Beyond static_assert failures and overflow/underflow of long long
it also it complains in some cases about:
static_assert expression is not an integral constant expression
[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.]
Context:
# uname -apKU
FreeBSD FreeBSDx64OPC 12.0-CURRENT FreeBSD 12.0-CURRENT r320458M amd64 amd64
1200036 1200036
buildworld for TARGET_ARCH=powerpc resulted in:
--- 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
make[5]: stopped in /usr/src/lib/libc++experimental
.ERROR_TARGET='filesystem/operations.o'
.ERROR_META_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'
.MAKE.LEVEL='5'
MAKEFILE=''
.MAKE.MODE='meta missing-filemon=yes missing-meta=yes silent=yes verbose'
_ERROR_CMD='c++ -target powerpc-unknown-freebsd12.0
--sysroot=/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=c++14
-Wno-c++11-extensions -c
/usr/src/contrib/libc++/src/experimental/filesystem/operations.cpp -o
filesystem/operations.o;'
.CURDIR='/usr/src/lib/libc++experimental'
# 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=/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=c++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
Build configuration:
# 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
# more
~/sys_build_scripts.amd64-host/make_powerpcvtsc_nodebug_clang_bootstrap-amd64-host.sh
kldload -n filemon && \
script
~/sys_typescripts/typescript_make_powerpcvtsc_nodebug_clang_bootstrap-amd64-host-$(date
+%Y-%m-%d:%H:%M:%S) \
env __MAKE_CONF="/root/src.configs/make.conf" SRCCONF="/dev/null"
SRC_ENV_CONF="/root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host" \
WITH_META_MODE=yes \
MAKEOBJDIRPREFIX="/usr/obj/powerpcvtsc_clang" \
make $*
# more /root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host
TO_TYPE=powerpc
#
KERNCONF=GENERICvtsc-NODBG
TARGET=${TO_TYPE}
.if ${.MAKE.LEVEL} == 0
TARGET_ARCH=${TO_TYPE}
.export TARGET_ARCH
.endif
#
WITH_CROSS_COMPILER=
WITHOUT_SYSTEM_COMPILER=
#
WITH_LIBCPLUSPLUS=
WITH_BINUTILS_BOOTSTRAP=
WITH_ELFTOOLCHAIN_BOOTSTRAP=
WITH_CLANG_BOOTSTRAP=
WITH_CLANG=
WITH_CLANG_IS_CC=
WITH_CLANG_FULL=
WITH_CLANG_EXTRAS=
WITH_LLD=
# lldb requires missing atomic 8-byte operations for powerpc (non-64)
WITHOUT_LLDB=
#
WITH_BOOT=
WITHOUT_LIB32=
#
WITHOUT_GCC_BOOTSTRAP=
WITHOUT_GCC=
WITHOUT_GCC_IS_CC=
WITHOUT_GNUCXX=
#
NO_WERROR=
#
# 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=
MALLOC_PRODUCTION=
#
WITH_REPRODUCIBLE_BUILD=
WITH_DEBUG_FILES=
===
Mark Millard
markmi at dsl-only.net
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