The zero build fails in repo-valhalla on linux-x64.

Here's a snippet from the log file:

[2025-11-06T22:51:16,012Z] Creating hotspot/variant-zero/libjvm/objs/static/libjvm.a from 761 file(s)
[2025-11-06T22:51:16,041Z] Creating hotspot/variant-zero/libjvm/libgtest/objs/static/libgtest.a from 2 file(s)
[2025-11-06T22:51:16,044Z] Creating hotspot/variant-zero/libjvm/gtest/objs/static/libjvm.a from 184 file(s)
[2025-11-06T22:51:16,047Z] Creating hotspot/variant-zero/libjvm/gtest/launcher-objs/static/libgtestLauncher.a from 1 file(s)
[2025-11-06T22:51:33,619Z] In file included from /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/oops/annotations.hpp:28,
[2025-11-06T22:51:33,619Z] from /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/oops/instanceKlass.hpp:31,
[2025-11-06T22:51:33,619Z] from /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/classfile/javaClasses.hpp:29,
[2025-11-06T22:51:33,619Z] from /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/classfile/javaClasses.inline.hpp:28,
[2025-11-06T22:51:33,619Z] from /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/precompiled/precompiled.hpp:32:
[2025-11-06T22:51:33,619Z] /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/oops/array.hpp: In instantiation of 'class Array<SigEntry>':
[2025-11-06T22:51:33,619Z] /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/ci/ciInlineKlass.cpp:63:29: required from here
[2025-11-06T22:51:33,619Z] 63 | for (int i = 0; i < sig_vk->length(); i++) {
[2025-11-06T22:51:33,619Z] | ^~
[2025-11-06T22:51:33,619Z] /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/oops/array.hpp:47:7: error: 'Array<T>::_data' has incomplete type
[2025-11-06T22:51:33,619Z] 47 | T _data[1]; // the array memory
[2025-11-06T22:51:33,619Z] | ^~~~~
[2025-11-06T22:51:33,619Z] /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/oops/instanceKlass.hpp:141:7: note: forward declaration of 'class SigEntry'
[2025-11-06T22:51:33,619Z] 141 | class SigEntry;
[2025-11-06T22:51:33,619Z] | ^~~~~~~~
[2025-11-06T22:51:33,623Z] /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/ci/ciInlineKlass.cpp: In member function 'int ciInlineKlass::inline_arg_slots()':
[2025-11-06T22:51:33,623Z] /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/ci/ciInlineKlass.cpp:64:30: error: invalid use of incomplete type 'class SigEntry'
[2025-11-06T22:51:33,623Z] 64 | BasicType bt = sig_vk->at(i)._bt;
[2025-11-06T22:51:33,623Z] | ~~~~~~~~~~^~~
[2025-11-06T22:51:33,623Z] /opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/open/src/hotspot/share/oops/instanceKlass.hpp:141:7: note: forward declaration of 'class SigEntry'
[2025-11-06T22:51:33,623Z] 141 | class SigEntry;
[2025-11-06T22:51:33,623Z] | ^~~~~~~~
[2025-11-06T22:51:33,986Z] lib/CompileJvm.gmk:174: recipe for target '/opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/build/linux-x64-zero/hotspot/variant-zero/libjvm/objs/static/ciInlineKlass.o' failed
[2025-11-06T22:51:33,986Z] make[3]: *** [/opt/mach5/mesos/work_dir/slaves/526fbd26-20de-495c-9a19-a04adc16f7d1-S29070/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/38f44a89-3b44-4562-963f-68d03e7162ba/runs/f19ac54c-9f1d-4fe6-a370-e108f498555e/workspace/build/linux-x64-zero/hotspot/variant-zero/libjvm/objs/static/ciInlineKlass.o] Error 1
[2025-11-06T22:51:33,986Z] make[3]: *** Waiting for unfinished jobs....