Date: Thu, 29 Jun 2017 02:21:38 -0700 From: Mark Millard <markmi@dsl-only.net> To: Justin Hibbits <jhibbits@FreeBSD.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>, FreeBSD Toolchain <freebsd-toolchain@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: head -r320458 (e.g.) amd64 -> powerpc (32-bit) cross-buildworld fails for time libc++ static_asserts and overflow/underflow of long long (system clang/clang++ 4 based build) Message-ID: <5B12D9A6-C9A2-4B0D-B32D-D04D7DB1E3BC@dsl-only.net> In-Reply-To: <D8AB364D-9E4B-470A-A858-842E73530C3B@dsl-only.net> References: <D8AB364D-9E4B-470A-A858-842E73530C3B@dsl-only.net>
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[TARGET_ARCH=3Dpowerpc64 fails similarly in its world32
part of its build.]
On 2017-Jun-29, at 1:33 AM, Mark Millard <markmi@dsl-only.net> wrote:
> Beyond static_assert failures and overflow/underflow of long long
> it also it complains in some cases about:
>=20
> static_assert expression is not an integral constant expression
>=20
>=20
> [I will note that attempting a gcc 4.2.1 build did not
> stop and report such things for its libstdc++. The below
> is somehow libc++ and/or clang 4 specific.]
>=20
>=20
> Context:
>=20
> # uname -apKU
> FreeBSD FreeBSDx64OPC 12.0-CURRENT FreeBSD 12.0-CURRENT r320458M =
amd64 amd64 1200036 1200036
>=20
> buildworld for TARGET_ARCH=3Dpowerpc resulted in:
>=20
> --- filesystem/operations.o ---
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:579:1: =
error: static_assert failed ""
> static_assert(is_representable({max_time_t, 999999999}), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:580:1: =
error: static_assert failed ""
> static_assert(is_representable({max_time_t, 1000000000}), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:581:1: =
error: static_assert failed ""
> static_assert(is_representable({min_time_t, 0}), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:603:1: =
error: static_assert failed ""
> static_assert(!is_representable(file_time_type::max()), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:604:1: =
error: static_assert failed ""
> static_assert(!is_representable(file_time_type::min()), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:605:15:=
error: static_assert expression is not an integral constant expression
> static_assert(is_representable(file_time_type(seconds(max_time_t))), =
"");
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/src/contrib/libc++/include/chrono:386:59: note: value =
9223372036854775807000000 is outside the range of representable values =
of type 'long long'
> static_cast<_Ct>(__fd.count()) * =
static_cast<_Ct>(_Period::num)));
> ^
> /usr/src/contrib/libc++/include/chrono:413:12: note: in call to =
'&__duration_cast<duration<long long, std::__1::ratio<1, 1> >, =
std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000> > =
>()->operator()(seconds(max_time_t))'
> return __duration_cast<duration<_Rep, _Period>, =
_ToDuration>()(__fd);
> ^
> /usr/src/contrib/libc++/include/chrono:560:26: note: in call to =
'duration_cast(seconds(max_time_t))'
> : =
__rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {}
> ^
> /usr/src/contrib/libc++/include/__config:390:15: note: expanded from =
macro '_VSTD'
> #define _VSTD std::_LIBCPP_NAMESPACE
> ^
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:605:47:=
note: in call to 'duration(seconds(max_time_t), 0)'
> static_assert(is_representable(file_time_type(seconds(max_time_t))), =
"");
> ^
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:606:15:=
error: static_assert expression is not an integral constant expression
> static_assert(is_representable(file_time_type(seconds(min_time_t))), =
"");
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/src/contrib/libc++/include/chrono:386:59: note: value =
-9223372036854775808000000 is outside the range of representable values =
of type 'long long'
> static_cast<_Ct>(__fd.count()) * =
static_cast<_Ct>(_Period::num)));
> ^
> /usr/src/contrib/libc++/include/chrono:413:12: note: in call to =
'&__duration_cast<duration<long long, std::__1::ratio<1, 1> >, =
std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000> > =
>()->operator()(seconds(min_time_t))'
> return __duration_cast<duration<_Rep, _Period>, =
_ToDuration>()(__fd);
> ^
> /usr/src/contrib/libc++/include/chrono:560:26: note: in call to =
'duration_cast(seconds(min_time_t))'
> : =
__rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {}
> ^
> /usr/src/contrib/libc++/include/__config:390:15: note: expanded from =
macro '_VSTD'
> #define _VSTD std::_LIBCPP_NAMESPACE
> ^
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:606:47:=
note: in call to 'duration(seconds(min_time_t), 0)'
> static_assert(is_representable(file_time_type(seconds(min_time_t))), =
"");
> ^
> . . .
