[Bug c++/57751] New: internal compiler error: in cxx_eval_indirect_ref, at cp/semantics.c:7648

[Bug c++/57751] New: internal compiler error: in cxx_eval_indirect_ref, at cp/semantics.c:7648

[jan.kiszka at siemens dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57751

            Bug ID: 57751
           Summary: internal compiler error: in cxx_eval_indirect_ref, at
                    cp/semantics.c:7648
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jan.kiszka at siemens dot com

Trying to compile code of this pattern

  extern unsigned long ADDR;   

  unsigned long f(){
    const unsigned long* const var=(unsigned long*)(&ADDR);
    const unsigned long retval=var[1];
    return retval;
  }

with gcc 4.8.1 like this

  g++ -c gcc-4.8.1-crash.cpp

we get the following internal error:

gcc-4.8.1-crash.cpp: In function 'long unsigned int f()':
gcc-4.8.1-crash.cpp:5:35: internal compiler error: in cxx_eval_indirect_ref, at
cp/semantics.c:7648
   const unsigned long retval=var[1];
                                   ^
0x5bf32f cxx_eval_indirect_ref
        ../../gcc/cp/semantics.c:7647
0x5bf32f cxx_eval_constant_expression
        ../../gcc/cp/semantics.c:7884
0x5bd9e1 cxx_eval_constant_expression
        ../../gcc/cp/semantics.c:8065
0x5bfbf6 cxx_eval_outermost_constant_expr
        ../../gcc/cp/semantics.c:8136
0x5c0ef8 maybe_constant_init(tree_node*)
        ../../gcc/cp/semantics.c:8264
0x545107 store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
        ../../gcc/cp/typeck2.c:714
0x5125d5 check_initializer
        ../../gcc/cp/decl.c:5728
0x520475 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        ../../gcc/cp/decl.c:6347
0x580b03 cp_parser_init_declarator
        ../../gcc/cp/parser.c:16142
0x58130e cp_parser_simple_declaration
        ../../gcc/cp/parser.c:10670
0x582e10 cp_parser_block_declaration
        ../../gcc/cp/parser.c:10551
0x583e30 cp_parser_declaration_statement
        ../../gcc/cp/parser.c:10195
0x570177 cp_parser_statement
        ../../gcc/cp/parser.c:8966
0x57139e cp_parser_statement_seq_opt
        ../../gcc/cp/parser.c:9238
0x5714be cp_parser_compound_statement
        ../../gcc/cp/parser.c:9192
0x57f638 cp_parser_function_body
        ../../gcc/cp/parser.c:17827
0x57f638 cp_parser_ctor_initializer_opt_and_function_body
        ../../gcc/cp/parser.c:17863
0x58036f cp_parser_function_definition_after_declarator
        ../../gcc/cp/parser.c:21843
0x580f83 cp_parser_function_definition_from_specifiers_and_declarator
        ../../gcc/cp/parser.c:21764
0x580f83 cp_parser_init_declarator
        ../../gcc/cp/parser.c:15922


This doesn't happen when compiling as C or using older gcc (confirmed for 4.5.1
at least).

[Bug c++/57751] [4.7/4.8/4.9 Regression] ICE in cxx_eval_indirect_ref, at cp/semantics.c:7648

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57751

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-06-28
                 CC|                            |paolo.carlini at oracle dot com
      Known to work|                            |4.6.3
            Summary|internal compiler error: in |[4.7/4.8/4.9 Regression]
                   |cxx_eval_indirect_ref, at   |ICE in
                   |cp/semantics.c:7648         |cxx_eval_indirect_ref, at
                   |                            |cp/semantics.c:7648
     Ever confirmed|0                           |1
      Known to fail|                            |4.7.3, 4.8.1, 4.9.0
           Severity|major                       |normal

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
In 4.7.x happens only with -std=c++11

[Bug c++/57751] [4.7/4.8/4.9 Regression] ICE in cxx_eval_indirect_ref, at cp/semantics.c:7648

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57751

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |jason at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org

[Bug c++/57751] [4.7/4.8/4.9 Regression] ICE in cxx_eval_indirect_ref, at cp/semantics.c:7648

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57751

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |4.7.4

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 4.7.4/4.8.1/4.9.

[Bug c++/57751] [4.7/4.8/4.9 Regression] ICE in cxx_eval_indirect_ref, at cp/semantics.c:7648

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57751

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Thanks! Jason, 4.8.1 is already out, I guess you mean 4.8.2.