[Bug 1400299] Re: rocksdb ftbfs on ppc64el with -03

[Sage Weil]

On Mon, 8 Dec 2014, Ken Dreyer wrote:
> We should get this reported to Ceph upstream.
> 
> Ceph is bundling an old copy of rocksdb (ugh), and I wonder if this is
> fixed in a later version of rocksdb.
> 
> By the way, my hunch is that the reason that Ceph bundles rocksdb is
> because it was not packaged in the distros at the time that Ceph wanted
> to use it.

Exactly.

> Is it now packaged in Ubuntu?

Nope!

Let's pull rocksdb up to a newer version and see if that helps?

sage


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> https://bugs.launchpad.net/bugs/1400299
> 
> Title:
>   rocksdb ftbfs on ppc64el with -03
> 
> Status in ceph package in Ubuntu:
>   New
> Status in gcc-4.9 package in Ubuntu:
>   New
> 
> Bug description:
>   The rocksdb library in the ceph source tree fails to build with the
>   default -03 optimizer flag on ppc64el.
> 
>   (vivid-ppc64el)jamespage at kelsey01:~/build-area/ceph-0.87/src/rocksdb$ g++ -DHAVE_CONFIG_H -I. -D_FORTIFY_SOURCE=2 -Wall -Werror -std=c++11 -fPIC -I. -I./include -DOS_LINUX -DROCKSDB_PLATFORM_POSIX -fno-builtin-memcmp -DNDEBUG -DHAVE_JEMALLOC -Woverloaded-virtual -DROCKSDB_ATOMIC_PRESENT -DROCKSDB_FALLOCATE_PRESENT -DROCKSDB_ATOMIC_PRESENT -DROCKSDB_FALLOCATE_PRESENT -DSNAPPY -DZLIB -DBZIP2 -g -O3 -fstack-protector-strong -Wformat -Werror=format-security -std=c++11 -c table/plain_table_reader.cc -fPIE -o table/librocksdb_la-plain_table_reader.o
>   In file included from ./table/plain_table_reader.h:14:0,
>                    from table/plain_table_reader.cc:6:
>   ./db/dbformat.h: In member function 'virtual void rocksdb::PlainTableIterator::Next()':
>   ./db/dbformat.h:266:67: error: 'parsed_key.rocksdb::ParsedInternalKey::sequence' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>        EncodeFixed64(key_ + usize, PackSequenceAndType(s, value_type));
>                                                                      ^
>   table/plain_table_reader.cc:737:23: note: 'parsed_key.rocksdb::ParsedInternalKey::sequence' was declared here
>        ParsedInternalKey parsed_key;
>                          ^
>   In file included from ./table/plain_table_reader.h:14:0,
>                    from table/plain_table_reader.cc:6:
>   ./db/dbformat.h:266:67: error: '*((void*)& parsed_key +24)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>        EncodeFixed64(key_ + usize, PackSequenceAndType(s, value_type));
>                                                                      ^
>   table/plain_table_reader.cc:737:23: note: '*((void*)& parsed_key +24)' was declared here
>        ParsedInternalKey parsed_key;
>                          ^
>   cc1plus: all warnings being treated as errors
> 
>   Works OK with -02
> 
>   (vivid-ppc64el)jamespage at kelsey01:~/build-area/ceph-0.87/src/rocksdb$
>   g++ -DHAVE_CONFIG_H -I. -D_FORTIFY_SOURCE=2 -Wall -Werror -std=c++11
>   -fPIC -I. -I./include -DOS_LINUX -DROCKSDB_PLATFORM_POSIX -fno-
>   builtin-memcmp -DNDEBUG -DHAVE_JEMALLOC -Woverloaded-virtual
>   -DROCKSDB_ATOMIC_PRESENT -DROCKSDB_FALLOCATE_PRESENT
>   -DROCKSDB_ATOMIC_PRESENT -DROCKSDB_FALLOCATE_PRESENT -DSNAPPY -DZLIB
>   -DBZIP2 -g -O2 -fstack-protector-strong -Wformat -Werror=format-
>   security -std=c++11 -c table/plain_table_reader.cc -fPIE -o table
>   /librocksdb_la-plain_table_reader.o
> 
>   Full log:
> 
>   https://launchpadlibrarian.net/191913939/buildlog_ubuntu-vivid-
>   ppc64el.ceph_0.87-0ubuntu1_FAILEDTOBUILD.txt.gz
> 
> To manage notifications about this bug go to:
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> 
>

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Title:
  rocksdb ftbfs on ppc64el with -03

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