> --- lib__L ---
> 7 errors generated.
> *** [filesystem/operations.o] Error code 1
>=20
> make[5]: stopped in /usr/src/lib/libc++experimental
> .ERROR_TARGET=3D'filesystem/operations.o'
> =
.ERROR_META_FILE=3D'/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/lib=
/libc++experimental/_usr_obj_powerpcvtsc_clang_powerpc.powerpc_usr_src_lib=
_libc++experimental_filesystem_operations.o.meta'
> .MAKE.LEVEL=3D'5'
> MAKEFILE=3D''
> .MAKE.MODE=3D'meta missing-filemon=3Dyes missing-meta=3Dyes silent=3Dyes=
verbose'
> _ERROR_CMD=3D'c++ -target powerpc-unknown-freebsd12.0 =
--sysroot=3D/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/tmp =
-B/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/tmp/usr/bin -O2 =
-pipe -fstack-protector-strong -Wno-empty-body -Wno-string-plus-int =
-Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value =
-Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion =
-Wno-unused-local-typedef -Wno-address-of-packed-member -Wno-switch =
-Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses =
-Qunused-arguments -fpic -isystem /usr/src/contrib/libc++/include =
-nostdinc++ -nostdlib -D_LIBCPP_BUILDING_LIBRARY -DLIBCXXRT -std=3Dc++14 =
-Wno-c++11-extensions -c =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp -o =
filesystem/operations.o;'
> .CURDIR=3D'/usr/src/lib/libc++experimental'
>=20
>=20
> # more =
/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/lib/libc++experimental/=
_usr_obj_powerpcvtsc_clang_powerpc.powerpc_usr_src_lib_libc++experimental_=
filesystem_operations.o.meta
> # Meta data file =
/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/lib/libc++experimental/=
_usr_obj_powerpcvtsc_clang_powerpc.powerpc_usr_src_lib_libc++experimental_=
filesystem_operations.o.meta
> CMD c++ -target powerpc-unknown-freebsd12.0 =
--sysroot=3D/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/tmp =
-B/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/tmp/usr/bin -O2 =
-pipe -fstack-protector-strong -Wno-empty-body -Wno-string-plus-int =
-Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value =
-Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion =
-Wno-unused-local-typedef -Wno-address-of-packed-member -Wno-switch =
-Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses =
-Qunused-arguments -fpic -isystem /usr/src/contrib/libc++/include =
-nostdinc++ -nostdlib -D_LIBCPP_BUILDING_LIBRARY -DLIBCXXRT -std=3Dc++14 =
-Wno-c++11-extensions -c =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp -o =
filesystem/operations.o
> CWD =
/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/lib/libc++experimental
> TARGET filesystem/operations.o
> -- command output --
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:579:1: =
error: static_assert failed ""
> static_assert(is_representable({max_time_t, 999999999}), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:580:1: =
error: static_assert failed ""
> static_assert(is_representable({max_time_t, 1000000000}), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:581:1: =
error: static_assert failed ""
> static_assert(is_representable({min_time_t, 0}), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:603:1: =
error: static_assert failed ""
> static_assert(!is_representable(file_time_type::max()), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:604:1: =
error: static_assert failed ""
> static_assert(!is_representable(file_time_type::min()), "");
> ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:605:15:=
error: static_assert expression is not an integral constant expression
> static_assert(is_representable(file_time_type(seconds(max_time_t))), =
"");
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/src/contrib/libc++/include/chrono:386:59: note: value =
9223372036854775807000000 is outside the range of representable values =
of type 'long long'
> static_cast<_Ct>(__fd.count()) * =
static_cast<_Ct>(_Period::num)));
> ^
> /usr/src/contrib/libc++/include/chrono:413:12: note: in call to =
'&__duration_cast<duration<long long, std::__1::ratio<1, 1> >, =
