https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85776
Bug ID: 85776
Summary: ICE when compiling `boost::thread` with `-std=c++11`
on mingw-w64
Product: gcc
Version: 8.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lh_mouse at 126 dot com
Target Milestone: ---
Created attachment 44129
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44129&action=edit
(though not minimal) testcase
Compiling the attached program using `-std=c++11` with boost 1.66 results in an
ICE:
```
E:\Desktop>g++ -std=c++11 test.cc
In file included from
C:/MinGW/MSYS2/mingw32/include/boost/thread/detail/thread.hpp:23,
from
C:/MinGW/MSYS2/mingw32/include/boost/thread/thread_only.hpp:22,
from
C:/MinGW/MSYS2/mingw32/include/boost/thread/thread.hpp:12,
from C:/MinGW/MSYS2/mingw32/include/boost/thread.hpp:13,
from test.cc:1:
C:/MinGW/MSYS2/mingw32/include/boost/thread/detail/invoke.hpp: In function
'decltype (*(forward<A0>)(boost::detail::invoke::a0).*boost::detail::invoke::f)
boost::detail::invoke(Fp&&, A0&&) [with Fp = void (A::*)(); A0 = A*]':
C:/MinGW/MSYS2/mingw32/include/boost/thread/detail/invoke.hpp:102:43: internal
compiler error: in gimplify_expr, at gimplify.c:12188
return (*boost::forward<A0>(a0)).*f;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc-mcf.lhmouse.com/> for instructions.
```
This is confirmed to be the case on 5.4 (native and cross from Linux) and 8.1.1
(native).
Preprocessing the testcase results in such an enormous file (5+ MiB) that
CReduce has been unable to reduce it at all (it resulted in a `}` only, which
was apparently a bug).
