Kang Seonghoon ff678ea3f4 std: Fixed backtrace warnings and tests for non-Linux platforms.
- Fixed a couple of dead code warnings in std::sys::backtrace.
- Made `backtrace-debuginfo` test a no-op on non-Linux platforms.
- `backtrace-debuginfo` is no longer tested on pretty-rpass.
2015-02-28 01:42:51 +09:00
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