build fails on AArch64, Fedora 33

[LutzWeischerFujitsu]

[jw@cn06 upc]$ make VERBOSE=1 -j1
[ -f stage_final ] || echo stage3 > stage_final
make[1]: Entering directory '/data/jw/upc'
make[2]: Entering directory '/data/jw/upc'
make[3]: Entering directory '/data/jw/upc'
rm -f stage_current
make[3]: Leaving directory '/data/jw/upc'
make[2]: Leaving directory '/data/jw/upc'
make[2]: Entering directory '/data/jw/upc'
make[3]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libiberty'
make[4]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libiberty/testsuite'
make[4]: Nothing to be done for 'all'.
make[4]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libiberty/testsuite'
make[3]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libiberty'
make[3]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/lto-plugin'
make all-am
make[4]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/lto-plugin'
make[4]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/lto-plugin'
make[3]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/lto-plugin'
make[3]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/intl'
make[3]: Nothing to be done for 'all'.
make[3]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/intl'
make[3]: Entering directory '/data/jw/upc/build-aarch64-unknown-linux-gnu/libiberty'
make[4]: Entering directory '/data/jw/upc/build-aarch64-unknown-linux-gnu/libiberty/testsuite'
make[4]: Nothing to be done for 'all'.
make[4]: Leaving directory '/data/jw/upc/build-aarch64-unknown-linux-gnu/libiberty/testsuite'
make[3]: Leaving directory '/data/jw/upc/build-aarch64-unknown-linux-gnu/libiberty'
make[3]: Entering directory '/data/jw/upc/build-aarch64-unknown-linux-gnu/fixincludes'
make[3]: Nothing to be done for 'all'.
make[3]: Leaving directory '/data/jw/upc/build-aarch64-unknown-linux-gnu/fixincludes'
make[3]: Entering directory '/data/jw/upc/build-aarch64-unknown-linux-gnu/libcpp'
test -f config.h || (rm -f stamp-h1 && make stamp-h1)
make[3]: Leaving directory '/data/jw/upc/build-aarch64-unknown-linux-gnu/libcpp'
make[3]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/zlib'
true "AR_FLAGS=rc" "CC_FOR_BUILD=gcc" "CFLAGS=-g" "CXXFLAGS=-g" "CFLAGS_FOR_BUILD=-g -O2" "CFLAGS_FOR_TARGET=-g -O2" "INSTALL=/usr/bin/install -c" "INSTALL_DATA=/usr/bin/install -c -m 644" "INSTALL_PROGRAM=/usr/bin/install -c" "INSTALL_SCRIPT=/usr/bin/install -c" "LDFLAGS=" "LIBCFLAGS=-g -O2" "LIBCFLAGS_FOR_TARGET=-g -O2" "MAKE=make" "MAKEINFO=/data/jw/upc/missing makeinfo --split-size=5000000 --split-size=5000000 --split-size=5000000 " "PICFLAG=" "PICFLAG_FOR_TARGET=" "SHELL=/bin/sh" "EXPECT=expect" "RUNTEST=runtest" "RUNTESTFLAGS=" "exec_prefix=/usr/local" "infodir=/usr/local/share/info" "libdir=/usr/local/lib" "prefix=/usr/local" "tooldir=/usr/local/aarch64-unknown-linux-gnu" "AR=ar" "AS=as" "CC=gcc" "CXX=g++" "LD=ld" "LIBCFLAGS=-g -O2" "NM=nm" "PICFLAG=" "RANLIB=ranlib" "DESTDIR=" DO=all multi-do # make
make[3]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/zlib'
make[3]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libbacktrace'
make all-am
make[4]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libbacktrace'
true DO=all multi-do # make
make[4]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libbacktrace'
make[3]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libbacktrace'
make[3]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libcpp'
test -f config.h || (rm -f stamp-h1 && make stamp-h1)
make[3]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libcpp'
make[3]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libdecnumber'
make[3]: Nothing to be done for 'all'.
