[Bug tree-optimization/65661] New: ICE in operator[], at vec.h:736, called from partition_view_init

[Bug tree-optimization/65661] New: ICE in operator[], at vec.h:736, called from partition_view_init

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65661

            Bug ID: 65661
           Summary: ICE in operator[], at vec.h:736, called from
                    partition_view_init
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org

$ gcc src/gcc/testsuite/c-c++-common/ubsan/object-size-9.c
src/gcc/testsuite/c-c++-common/ubsan/object-size-9.c: In function ‘f1’:
src/gcc/testsuite/c-c++-common/ubsan/object-size-9.c:17:1: internal compiler
error: in operator[], at vec.h:736
 f1 (struct T x, int i)
 ^
0x6b2ac0 vec<tree_node*, va_gc, vl_embed>::operator[](unsigned int)
    /home/vries/gcc_versions/devel/src/gcc/vec.h:736
0xff2c45 partition_view_init
    /home/vries/gcc_versions/devel/src/gcc/tree-ssa-live.c:314
0xff2f25 partition_view_bitmap(_var_map*, bitmap_head*, bool)
    /home/vries/gcc_versions/devel/src/gcc/tree-ssa-live.c:394
0xfc9ccd coalesce_ssa_name()
    /home/vries/gcc_versions/devel/src/gcc/tree-ssa-coalesce.c:1335
0xf4d560 remove_ssa_form
    /home/vries/gcc_versions/devel/src/gcc/tree-outof-ssa.c:1018
0xf4dee5 rewrite_out_of_ssa(ssaexpand*)
    /home/vries/gcc_versions/devel/src/gcc/tree-outof-ssa.c:1252
0x823ef3 execute
    /home/vries/gcc_versions/devel/src/gcc/cfgexpand.c:5932
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
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Subject: [Bug tree-optimization/65661] ICE in operator[], at vec.h:736, called from partition_view_init
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65661

--- Comment #1 from vries at gcc dot gnu.org ---
At -O2, it's called from parition_to_var:
...
$ gcc src/gcc/testsuite/c-c++-common/ubsan/object-size-9.c -O2
src/gcc/testsuite/c-c++-common/ubsan/object-size-9.c: In function ‘f1’:
src/gcc/testsuite/c-c++-common/ubsan/object-size-9.c:97:1: internal compiler
error: in operator[], at vec.h:736
 }
 ^
0x6b2ac0 vec<tree_node*, va_gc, vl_embed>::operator[](unsigned int)
    /home/vries/gcc_versions/devel/src/gcc/vec.h:736
0xfcd71c partition_to_var
    /home/vries/gcc_versions/devel/src/gcc/tree-ssa-live.h:107
0xfce796 execute
    /home/vries/gcc_versions/devel/src/gcc/tree-ssa-copyrename.c:469
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
...
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/65661] ICE in operator[], at vec.h:736, called from partition_view_init
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide661

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Duh, I can't reproduce.  Hasn't this been by any chance already fixed?

[Bug tree-optimization/65661] ICE in operator[], at vec.h:736, called from partition_view_init

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65661

--- Comment #3 from vries at gcc dot gnu.org ---
r221833

Configured with: src/configure --prefix=lean-c/install --with-cloog=infra
--with-ppl=infra --with-gmp=infra --with-mpfr=infra --with-mpc=infra
--disable-bootstrap --enable-checking=yes,rtl --enable-languages=c

[Bug tree-optimization/65661] ICE in operator[], at vec.h:736, called from partition_view_init

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65661

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
x86_64?

[Bug tree-optimization/65661] ICE in operator[], at vec.h:736, called from partition_view_init

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65661

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #5 from vries at gcc dot gnu.org ---
I ran into this problem with what I thought was a clean rebuild, but after
doing another clean rebuild, it doesn't reproduce anymore. So it must have been
my error.

Marking resolved, invalid.