[clang] [compiler-rt] [compiler-rt] Realtime Sanitizer: Introduce Realtime Sanitizer (RTSan) backend (PR #92460)

[Chris Apple via llvm-commits]

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@@ -0,0 +1,516 @@
+//===--- rtsan_test_interceptors.cpp - Realtime Sanitizer -------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
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cjappl wrote:

Seems reasonable to convert these to lit! I propose leaving this for this commit, and we convert them in the near future. Specifically this next commit will introduce the -fsanitize=realtime flag, and come with a bunch of the lit tests that we have written, so it will be easier to convert them once that infrastructure has landed.

One clarifying question, for when that work is done:

Should we have a lit test for every intereceptor? The reason we did it in gtest unit tests is that adding a new interceptor's test is a few lines, as opposed to a  brand new file with the lit boilerplate. This makes it easy to make sure that every interceptor does what we think it does. We worried about the "cost" of the new file for every interceptor.  In our demo branch, as we have it laid out, the lit tests test on the full end-to-end system level, while these tests actually hit every interceptor.

https://github.com/llvm/llvm-project/pull/92460