make[3]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/libdecnumber'
make[3]: Entering directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/gcc'
g++ -c -g -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common -DHAVE_CONFIG_H -DGENERATOR_FILE -I. -Ibuild -I../.././gcc -I../.././gcc/build -I../.././gcc/../include -I../.././gcc/../libcpp/include
-o build/genpreds.o ../.././gcc/genpreds.c
In file included from ./tm.h:24,
from ../.././gcc/genpreds.c:26:
../.././gcc/config/elfos.h:102:21: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
102 | fprintf ((FILE), "%s"HOST_WIDE_INT_PRINT_UNSIGNED"\n",
| ^
../.././gcc/config/elfos.h:170:24: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
170 | fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",
| ^
In file included from ./tm.h:41,
from ../.././gcc/genpreds.c:26:
../.././gcc/defaults.h:126:24: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
126 | fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",
| ^
In file included from ../.././gcc/real.h:25,
from ../.././gcc/rtl.h:26,
from ../.././gcc/genpreds.c:27:
../.././gcc/wide-int.h:370:10: error: too many template-parameter-lists
370 | struct binary_traits <T1, T2, FLEXIBLE_PRECISION, FLEXIBLE_PRECISION>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:377:10: error: too many template-parameter-lists
377 | struct binary_traits <T1, T2, FLEXIBLE_PRECISION, VAR_PRECISION>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:384:10: error: too many template-parameter-lists
384 | struct binary_traits <T1, T2, FLEXIBLE_PRECISION, CONST_PRECISION>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:394:10: error: too many template-parameter-lists
394 | struct binary_traits <T1, T2, VAR_PRECISION, FLEXIBLE_PRECISION>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:401:10: error: too many template-parameter-lists
401 | struct binary_traits <T1, T2, CONST_PRECISION, FLEXIBLE_PRECISION>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:411:10: error: too many template-parameter-lists
411 | struct binary_traits <T1, T2, CONST_PRECISION, CONST_PRECISION>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:422:10: error: too many template-parameter-lists
422 | struct binary_traits <T1, T2, VAR_PRECISION, VAR_PRECISION>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:886:10: error: too many template-parameter-lists
886 | struct int_traits < generic_wide_int >
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:898:51: error: invalid use of incomplete type 'struct wi::int_traits<generic_wide_int >'
898 | get_precision (const generic_wide_int &x)
| ^
../.././gcc/wide-int.h:349:32: note: declaration of 'struct wi::int_traits<generic_wide_int >'
349 | template struct int_traits;
| ^~~~~~~~~~
../.././gcc/wide-int.h:907:40: error: invalid use of incomplete type 'struct wi::int_traits<generic_wide_int >'
907 | const generic_wide_int &x)
| ^
../.././gcc/wide-int.h:349:32: note: declaration of 'struct wi::int_traits<generic_wide_int >'
349 | template struct int_traits;
| ^~~~~~~~~~
../.././gcc/wide-int.h:965:10: error: too many template-parameter-lists
965 | struct int_traits <wide_int_ref_storage >
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h: In instantiation of 'struct wi::unary_traits<generic_wide_int<wide_int_storage> >':
../.././gcc/wide-int.h:685:3: required from 'class generic_wide_int<wide_int_storage>'
../.././gcc/wide-int.h:1080:14: required from here
../.././gcc/wide-int.h:362:10: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
362 | struct unary_traits : public binary_traits <T, T> {};
| ^~~~~~~~~~~~
../.././gcc/wide-int.h: In instantiation of 'class generic_wide_int<wide_int_storage>':
../.././gcc/wide-int.h:1080:14: required from here
../.././gcc/wide-int.h:685:19: error: no type named 'result_type' in 'struct wi::unary_traits<generic_wide_int<wide_int_storage> >'
685 | UNARY_OPERATOR (operator , bit_not)
| ^~~~~~~~
../.././gcc/wide-int.h:671:38: note: in definition of macro 'UNARY_OPERATOR'
671 | WI_UNARY_RESULT (generic_wide_int) OP () const { return wi::F (*this); }
| ^
../.././gcc/wide-int.h:686:19: error: no type named 'result_type' in 'struct wi::unary_traits<generic_wide_int<wide_int_storage> >'
686 | UNARY_OPERATOR (operator -, neg)
| ^~~~~~~~
../.././gcc/wide-int.h:671:38: note: in definition of macro 'UNARY_OPERATOR'
671 | WI_UNARY_RESULT (generic_wide_int) OP () const { return wi::F (*this); }
| ^~
../.././gcc/wide-int.h:689:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
