trivialfis cf2d86a4f6 Add travis sanitizers tests. (#3557)
* Add travis sanitizers tests.

* Add gcc-7 in Travis.
* Add SANITIZER_PATH for CMake.
* Enable sanitizer tests in Travis.

* Fix memory leaks in tests.

* Fix all memory leaks reported by Address Sanitizer.
* tests/cpp/helpers.h/CreateDMatrix now returns raw pointer.
2018-08-19 16:40:30 +12:00
..
2018-07-10 00:42:15 -07:00