[Bug rtl-optimization/78580] [6/7 Regression] Segfault in gcc with multilib (-m32) and -ffixed-*

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78580

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |5.4.1
           Keywords|                            |ice-on-valid-code, ra
   Last reconfirmed|                            |2016-11-29
          Component|c                           |rtl-optimization
                 CC|                            |vmakarov at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|Segfault in gcc with        |[6/7 Regression] Segfault
                   |multilib (-m32) and         |in gcc with multilib (-m32)
                   |-ffixed-*                   |and -ffixed-*
   Target Milestone|---                         |6.3
      Known to fail|                            |6.2.1, 7.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.

> gcc-6  t.i -S -m32 -ffixed-ebx -B /abuild/rguenther/gcc6-g/gcc
t.i: In function ‘StartOS’:
t.i:4:2: internal compiler error: Segmentation fault
  int StartOS(signed char f) { return f; }
  ^~~
0xe3af12 crash_signal
        /space/rguenther/src/svn/gcc-6-branch/gcc/toplev.c:333
0x8a275d bitmap_element_allocate
        /space/rguenther/src/svn/gcc-6-branch/gcc/bitmap.c:133
0x8a3461 bitmap_set_bit(bitmap_head*, int)
        /space/rguenther/src/svn/gcc-6-branch/gcc/bitmap.c:605
0xc03b81 update_bad_spill_attribute
        /space/rguenther/src/svn/gcc-6-branch/gcc/ira-build.c:2650
0xc05cce ira_build()
        /space/rguenther/src/svn/gcc-6-branch/gcc/ira-build.c:3424
0xbfc1c1 ira
        /space/rguenther/src/svn/gcc-6-branch/gcc/ira.c:5261
0xbfc9da execute
        /space/rguenther/src/svn/gcc-6-branch/gcc/ira.c:5566
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