After 8189170 and 8189871, Zero fails with:

=== Output from failing command(s) repeated here ===
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_abstractCompiler.o:\n"
* For target hotspot_variant-zero_libjvm_objs_abstractCompiler.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_abstractCompiler.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/genCollectedHeap.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/gcLocker.hpp:29,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/runtime/interfaceSupport.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/prims/methodHandles.hpp:32,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciMethod.hpp:33,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/code/debugInfoRec.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciEnv.hpp:31,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciUtilities.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciNullObject.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciConstant.hpp:29,
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_abstractCompiler.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
   ... (rest of output omitted)
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_abstractInterpreter.o:\n"
* For target hotspot_variant-zero_libjvm_objs_abstractInterpreter.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_abstractInterpreter.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/genCollectedHeap.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/oops/oop.inline.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/memory/metaspaceShared.hpp:32,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/interpreter/abstractInterpreter.cpp:36:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_abstractInterpreter.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_accessBackend.o:\n"
* For target hotspot_variant-zero_libjvm_objs_accessBackend.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_accessBackend.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.inline.hpp:29:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.cpp:26:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_accessBackend.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_accessBarrierSupport.o:\n"
* For target hotspot_variant-zero_libjvm_objs_accessBarrierSupport.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_accessBarrierSupport.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/genCollectedHeap.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/oops/oop.inline.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/classfile/javaClasses.inline.hpp:29,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/accessBarrierSupport.cpp:26:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_accessBarrierSupport.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_accessFlags.o:\n"
* For target hotspot_variant-zero_libjvm_objs_accessFlags.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_accessFlags.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/genCollectedHeap.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/oops/oop.inline.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/utilities/accessFlags.cpp:26:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_accessFlags.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_adaptiveSizePolicy.o:\n"
* For target hotspot_variant-zero_libjvm_objs_adaptiveSizePolicy.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_adaptiveSizePolicy.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/adaptiveSizePolicy.cpp:27:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_adaptiveSizePolicy.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_adjoiningGenerations.o:\n"
* For target hotspot_variant-zero_libjvm_objs_adjoiningGenerations.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_adjoiningGenerations.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/modRefBarrierSet.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/cardTableModRefBS.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/space.hpp:29,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/spaceDecorator.hpp:29,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/parallel/asPSYoungGen.hpp:34,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/parallel/adjoiningGenerations.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/parallel/adjoiningGenerations.cpp:26:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_adjoiningGenerations.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_advancedThresholdPolicy.o:\n"
* For target hotspot_variant-zero_libjvm_objs_advancedThresholdPolicy.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_advancedThresholdPolicy.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/genCollectedHeap.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/gcLocker.hpp:29,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/runtime/interfaceSupport.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/prims/methodHandles.hpp:32,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciMethod.hpp:33,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/code/debugInfoRec.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciEnv.hpp:31,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciUtilities.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciNullObject.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/ci/ciConstant.hpp:29,
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_advancedThresholdPolicy.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
   ... (rest of output omitted)
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_ageTable.o:\n"
* For target hotspot_variant-zero_libjvm_objs_ageTable.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_ageTable.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/genCollectedHeap.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/oops/oop.inline.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/ageTable.inline.hpp:29,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/ageTable.cpp:27:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_ageTable.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_allocation.o:\n"
* For target hotspot_variant-zero_libjvm_objs_allocation.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_allocation.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/genCollectedHeap.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/memory/allocation.cpp:26:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_allocation.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_arena.o:\n"
* For target hotspot_variant-zero_libjvm_objs_arena.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_arena.o.log || true) | /usr/bin/head -n 12
In file included from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/barrierSet.hpp:31:0,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/collectorPolicy.hpp:28,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/gc/shared/genCollectedHeap.hpp:30,
                 from /home/glaubitz/openjdk/hs/src/hotspot/share/memory/arena.cpp:26:
/home/glaubitz/openjdk/hs/src/hotspot/share/oops/accessBackend.hpp:85:85: error: expected ‘{’ before ‘>’ token
   struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
                                                                                     ^
if test `/usr/bin/wc -l < /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_arena.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "\n* All command lines available in /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs.\n"

* All command lines available in /home/glaubitz/openjdk/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs.
/usr/bin/printf "=== End of repeated output ===\n"
=== End of repeated output ===

This is fixed with:

diff -r 1f77dcf5577e src/hotspot/os_cpu/linux_zero/os_linux_zero.cpp
--- a/src/hotspot/os_cpu/linux_zero/os_linux_zero.cpp Tue Nov 21 13:48:28 2017 +0100
+++ b/src/hotspot/os_cpu/linux_zero/os_linux_zero.cpp Tue Nov 21 15:10:33 2017 +0100
@@ -372,7 +372,7 @@
   // The initial thread has a growable stack, and the size reported
   // by pthread_attr_getstack is the maximum size it could possibly
   // be given what currently mapped. This can be huge, so we cap it.
- if (os::Linux::is_initial_thread()) {
+ if (os::is_primordial_thread()) {
     stack_bytes = stack_top - stack_bottom;
 
     if (stack_bytes > JavaThread::stack_size_at_create())

However, the build then later fails with:

=== Output from failing command(s) repeated here ===
/usr/bin/printf "* For target hotspot_variant-zero_libjvm_objs_os_linux_zero.o:\n"
* For target hotspot_variant-zero_libjvm_objs_os_linux_zero.o:
(/bin/grep -v -e "^Note: including file:" < /home/glaubitz/upstream/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_os_linux_zero.o.log || true) | /usr/bin/head -n 12
/home/glaubitz/upstream/hs/src/hotspot/os_cpu/linux_zero/os_linux_zero.cpp: In function ‘void current_stack_region(u_char**, size_t*)’:
/home/glaubitz/upstream/hs/src/hotspot/os_cpu/linux_zero/os_linux_zero.cpp:375:18: error: ‘is_initial_thread’ is not a member of ‘os::Linux’
   if (os::Linux::is_initial_thread()) {
                  ^~~~~~~~~~~~~~~~~
if test `/usr/bin/wc -l < /home/glaubitz/upstream/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs/hotspot_variant-zero_libjvm_objs_os_linux_zero.o.log` -gt 12; then /bin/echo " ... (rest of output omitted)" ; fi
/usr/bin/printf "\n* All command lines available in /home/glaubitz/upstream/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs.\n"

* All command lines available in /home/glaubitz/upstream/hs/build/linux-x86_64-normal-zero-release/make-support/failure-logs.
/usr/bin/printf "=== End of repeated output ===\n"
=== End of repeated output ===

This in turn is fixed by:

diff -r 1f77dcf5577e src/hotspot/share/oops/accessBackend.hpp
--- a/src/hotspot/share/oops/accessBackend.hpp Tue Nov 21 13:48:28 2017 +0100
+++ b/src/hotspot/share/oops/accessBackend.hpp Tue Nov 21 15:10:33 2017 +0100
@@ -82,7 +82,7 @@
 #ifdef SUPPORTS_NATIVE_CX8
   struct PossiblyLockedAccess: public IntegralConstant<bool, false> {};
 #else
- struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)>::value> {};
+ struct PossiblyLockedAccess: public IntegralConstant<bool, (sizeof(T) > 4)> {};
 #endif
 
   template <DecoratorSet decorators, typename T>