internal compiler error: in
refs_may_alias_p_1, at tree-ssa-alias.c:1081
Please submit a full bug report,
with preprocessed source if appropriate.