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

[Chris Apple via llvm-commits]

================
@@ -0,0 +1,106 @@
+//===--- radsan_context.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
+//
+//===----------------------------------------------------------------------===//
+//
+//===----------------------------------------------------------------------===//
+
+#include <radsan/radsan_context.h>
+
+#include <radsan/radsan_stack.h>
+
+#include <sanitizer_common/sanitizer_allocator_internal.h>
+#include <sanitizer_common/sanitizer_stacktrace.h>
+
+#include <new>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+using namespace __sanitizer;
+
+namespace detail {
+
+static pthread_key_t Key;
----------------
cjappl wrote:

No apology necessary! Happy to do this right the first time.

Does this also apply to lambdas?

```
  auto Func = [&vec]() { vec.push_back(0.4f); };
```

Should this become:
```
  auto func = [&vec]() { vec.push_back(0.4f); };
```

Or remain "function case"?

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