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[sanitizer-coverage] a bit more docs 

llvm-svn: 282752
This commit is contained in:
Kostya Serebryany 2016-09-29 19:06:09 +00:00
parent d6ae22a7ab
commit 851cb98269
1 changed files with 13 additions and 1 deletions
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14
clang/docs/SanitizerCoverage.rst
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@ -385,7 +385,7 @@ Example:
// Now you can get the PC and do whatever you want:
// store it somewhere or symbolize it and print right away.
// The values of `*guard` are as you set them in
// __sanitizer_cov_trace_pc_guard_init and so you can make the consecutive
// __sanitizer_cov_trace_pc_guard_init and so you can make them consecutive
// and use them to dereference an array or a bit vector.
void *PC = __builtin_return_address(0);
char PcDescr[1024];
@ -415,6 +415,18 @@ Example:
guard: 0x71bcd4 2 PC 0x4ecd5b in main trace-pc-guard-example.cc:2
guard: 0x71bcd8 3 PC 0x4ecd9e in main trace-pc-guard-example.cc:3:7
.. code-block:: console
ASAN_OPTIONS=strip_path_prefix=`pwd`/ ./a.out with-foo
.. code-block:: console
INIT: 0x71bcd0 0x71bce0
guard: 0x71bcd4 2 PC 0x4ecd5b in main trace-pc-guard-example.cc:3
guard: 0x71bcdc 4 PC 0x4ecdc7 in main trace-pc-guard-example.cc:4:17
guard: 0x71bcd0 1 PC 0x4ecd20 in foo() trace-pc-guard-example.cc:2:14
Tracing data flow
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