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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/51227] New: [c++0x] ICE with invalid parameter in lambda expression
Date: Sat, 19 Nov 2011 20:40:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51227

             Bug #: 51227
           Summary: [c++0x] ICE with invalid parameter in lambda
                    expression
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: reichelt@gcc.gnu.org


The following invalid code snippet triggers an ICE when compiled with
"-std=c++0x" since the introduction of lambda expressions (GCC 4.5.0):

====================================
template<int> int foo()
{
  [] (void i) { return 0; } (0);
}

void bar()
{
  foo<0>();
}
====================================

bug.cc: In function 'int foo()':
bug.cc:3:12: error: 'i' has incomplete type
bug.cc:3:13: error: invalid use of 'void'
bug.cc: In instantiation of 'struct foo() [with int <anonymous> =
0]::<lambda>':
bug.cc:3:3:   required from 'int foo() [with int <anonymous> = 0]'
bug.cc:8:10:   required from here
bug.cc:3:4: internal compiler error: Segmentation fault
Please submit a full bug report, [etc.]