[Bug tree-optimization/60914] ICE: SIGSEGV (use after free) in bitmap_obstack_alloc_stat() with -flto -fvtable-verify=preinit

[ctice at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60914

--- Comment #2 from ctice at gcc dot gnu.org ---
Running your tests, I get a different ICE:

 gcc-fsf-root/usr/local/bin/gcc -O -flto -fvtable-verify=preinit pr59437.C
pr59437.C: In function ‘_GLOBAL__sub_I.00099_cout’:
pr59437.C:24:1: internal compiler error: Segmentation fault
 }
 ^
0xd6bfc1 crash_signal
    ../../gcc-fsf.clean/gcc/toplev.c:337
0x8a8ea5 bitmap_obstack_free(bitmap_head*)
    ../../gcc-fsf.clean/gcc/bitmap.c:408
0xdb3a83 cleanup_tree_cfg_1
    ../../gcc-fsf.clean/gcc/tree-cfgcleanup.c:698
0xdb3ae8 cleanup_tree_cfg_noloop
    ../../gcc-fsf.clean/gcc/tree-cfgcleanup.c:731
0xdb3bf5 cleanup_tree_cfg()
    ../../gcc-fsf.clean/gcc/tree-cfgcleanup.c:786
0xc7a8dc execute_function_todo
    ../../gcc-fsf.clean/gcc/passes.c:1741
0xc79cd8 do_per_function
    ../../gcc-fsf.clean/gcc/passes.c:1504
0xc7ab37 execute_todo
    ../../gcc-fsf.clean/gcc/passes.c:1817
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I will investigate this, but I am concerned that I cannot seem to reproduce
your problem?