[Bug go/81946] New: runtime.inc:782:28: error: field ‘__sem_lock’ has incomplete type

["mfe at live dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81946

            Bug ID: 81946
           Summary: runtime.inc:782:28: error: field ‘__sem_lock’ has
                    incomplete type
           Product: gcc
           Version: 7.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: go
          Assignee: ian at airs dot com
          Reporter: mfe at live dot de
                CC: cmang at google dot com
  Target Milestone: ---

Hi,

I was able to build gcc 7.1.0 with the enabled languages c and c++.
Unfortunately building the last gcc 7.2. with enabling the language go results
in "runtime.inc:782:28: error: field ‘__sem_lock’ has incomplete type"

the exact version of GCC:
gcc-7.1.0

the system type:
NetgearReadyNAS Duo
(http://wiki.dietpc.org/index.php/DIET-PC_on_SPARC_ReadyNAS)

the options given when GCC was configured/built:
nas-02-90-38:/media/gcc-7.2.0-go# ../gcc-7.2.0/configure
CC=/opt/gcc-7.1/bin/gcc CXX=/opt/gcc-7.1/bin/g++ --enable-languages=c,c++,go
--prefix=/opt/gcc-7.2.0  --with-cpu=v7 --disable-libstdcxx-pch
--disable-linux-futex --disable-libsanitizer --enable-__cxa_atexit
--with-system-zlib --enable-nls --enable-clocale=gnu --enable-debug 
--disable-doc --disable-libcilkrts --disable-libitm


## --------- ##
## Platform. ##
## --------- ##

hostname = nas-02-90-38
uname -m = padre
uname -r = 2.6.17.14ReadyNAS
uname -s = Linux
uname -v = #1 Wed Jun 20 20:08:20 PDT 2012

