[libcxx-commits] [libcxx] [libc++][NFC] Simplify the implementation of reserve() and shrink_to_fit() (PR #113453)

[Louis Dionne via libcxx-commits]

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@@ -2060,6 +2058,21 @@ private:
 #endif
   }
 
+  // Disable ASan annotations and enable them again when going out of scope. It is assumed that the string is in a valid
+  // state at that point, so `size()` can be called safely.
+  struct [[__nodiscard__]] __annotation_guard {
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ldionne wrote:

Let's introduce an actual `__scope_guard` and then use it here. It's going to be more general and it will make this code easier to understand.

https://github.com/llvm/llvm-project/pull/113453