std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000> > =
>()->operator()(seconds(max_time_t))'
> return __duration_cast<duration<_Rep, _Period>, =
_ToDuration>()(__fd);
> ^
> /usr/src/contrib/libc++/include/chrono:560:26: note: in call to =
'duration_cast(seconds(max_time_t))'
> : =
__rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {}
> ^
> /usr/src/contrib/libc++/include/__config:390:15: note: expanded from =
macro '_VSTD'
> #define _VSTD std::_LIBCPP_NAMESPACE
> ^
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:605:47:=
note: in call to 'duration(seconds(max_time_t), 0)'
> static_assert(is_representable(file_time_type(seconds(max_time_t))), =
"");
> ^
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:606:15:=
error: static_assert expression is not an integral constant expression
> static_assert(is_representable(file_time_type(seconds(min_time_t))), =
"");
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/src/contrib/libc++/include/chrono:386:59: note: value =
-9223372036854775808000000 is outside the range of representable values =
of type 'long long'
> static_cast<_Ct>(__fd.count()) * =
static_cast<_Ct>(_Period::num)));
> ^
> /usr/src/contrib/libc++/include/chrono:413:12: note: in call to =
'&__duration_cast<duration<long long, std::__1::ratio<1, 1> >, =
std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000> > =
>()->operator()(seconds(min_time_t))'
> return __duration_cast<duration<_Rep, _Period>, =
_ToDuration>()(__fd);
> ^
> /usr/src/contrib/libc++/include/chrono:560:26: note: in call to =
'duration_cast(seconds(min_time_t))'
> : =
__rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {}
> ^
> /usr/src/contrib/libc++/include/__config:390:15: note: expanded from =
macro '_VSTD'
> #define _VSTD std::_LIBCPP_NAMESPACE
> ^
> =
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp:606:47:=
note: in call to 'duration(seconds(min_time_t), 0)'
> static_assert(is_representable(file_time_type(seconds(min_time_t))), =
"");
> ^
> 7 errors generated.
> *** Error code 1
>=20
>=20
>=20
> Build configuration:
>=20
>=20
> # svnlite info /usr/src/ | grep "Re[plv]"
> Relative URL: ^/head
> Repository Root: svn://svn.freebsd.org/base
> Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
> Revision: 320458
> Last Changed Rev: 320458
>=20
>=20
> # more =
~/sys_build_scripts.amd64-host/make_powerpcvtsc_nodebug_clang_bootstrap-am=
d64-host.sh=20
> kldload -n filemon && \
> script =
~/sys_typescripts/typescript_make_powerpcvtsc_nodebug_clang_bootstrap-amd6=
4-host-$(date +%Y-%m-%d:%H:%M:%S) \
> env __MAKE_CONF=3D"/root/src.configs/make.conf" SRCCONF=3D"/dev/null" =
SRC_ENV_CONF=3D"/root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-h=
ost" \
> WITH_META_MODE=3Dyes \
> MAKEOBJDIRPREFIX=3D"/usr/obj/powerpcvtsc_clang" \
> make $*
>=20
>=20
> # more /root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host
> TO_TYPE=3Dpowerpc
> #
> KERNCONF=3DGENERICvtsc-NODBG
> TARGET=3D${TO_TYPE}
> .if ${.MAKE.LEVEL} =3D=3D 0
> TARGET_ARCH=3D${TO_TYPE}
> .export TARGET_ARCH
> .endif
> #
> WITH_CROSS_COMPILER=3D
> WITHOUT_SYSTEM_COMPILER=3D
> #
> WITH_LIBCPLUSPLUS=3D
> WITH_BINUTILS_BOOTSTRAP=3D
> WITH_ELFTOOLCHAIN_BOOTSTRAP=3D
> WITH_CLANG_BOOTSTRAP=3D
> WITH_CLANG=3D
> WITH_CLANG_IS_CC=3D
> WITH_CLANG_FULL=3D
> WITH_CLANG_EXTRAS=3D
> WITH_LLD=3D
> # lldb requires missing atomic 8-byte operations for powerpc (non-64)
> WITHOUT_LLDB=3D
> #
> WITH_BOOT=3D
> WITHOUT_LIB32=3D
> #
> WITHOUT_GCC_BOOTSTRAP=3D
> WITHOUT_GCC=3D
> WITHOUT_GCC_IS_CC=3D
> WITHOUT_GNUCXX=3D
> #
> NO_WERROR=3D
> #
> # Use WERROR to avoid stopping at the likes of:
> # error: implicit conversion from 'int' to 'int8_t' (aka 'signed =
char') changes value from 128 to -128 [-Werror,-Wconstant-conversion]
> WERROR=3D
> MALLOC_PRODUCTION=3D
> #
> WITH_REPRODUCIBLE_BUILD=3D
> WITH_DEBUG_FILES=3D
The world32 part of a TARGET_ARCH=3Dpowerpc64 cross-buildworld
also gets the same errors.
=3D=3D=3D
Mark Millard
markmi at dsl-only.net
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