the complete command line that triggers the bug;
/usr/local/bin/make

the compiler output (error messages, warnings, etc.);
[...]
libtool: compile:  /media/gcc-7.2.0-go/./gcc/gccgo -B/media/gcc-7.2.0-go/./gcc/
-B/opt/gcc-7.2.0/sparc-unknown-linux-gnu/bin/
-B/opt/gcc-7.2.0/sparc-unknown-linux-gnu/lib/ -isystem
/opt/gcc-7.2.0/sparc-unknown-linux-gnu/include -isystem
/opt/gcc-7.2.0/sparc-unknown-linux-gnu/sys-include -O2 -g -I . -c
-fgo-pkgpath=runtime -fgo-c-header=runtime.inc.tmp -fgo-compiling-runtime
../../../gcc-7.2.0/libgo/go/runtime/alg.go
../../../gcc-7.2.0/libgo/go/runtime/cgo_gccgo.go
../../../gcc-7.2.0/libgo/go/runtime/chan.go
../../../gcc-7.2.0/libgo/go/runtime/compiler.go
../../../gcc-7.2.0/libgo/go/runtime/cpuprof.go
../../../gcc-7.2.0/libgo/go/runtime/cputicks.go
../../../gcc-7.2.0/libgo/go/runtime/debug.go
../../../gcc-7.2.0/libgo/go/runtime/env_posix.go
../../../gcc-7.2.0/libgo/go/runtime/error.go
../../../gcc-7.2.0/libgo/go/runtime/extern.go
../../../gcc-7.2.0/libgo/go/runtime/ffi.go
../../../gcc-7.2.0/libgo/go/runtime/hash32.go
../../../gcc-7.2.0/libgo/go/runtime/hashmap.go
../../../gcc-7.2.0/libgo/go/runtime/hashmap_fast.go
../../../gcc-7.2.0/libgo/go/runtime/iface.go
../../../gcc-7.2.0/libgo/go/runtime/lfstack.go
../../../gcc-7.2.0/libgo/go/runtime/lfstack_32bit.go
../../../gcc-7.2.0/libgo/go/runtime/lock_futex.go
../../../gcc-7.2.0/libgo/go/runtime/mcache.go
../../../gcc-7.2.0/libgo/go/runtime/mprof.go
../../../gcc-7.2.0/libgo/go/runtime/msan0.go
../../../gcc-7.2.0/libgo/go/runtime/mstats.go
../../../gcc-7.2.0/libgo/go/runtime/netpoll.go
../../../gcc-7.2.0/libgo/go/runtime/netpoll_epoll.go
../../../gcc-7.2.0/libgo/go/runtime/os_gccgo.go
../../../gcc-7.2.0/libgo/go/runtime/os_linux.go
../../../gcc-7.2.0/libgo/go/runtime/panic.go
../../../gcc-7.2.0/libgo/go/runtime/print.go
../../../gcc-7.2.0/libgo/go/runtime/proc.go
../../../gcc-7.2.0/libgo/go/runtime/race0.go
../../../gcc-7.2.0/libgo/go/runtime/rdebug.go
../../../gcc-7.2.0/libgo/go/runtime/runtime.go
../../../gcc-7.2.0/libgo/go/runtime/runtime1.go
../../../gcc-7.2.0/libgo/go/runtime/runtime2.go
../../../gcc-7.2.0/libgo/go/runtime/select.go
../../../gcc-7.2.0/libgo/go/runtime/sema.go
../../../gcc-7.2.0/libgo/go/runtime/signal_gccgo.go
../../../gcc-7.2.0/libgo/go/runtime/signal_sighandler.go
../../../gcc-7.2.0/libgo/go/runtime/signal_unix.go
../../../gcc-7.2.0/libgo/go/runtime/sigqueue.go
../../../gcc-7.2.0/libgo/go/runtime/sizeclasses.go
../../../gcc-7.2.0/libgo/go/runtime/slice.go
../../../gcc-7.2.0/libgo/go/runtime/string.go
../../../gcc-7.2.0/libgo/go/runtime/stubs.go
../../../gcc-7.2.0/libgo/go/runtime/stubs2.go
../../../gcc-7.2.0/libgo/go/runtime/symtab.go
../../../gcc-7.2.0/libgo/go/runtime/time.go
../../../gcc-7.2.0/libgo/go/runtime/trace.go
../../../gcc-7.2.0/libgo/go/runtime/traceback_gccgo.go
../../../gcc-7.2.0/libgo/go/runtime/type.go
../../../gcc-7.2.0/libgo/go/runtime/typekind.go
../../../gcc-7.2.0/libgo/go/runtime/unaligned2.go
../../../gcc-7.2.0/libgo/go/runtime/utf8.go
../../../gcc-7.2.0/libgo/go/runtime/write_err.go runtime_sysinfo.go sigtab.go
-o runtime.o >/dev/null 2>&1
rm -f runtime.inc.tmp2
grep -v "#define _" runtime.inc.tmp | grep -v "#define [cm][01234] " >
runtime.inc.tmp2
for pattern in '_[GP][a-z]' _Max _Lock _Sig _Trace _MHeap _Num; do \
  grep "#define $pattern" runtime.inc.tmp >> runtime.inc.tmp2; \
done
/bin/sh ../../../gcc-7.2.0/libgo/mvifdiff.sh runtime.inc.tmp2 runtime.inc
echo timestamp > s-runtime-inc
/media/gcc-7.2.0-go/./gcc/xgcc -B/media/gcc-7.2.0-go/./gcc/
-B/opt/gcc-7.2.0/sparc-unknown-linux-gnu/bin/
-B/opt/gcc-7.2.0/sparc-unknown-linux-gnu/lib/ -isystem
/opt/gcc-7.2.0/sparc-unknown-linux-gnu/include -isystem
/opt/gcc-7.2.0/sparc-unknown-linux-gnu/sys-include    -DHAVE_CONFIG_H -I.
-I../../../gcc-7.2.0/libgo  -I ../../../gcc-7.2.0/libgo/runtime
-I../../../gcc-7.2.0/libgo/../libffi/include -I../libffi/include -pthread 
-fexceptions -fnon-call-exceptions -fplan9-extensions  -Wall -Wextra
-Wwrite-strings -Wcast-qual -Werror   -D_GNU_SOURCE -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -I ../../../gcc-7.2.0/libgo/../libgcc -I
../../../gcc-7.2.0/libgo/../libbacktrace -I ../../gcc/include -fPIC -g -O2 -MT
libgobegin_a-go-main.o -MD -MP -MF .deps/libgobegin_a-go-main.Tpo -c -o
libgobegin_a-go-main.o `test -f 'runtime/go-main.c' || echo
'../../../gcc-7.2.0/libgo/'`runtime/go-main.c
In file included from ../../../gcc-7.2.0/libgo/runtime/runtime.h:113:0,
                 from ../../../gcc-7.2.0/libgo/runtime/go-main.c:17:
./runtime.inc:782:28: error: field ‘__sem_lock’ has incomplete type
  struct __pthread_fastlock __sem_lock;
                            ^~~~~~~~~~
make[4]: *** [Makefile:1580: libgobegin_a-go-main.o] Error 1
make[4]: Leaving directory
'/c/media/gcc-7.2.0-go/sparc-unknown-linux-gnu/libgo'
make[3]: *** [Makefile:2746: all-recursive] Error 1
make[3]: Leaving directory
'/c/media/gcc-7.2.0-go/sparc-unknown-linux-gnu/libgo'
make[2]: *** [Makefile:1344: all] Error 2
make[2]: Leaving directory
'/c/media/gcc-7.2.0-go/sparc-unknown-linux-gnu/libgo'
make[1]: *** [Makefile:18527: all-target-libgo] Error 2
make[1]: Leaving directory '/c/media/gcc-7.2.0-go'
make: *** [Makefile:931: all] Error 2

I would love to see go on my sparc machine.