[PATCH] Fail to build zero on x86

[John Paul Adrian Glaubitz]

On 01/11/2018 02:15 PM, John Paul Adrian Glaubitz wrote:
> Did you run into this issue as well? We should probably deal with this
> issue first depending on whether it affects the Server variant as well.
> 
> I am testing this now.

And it seems the Server variant will also fail without --disable-warnings-as-errors,
but the builds bails out at a different place:

=== Output from failing command(s) repeated here ===
/usr/bin/printf "* For target hotspot_variant-server_libjvm_objs_assembler_x86.o:\n"
* For target hotspot_variant-server_libjvm_objs_assembler_x86.o:
(/bin/grep -v -e "^Note: including file:" <  /home/glaubitz/upstream/hs/build/linux-x86_64-normal-server-release/make-support/failure-logs/hotspot_variant-server_libjvm_objs_assembler_x86.o.log || true) | /usr/bin/head -n 12
/home/glaubitz/upstream/hs/src/hotspot/cpu/x86/assembler_x86.cpp: In static member function ‘static Address Address::make_raw(int, int, int, int, relocInfo::relocType)’:
/home/glaubitz/upstream/hs/src/hotspot/cpu/x86/assembler_x86.cpp:199:12: error: ‘*((void*)& rspec +32)’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
      return madr;
             ^~~~
/home/glaubitz/upstream/hs/src/hotspot/cpu/x86/assembler_x86.cpp:199:12: error: ‘*((void*)& rspec +24)’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
/home/glaubitz/upstream/hs/src/hotspot/cpu/x86/assembler_x86.cpp:199:12: error: ‘*((void*)& rspec +16)’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
cc1plus: all warnings being treated as errors
if test `/usr/bin/wc -l < /home/glaubitz/upstream/hs/build/linux-x86_64-normal-server-release/make-support/failure-logs/hotspot_variant-server_libjvm_objs_assembler_x86.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-server-release/make-support/failure-logs.\n"

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

So, I guess we should have a discussion in general whether and how to handle
these issues in OpenJDK-11, i.e. whether we should have one big patch to
address all of these warnings or whether we should have individual bug
reports and changesets.

Opinions?

Adrian

-- 
  .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
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