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From: "lunow at math dot hu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/64462] New: ICE while compiling lambda using local constexpr reference variable
Date: Thu, 01 Jan 2015 04:52:00 -0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 4.9.2
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X-Bugzilla-Who: lunow at math dot hu-berlin.de
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64462

            Bug ID: 64462
           Summary: ICE while compiling lambda using local constexpr
                    reference variable
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: lunow at math dot hu-berlin.de

The following Code triggers the crash (C++11 mode)

int x = 0;
int z;

int main() {
  constexpr int& y = x;
  [=] { z = y; }();
}

$ g++ gccbug.cpp -std=c++11
gccbug.cpp: In lambda function:
gccbug.cpp:7:11: internal compiler error: in cp_build_modify_expr, at
cp/typeck.c:7446
   [=] { z = y; }();
           ^
Please submit a full bug report,
...