On 17/03/20 12:01 +0100, Christophe Lyon wrote:
Hi,
On Mon, 16 Mar 2020 at 23:54, Jonathan Wakely via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
The service_already_exists exception type specified in the TS doesn't
have any constructors defined. Since its base class isn't default
constructible, that means has no usable constructors. This may be a
defect in the TS.
This patch fixes it by adding a default constructor, but making it
private. The make_service function is declared as a friend to be able to
call that private constructor.
PR libstdc++/94199
* include/experimental/executor (service_already_exists): Add default
constructor. Declare make_service to be a friend.
* testsuite/experimental/net/execution_context/make_service.cc: New
test.
The new test fails on arm-eabi / aarch64-elf (aka bare-metal / newlib
targets), because:
/arm-none-eabi/libstdc++-v3/include/experimental/executor:514: error:
'mutex' in namespace 'std' does not name a type
/arm-none-eabi/libstdc++-v3/include/experimental/executor:561: error:
'mutex' is not a member of 'std'
[...]
I don't remember what's the usual "fix" for this
I think they are just failing on some targets:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89760
