[Bug lto/99447] New: [11 Regression] ICE (segfault) in lookup_page_table_entry

["doko at debian dot org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99447

            Bug ID: 99447
           Summary: [11 Regression] ICE (segfault) in
                    lookup_page_table_entry
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at debian dot org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

seen with trunk 20210306 on x86_64-linux-gnu building the guymager package with
LTO.

$ g++ -Wl,-z,relro -ggdb -rdynamic -Wl,-flto -Wl,-z,relro -Wl,-O3 -o guymager
compileinfo.o aaff.o aewf.o config.o device.o dlgabort.o dlgacquire.o
dlgdirsel.o dlgautoexit.o dlgmessage.o dlgwait.o error.o fifo.o file.o hash.o
info.o infofield.o itemdelegate.o main.o mainwindow.o md5.o media.o qtutil.o
runstats.o sha1.o sha256.o table.o thread.o threadcompress.o threadhash.o
threadread.o threadscan.o threadwrite.o util.o moc_devicelistmodel.o
moc_dlgabort.o moc_dlgacquire.o moc_dlgautoexit.o moc_dlgacquire_private.o
moc_dlgdirsel.o moc_dlgdirsel_private.o moc_dlgmessage.o moc_dlgwait.o
moc_info.o moc_infofield.o moc_itemdelegate.o moc_main_private.o
moc_mainwindow.o moc_table.o moc_thread.o moc_threadcompress.o moc_threadhash.o
moc_threadread.o moc_threadscan.o moc_threadwrite.o   -lz -ldl -lguytools -lewf
-lbfio /usr/lib/x86_64-linux-gnu/libQt5Widgets.so
/usr/lib/x86_64-linux-gnu/libQt5Gui.so /usr/lib/x86_64-linux-gnu/libQt5DBus.so
/usr/lib/x86_64-linux-gnu/libQt5Core.so -lGL -lpthread
device.cpp: In member function ‘GetErrorText’:
device.cpp:155:1: internal compiler error: Segmentation fault
  155 | }
      | ^
0xc52c79 crash_signal
        ../../src/gcc/toplev.c:327
0x7f3b6994fd5f ???
        ./signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x11ac4fb lookup_page_table_entry
        ../../src/gcc/ggc-page.c:630
0x11ac4fb ggc_set_mark(void const*)
        ../../src/gcc/ggc-page.c:1544
0x13bdefd gt_ggc_mx_basic_block_def(void*)
        /build/gcc-11-7yDrbQ/gcc-11-11-20210306/build/gcc/gtype-desc.c:1527
0x13bc981 gt_ggc_mx_gimple(void*)
        /build/gcc-11-7yDrbQ/gcc-11-11-20210306/build/gcc/gtype-desc.c:1238
0x11b188e gt_ggc_mx_cgraph_edge(void*)
        /build/gcc-11-7yDrbQ/gcc-11-11-20210306/build/gcc/gtype-desc.c:1403
0x11b15e1 gt_ggc_mx_symtab_node(void*)
        /build/gcc-11-7yDrbQ/gcc-11-11-20210306/build/gcc/gtype-desc.c:1349
0x11a903a gt_ggc_mx_lang_tree_node(void*)
        ./gtype-lto.h:284
0x11a904e gt_ggc_mx_lang_tree_node(void*)
        ./gtype-lto.h:280
0x11a9cde gt_ggc_mx_rtx_def(void*)
        /build/gcc-11-7yDrbQ/gcc-11-11-20210306/build/gcc/gtype-desc.c:722
0x11b435e void gt_ggc_mx<dw_attr_struct>(vec<dw_attr_struct, va_gc, vl_embed>*)
        ../../src/gcc/vec.h:1353
0x11b435e gt_ggc_mx_vec_dw_attr_node_va_gc_(void*)
        ./gt-dwarf2out.h:275
0x11b435e gt_ggc_mx_die_struct(void*)
        ./gt-dwarf2out.h:45
0x11b4433 gt_ggc_mx_die_struct(void*)
        ./gt-dwarf2out.h:27
0x11b4433 gt_ggc_mx_die_struct(void*)
        ./gt-dwarf2out.h:47
0x11b4433 gt_ggc_mx_die_struct(void*)
        ./gt-dwarf2out.h:27
0x11b4433 gt_ggc_mx_die_struct(void*)
        ./gt-dwarf2out.h:47
0x11b4433 gt_ggc_mx_die_struct(void*)
        ./gt-dwarf2out.h:27
0x11b4433 gt_ggc_mx_die_struct(void*)
        ./gt-dwarf2out.h:47
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