[Bug c++/67846] New: ICE on code with lambda expression on x86_64-linux-gnu in check_return_expr, at cp/typeck.c:8609

[su at cs dot ucdavis.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67846

            Bug ID: 67846
           Summary: ICE on code with lambda expression on x86_64-linux-gnu
                    in check_return_expr, at cp/typeck.c:8609
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: su at cs dot ucdavis.edu
  Target Milestone: ---

The following code causes an ICE when compiled with the current gcc trunk on
x86_64-linux-gnu.  


$ g++-trunk -v
Using built-in specs.
COLLECT_GCC=g++-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151004 (experimental) [trunk revision 228457] (GCC) 
$ 
$ g++-trunk -c small.cc
small.cc: In lambda function:
small.cc:5:23: error: invalid use of member function (did you forget the ‘()’
?)
     [=] { return foo; };
                       ^
small.cc:5:23: internal compiler error: in check_return_expr, at
cp/typeck.c:8609
0x723c8d check_return_expr(tree_node*, bool*)
        ../../gcc-trunk/gcc/cp/typeck.c:8609
0x7610be finish_return_stmt(tree_node*)
        ../../gcc-trunk/gcc/cp/semantics.c:873
0x705e44 cp_parser_lambda_body
        ../../gcc-trunk/gcc/cp/parser.c:9855
0x705e44 cp_parser_lambda_expression
        ../../gcc-trunk/gcc/cp/parser.c:9360
0x6d92b7 cp_parser_primary_expression
        ../../gcc-trunk/gcc/cp/parser.c:4713
0x6e410b cp_parser_postfix_expression
        ../../gcc-trunk/gcc/cp/parser.c:6404
0x6e4c99 cp_parser_unary_expression
        ../../gcc-trunk/gcc/cp/parser.c:7689
0x6e58d7 cp_parser_binary_expression
        ../../gcc-trunk/gcc/cp/parser.c:8442
0x6e5fdf cp_parser_assignment_expression
        ../../gcc-trunk/gcc/cp/parser.c:8700
0x6e89f1 cp_parser_expression
        ../../gcc-trunk/gcc/cp/parser.c:8854
0x6e9cb6 cp_parser_expression_statement
        ../../gcc-trunk/gcc/cp/parser.c:10270
0x6ff07a cp_parser_statement
        ../../gcc-trunk/gcc/cp/parser.c:10121
0x6ffee9 cp_parser_statement_seq_opt
        ../../gcc-trunk/gcc/cp/parser.c:10393
0x70004b cp_parser_compound_statement
        ../../gcc-trunk/gcc/cp/parser.c:10347
0x70025b cp_parser_function_body
        ../../gcc-trunk/gcc/cp/parser.c:20112
0x70025b cp_parser_ctor_initializer_opt_and_function_body
        ../../gcc-trunk/gcc/cp/parser.c:20148
0x7010f9 cp_parser_function_definition_after_declarator
        ../../gcc-trunk/gcc/cp/parser.c:24755
0x704cdc cp_parser_late_parsing_for_member
        ../../gcc-trunk/gcc/cp/parser.c:25559
0x6e0199 cp_parser_class_specifier_1
        ../../gcc-trunk/gcc/cp/parser.c:20972
0x6e0199 cp_parser_class_specifier
        ../../gcc-trunk/gcc/cp/parser.c:20998
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.
$ 


--------------------------


class A
{
  void foo ()
  {
    [=] { return foo; };
  }
};