[Bug target/35225] New: [4.2 regression] gcc segfaults when building GTK+ code with -O2 -fPIC for SH4

["vapier at gentoo dot org" <gcc-bugzilla at gcc dot gnu dot org>]

the attached test case (which comes from GTK+) causes GCC to ICE due to the -O2
-fPIC flags:

sh4-unknown-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I. -I.. -DG_LOG_DOMAIN=\"Gtk\"
-DGTK_LIBDIR=\"/usr/lib\" -DGTK_DATADIR=\"/usr/share\" -DGTK_
DATA_PREFIX=\"/usr\" -DGTK_SYSCONFDIR=\"/etc\" -DGTK_VERSION=\"2.12.7\"
-DGTK_BINARY_VERSION=\"2.10.0\" -DGTK_HOST=\"sh4-unknown-linux-gnu\"
 -DGTK_COMPILATION -DGTK_PRINT_BACKENDS=\"file,lpr\"
"-DGTK_PRINT_PREVIEW_COMMAND=\"evince --unlink-tempfile --preview
--print-settings %s %
f\"" -I../gtk -I.. -I../gdk -I../gdk -I../gdk-pixbuf -I../gdk-pixbuf
-DGDK_PIXBUF_DISABLE_DEPRECATED -DGDK_DISABLE_DEPRECATED -DGTK_FILE_SYS
TEM_ENABLE_UNSUPPORTED -DGTK_PRINT_BACKEND_ENABLE_UNSUPPORTED
-DG_DISABLE_CAST_CHECKS -pthread -D_REENTRANT -I/usr/include/glib-2.0 -I/usr/l
ib/glib-2.0/include -I/usr/include/pango-1.0 -I/usr/include/cairo
-I/usr/include/freetype2 -I/usr/include/directfb -I/usr/include/libpng12 -
I/usr/include/atk-1.0 -pipe -O2 -Wall -MT gtknotebook.lo -MD -MP -MF
.deps/gtknotebook.Tpo -c gtknotebook.c  -fPIC -DPIC -o .libs/gtknoteboo
k.o
gtknotebook.c: In function 'gtk_notebook_set_focus_child':
gtknotebook.c:3927: warning: dereferencing type-punned pointer will break
strict-aliasing rules
gtknotebook.c:3930: warning: dereferencing type-punned pointer will break
strict-aliasing rules
gtknotebook.c: In function 'gtk_notebook_real_remove':
gtknotebook.c:4378: warning: dereferencing type-punned pointer will break
strict-aliasing rules
gtknotebook.c: In function 'gtk_notebook_calculate_tabs_allocation':
gtknotebook.c:5488: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugs.gentoo.org/> for instructions.
Preprocessed source stored into /tmp/cc3v7chW.out file, please attach this to
your bugreport.

gcc-4.2.2 and gcc-4.2.3 fail while gcc-4.1.1 works.  occurs both natively on sh
and when cross-compiling from powerpc.


-- 
           Summary: [4.2 regression] gcc segfaults when building GTK+ code
                    with -O2 -fPIC for SH4
           Product: gcc
           Version: 4.2.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: vapier at gentoo dot org
GCC target triplet: sh4-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35225