689 | BINARY_OPERATOR (operator &, bit_and)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:690:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
690 | BINARY_OPERATOR (and_not, bit_and_not)
| ^~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:691:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
691 | BINARY_OPERATOR (operator |, bit_or)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:692:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
692 | BINARY_OPERATOR (or_not, bit_or_not)
| ^~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:693:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
693 | BINARY_OPERATOR (operator ^, bit_xor)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:694:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
694 | BINARY_OPERATOR (operator +, add)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:695:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
695 | BINARY_OPERATOR (operator -, sub)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:696:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_storage> >' used in nested name specifier
696 | BINARY_OPERATOR (operator *, mul)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h: In instantiation of 'struct wi::unary_traits<generic_wide_int<wide_int_ref_storage > >':
../.././gcc/wide-int.h:685:3: required from 'class generic_wide_int<wide_int_ref_storage >'
../.././gcc/wide-int.h:1083:60: required from here
../.././gcc/wide-int.h:362:10: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
362 | struct unary_traits : public binary_traits <T, T> {};
| ^~~~~~~~~~~~
../.././gcc/wide-int.h: In instantiation of 'class generic_wide_int<wide_int_ref_storage >':
../.././gcc/wide-int.h:1083:60: required from here
../.././gcc/wide-int.h:685:19: error: no type named 'result_type' in 'struct wi::unary_traits<generic_wide_int<wide_int_ref_storage > >'
685 | UNARY_OPERATOR (operator , bit_not)
| ^~~~~~~~
../.././gcc/wide-int.h:671:38: note: in definition of macro 'UNARY_OPERATOR'
671 | WI_UNARY_RESULT (generic_wide_int) OP () const { return wi::F (*this); }
| ^
../.././gcc/wide-int.h:686:19: error: no type named 'result_type' in 'struct wi::unary_traits<generic_wide_int<wide_int_ref_storage > >'
686 | UNARY_OPERATOR (operator -, neg)
| ^~~~~~~~
../.././gcc/wide-int.h:671:38: note: in definition of macro 'UNARY_OPERATOR'
671 | WI_UNARY_RESULT (generic_wide_int) OP () const { return wi::F (*this); }
| ^~
../.././gcc/wide-int.h:689:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
689 | BINARY_OPERATOR (operator &, bit_and)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:690:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
690 | BINARY_OPERATOR (and_not, bit_and_not)
| ^~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:691:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
691 | BINARY_OPERATOR (operator |, bit_or)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:692:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
692 | BINARY_OPERATOR (or_not, bit_or_not)
| ^~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:693:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
693 | BINARY_OPERATOR (operator ^, bit_xor)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:694:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
694 | BINARY_OPERATOR (operator +, add)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:695:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
695 | BINARY_OPERATOR (operator -, sub)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:696:20: error: incomplete type 'wi::int_traits<generic_wide_int<wide_int_ref_storage > >' used in nested name specifier
696 | BINARY_OPERATOR (operator *, mul)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:1152:10: error: too many template-parameter-lists
1152 | struct int_traits < fixed_wide_int_storage >
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../.././gcc/wide-int.h:1244:42: error: invalid use of incomplete type 'struct wi::int_traits<fixed_wide_int_storage '
1244 | get_binary_result (const T1 &, const T2 &)
| ^
../.././gcc/wide-int.h:349:32: note: declaration of 'struct wi::int_traits<fixed_wide_int_storage >'
349 | template struct int_traits;
| ^~~~~~~~~~
../.././gcc/wide-int.h: In instantiation of 'struct wi::unary_traits<generic_wide_int<trailing_wide_int_storage> >':
../.././gcc/wide-int.h:685:3: required from 'class generic_wide_int<trailing_wide_int_storage>'
