https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83268
Bug ID: 83268
Summary: internal compiler error: in lambda_expr_this_capture,
at cp/lambda.c:785
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: zealot0630 at gmail dot com
Target Milestone: ---
The following C++14 file produces an internal compiler error.
#include <functional>
int t(std::function<void(int&&)>&&);
struct X {
int f();
int operator()() {
return t([&](auto) -> void {
[x = f()]{}();
});
}
};
% g++ -std=c++14 -c bug.cpp
bug.cpp: In instantiation of ‘struct X::operator()()::<lambda(auto:1)> [with
auto:1 = int]::<lambda()>’:
bug.cpp:9:15: required from ‘X::operator()()::<lambda(auto:1)> [with auto:1 =
int]’
/usr/include/c++/7/bits/std_function.h:316:37: required from ‘static void
std::_Function_handler<void(_ArgTypes ...), _Functor>::_M_invoke(const
std::_Any_data&, _ArgTypes&& ...) [with _Functor =
X::operator()()::<lambda(auto:1)>; _ArgTypes = {int&&}]’
/usr/include/c++/7/bits/std_function.h:694:19: required from
‘std::function<_Res(_ArgTypes ...)>::function(_Functor) [with _Functor =
X::operator()()::<lambda(auto:1)>; <template-parameter-2-2> = void;
<template-parameter-2-3> = void; _Res = void; _ArgTypes = {int&&}]’
bug.cpp:10:4: required from here
bug.cpp:9:10: internal compiler error: in lambda_expr_this_capture, at
cp/lambda.c:785
[x = f()]{}();
~^~
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
