[Bug c++/64029] New: const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[Bug c++/64029] New: const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[narayan_behera at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64029

            Bug ID: 64029
           Summary: const int (&in)[]{1,2,3,4,5}; results in internal
                    compiler error: Segmentation fault
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: narayan_behera at hotmail dot com

Here is a single line program that recreates the bug:

int main() {  const int (&in)[]{1,2,3,4,5};  return 0; }

-------------- g++ diagnostics follows ----------------------------

g++ -std=c++11 -Wall -Wextra -c usearr1.cpp
usearr1.cpp: In function ‘int main()’:
usearr1.cpp:4:15: warning: unused variable ‘in’ [-Wunused-variable]
   const int (&in)[]{1,2,3,4,5};
               ^
usearr1.cpp:4:30: internal compiler error: Segmentation fault
   const int (&in)[]{1,2,3,4,5};
                              ^
0x855784a crash_signal
    .././gcc-4.9.1/gcc/toplev.c:337
0x83e6aca gimplify_decl_expr
    .././gcc-4.9.1/gcc/gimplify.c:1359
0x83e6aca gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
    .././gcc-4.9.1/gcc/gimplify.c:7820
0x83e9c17 gimplify_stmt(tree_node**, gimple_statement_base**)
    .././gcc-4.9.1/gcc/gimplify.c:5373
0x83e7904 gimplify_cleanup_point_expr
    .././gcc-4.9.1/gcc/gimplify.c:5149
0x83e7904 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
    .././gcc-4.9.1/gcc/gimplify.c:7990
0x83e9c17 gimplify_stmt(tree_node**, gimple_statement_base**)
    .././gcc-4.9.1/gcc/gimplify.c:5373
0x83e81fc gimplify_statement_list
    .././gcc-4.9.1/gcc/gimplify.c:1432
0x83e81fc gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
    .././gcc-4.9.1/gcc/gimplify.c:8042
0x83e9c17 gimplify_stmt(tree_node**, gimple_statement_base**)
    .././gcc-4.9.1/gcc/gimplify.c:5373
0x83ea4a8 gimplify_bind_expr
    .././gcc-4.9.1/gcc/gimplify.c:1099
0x83e784e gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
    .././gcc-4.9.1/gcc/gimplify.c:7824
0x83e9c17 gimplify_stmt(tree_node**, gimple_statement_base**)
    .././gcc-4.9.1/gcc/gimplify.c:5373
0x83e81fc gimplify_statement_list
    .././gcc-4.9.1/gcc/gimplify.c:1432
0x83e81fc gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
    .././gcc-4.9.1/gcc/gimplify.c:8042
0x83e9c17 gimplify_stmt(tree_node**, gimple_statement_base**)
    .././gcc-4.9.1/gcc/gimplify.c:5373
0x83eaaba gimplify_body(tree_node*, bool)
    .././gcc-4.9.1/gcc/gimplify.c:8734
0x83eada0 gimplify_function_tree(tree_node*)
    .././gcc-4.9.1/gcc/gimplify.c:8887
0x82e3cf8 analyze_function
    .././gcc-4.9.1/gcc/cgraphunit.c:649
0x82e4c86 analyze_functions
    .././gcc-4.9.1/gcc/cgraphunit.c:1017
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 testsuite/63971] Some of  gcc.target/aarch64/test_frame_*.c tests fail now
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idc971

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed.

[Bug c++/64029] [4.9/5 Regression] const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64029

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-11-23
      Known to work|                            |4.8.2
            Summary|const int                   |[4.9/5 Regression] const
                   |(&in)[]{1,2,3,4,5}; results |int (&in)[]{1,2,3,4,5};
                   |in internal compiler error: |results in internal
                   |Segmentation fault          |compiler error:
                   |                            |Segmentation fault
     Ever confirmed|0                           |1
      Known to fail|                            |4.9.2, 5.0

[Bug c++/64029] [4.9/5 Regression] const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64029

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jason at gcc dot gnu.org
   Target Milestone|---                         |4.9.3

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r208002.  The ICE is because the gimplifier sees a VAR_DECL with
const int[<unknown>] type (incomplete ARRAY_TYPE with no TYPE_SIZE*).

[Bug c++/64029] [4.9/5 Regression] const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64029

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2

[Bug c++/64029] [4.9/5 Regression] const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64029

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Dec  4 20:37:30 2014
New Revision: 218402

URL: https://gcc.gnu.org/viewcvs?rev=218402&root=gcc&view=rev
Log:
    PR c++/64029
    * decl.c (grok_reference_init): Complete array type.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/initlist89.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c

[Bug c++/64029] [4.9 Regression] const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64029

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
      Known to work|                            |5.0
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org
            Summary|[4.9/5 Regression] const    |[4.9 Regression] const int
                   |int (&in)[]{1,2,3,4,5};     |(&in)[]{1,2,3,4,5}; results
                   |results in internal         |in internal compiler error:
                   |compiler error:             |Segmentation fault
                   |Segmentation fault          |
      Known to fail|5.0                         |

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk for now.

[Bug c++/64029] [4.9 Regression] const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64029

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Jan  7 15:18:16 2015
New Revision: 219307

URL: https://gcc.gnu.org/viewcvs?rev=219307&root=gcc&view=rev
Log:
    PR c++/64029
    * decl.c (grok_reference_init): Complete array type.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/g++.dg/cpp0x/initlist89.C
Modified:
    branches/gcc-4_9-branch/gcc/cp/ChangeLog
    branches/gcc-4_9-branch/gcc/cp/decl.c

[Bug c++/64029] [4.9 Regression] const int (&in)[]{1,2,3,4,5}; results in internal compiler error: Segmentation fault

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64029

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 4.9.3.