../.././gcc/wide-int.h:1378:56: required from here
../.././gcc/wide-int.h:362:10: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
362 | struct unary_traits : public binary_traits <T, T> {};
| ^~~~~~~~~~~~
../.././gcc/wide-int.h: In instantiation of 'class generic_wide_int<trailing_wide_int_storage>':
../.././gcc/wide-int.h:1378:56: required from here
../.././gcc/wide-int.h:685:19: error: no type named 'result_type' in 'struct wi::unary_traits<generic_wide_int<trailing_wide_int_storage> >'
685 | UNARY_OPERATOR (operator , bit_not)
| ^~~~~~~~
../.././gcc/wide-int.h:671:38: note: in definition of macro 'UNARY_OPERATOR'
671 | WI_UNARY_RESULT (generic_wide_int) OP () const { return wi::F (*this); }
| ^
../.././gcc/wide-int.h:686:19: error: no type named 'result_type' in 'struct wi::unary_traits<generic_wide_int<trailing_wide_int_storage> >'
686 | UNARY_OPERATOR (operator -, neg)
| ^~~~~~~~
../.././gcc/wide-int.h:671:38: note: in definition of macro 'UNARY_OPERATOR'
671 | WI_UNARY_RESULT (generic_wide_int) OP () const { return wi::F (*this); }
| ^~
../.././gcc/wide-int.h:689:20: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
689 | BINARY_OPERATOR (operator &, bit_and)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (*this, c); }
| ^~
../.././gcc/wide-int.h:690:20: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
690 | BINARY_OPERATOR (and_not, bit_and_not)
| ^~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (this, c); }
| ^~
../.././gcc/wide-int.h:691:20: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
691 | BINARY_OPERATOR (operator |, bit_or)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (this, c); }
| ^~
../.././gcc/wide-int.h:692:20: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
692 | BINARY_OPERATOR (or_not, bit_or_not)
| ^~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (this, c); }
| ^~
../.././gcc/wide-int.h:693:20: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
693 | BINARY_OPERATOR (operator ^, bit_xor)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (this, c); }
| ^~
../.././gcc/wide-int.h:694:20: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
694 | BINARY_OPERATOR (operator +, add)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (this, c); }
| ^~
../.././gcc/wide-int.h:695:20: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
695 | BINARY_OPERATOR (operator -, sub)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (this, c); }
| ^~
../.././gcc/wide-int.h:696:20: error: incomplete type 'wi::int_traits<generic_wide_int<trailing_wide_int_storage> >' used in nested name specifier
696 | BINARY_OPERATOR (operator , mul)
| ^~~~~~~~
../.././gcc/wide-int.h:676:5: note: in definition of macro 'BINARY_OPERATOR'
676 | OP (const T &c) const { return wi::F (this, c); }
| ^~
In file included from ../.././gcc/rtl.h:27,
from ../.././gcc/genpreds.c:27:
../.././gcc/vec.h: In instantiation of 'bool vec<T, va_heap, vl_ptr>::reserve(unsigned int, bool) [with T = std::pair<unsigned int, const char>]':
../.././gcc/vec.h:1537:3: required from 'T vec<T, va_heap, vl_ptr>::safe_push(const T&) [with T = std::pair<unsigned int, const char>]'
../.././gcc/genpreds.c:1383:68: required from here
../.././gcc/vec.h:1431:14: warning: 'void memcpy(void, const void, size_t)' writing to an object of type 'struct std::pair<unsigned int, const char>' with no trivial copy-assignment; use copy-assignment or copy-initialization instead [-Wclass-memaccess]
1431 | memcpy (m_vec->address (), oldvec->address (), sizeof (T) * oldsize);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
from /usr/include/c++/10/bits/char_traits.h:39,
from /usr/include/c++/10/string:40,
from ../.././gcc/system.h:201,
from ../.././gcc/genpreds.c:24:
/usr/include/c++/10/bits/stl_pair.h:211:12: note: 'struct std::pair<unsigned int, const char>' declared here
211 | struct pair
| ^~~~
make[3]: *** [Makefile:2436: build/genpreds.o] Error 1
make[3]: Leaving directory '/data/jw/upc/host-aarch64-unknown-linux-gnu/gcc'
make[2]: *** [Makefile:4400: all-stage1-gcc] Error 2
make[2]: Leaving directory '/data/jw/upc'
make[1]: *** [Makefile:22213: stage1-bubble] Error 2
make[1]: Leaving directory '/data/jw/upc'
make: *** [Makefile:915: all] Error 2
[jw@cn06 upc]$

[gary-funck]

GUPC is no longer actively supported and I'm unaware as to whether it was successfully ported to ARM64. That said, this error looks something like the issue described here.
staticfloat/gcc@9480118
Maybe give that fix a try and see if it improves the situation.