================
@@ -194,12 +198,43 @@ Some issues with flags can be debugged using the
``verbosity=$NUM`` flag:
misspelled_flag
...
-Disabling
----------
+Disabling and suppressing
+-------------------------
-In some circumstances, you may want to suppress error reporting in a specific
scope.
+There are multiple ways to suppress error reporting when using
RealtimeSanitizer.
-In C++, this is achieved via ``__rtsan::ScopedDisabler``. Within the scope
where the ``ScopedDisabler`` object is instantiated, all sanitizer error
reports are suppressed. This suppression applies to the current scope as well
as all invoked functions, including any functions called transitively.
+In general, ``ScopedDisabler`` should be preferred, as it is the most
performant.
+
+.. list-table:: Suppression methods
+ :widths: 30 15 15 10 70
+ :header-rows: 1
+
+ * - Suppression method
+ - Specified at?
+ - Scope
+ - Run-time cost
+ - Description
+ * - ``ScopedDisabler``
+ - Compile-time
+ - Stack
+ - Very low
----------------
davidtrevelyan wrote:
I appreciate that we might want something really concise and snappy here, but
if that's not a massive motivation, I think we could quantify these costs a
bit, rather than just saying low, medium and high. Maybe something like "Very
low: single bool check" could work?
https://github.com/llvm/llvm-project/pull/112727
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