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[sanitizer-coverage] add a deprecation note to coverage_direct=1 

llvm-svn: 301824
This commit is contained in:
Kostya Serebryany 2017-05-01 19:52:01 +00:00
parent e12d1e70cb
commit 4a27c79a95
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clang/docs/SanitizerCoverage.rst
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@ -367,6 +367,8 @@ This can be changed with ``ASAN_OPTIONS=coverage_dir=/path``:
Sudden death
============
*Deprecated, don't use*
Normally, coverage data is collected in memory and saved to disk when the
program exits (with an ``atexit()`` handler), when a SIGSEGV is caught, or when
``__sanitizer_cov_dump()`` is called.