Summary:
Using gcc 5.2.1 to compile RocksDB on Ubuntu 15.10 results in a warning about unused variable. Warning is treated as an error and all of it results in a build break. Fix the issue and make sure that everything compiles with that particular configuration.
P.S. Lint complains about a non-ASCII character used in the source code ("Wagner-Fischer"). Fix this as well.
Test Plan:
# Everything compiler cleanly on the system which exhibited the problem.
# `make clean && make -j 16` on CentOS.
# `make clean && USE_CLANG=1 make -j 16` on CentOS.
Reviewers: sdong, igor
Reviewed By: igor
Subscribers: andrewkr, dhruba
Differential Revision: https://reviews.facebook.net/D55503
Summary:
Adds gtest fused source code into `third-party` directory. No manual changes.
gtest latest released 1.7 has clang dev compilation errors. Trunk version requires only one disabled warning (-Wno-missing-field-initializers)
Fused code is made as described here https://fburl.com/90806322
Details about why we need gtest source code instead of precompiled library https://fburl.com/90805763
Source used from http://googletest.googlecode.com/svn/trunk
Test Plan:
Build and notice no errors. Also check in logs that gtest-all.o being compiled gtest-all.o.
```lang=bash
% USE_CLANG=1 make all
```
Reviewers: lgalanis, yufei.zhu, rven, sdong, igor, meyering
Reviewed By: meyering
Subscribers: meyering, yhchiang, dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D33345
