[libcxx-commits] [libcxx] [libc++] Improves UB handling in ios_base destructor. (PR #76525)

[Louis Dionne via libcxx-commits]

================
@@ -360,7 +360,50 @@ public:
   }
 
 protected:
-  _LIBCPP_HIDE_FROM_ABI ios_base() { // purposefully does no initialization
+  _LIBCPP_HIDE_FROM_ABI ios_base() : __loc_(nullptr) {
+    // purposefully does no initialization
----------------
ldionne wrote:

```suggestion
    // Purposefully does no initialization
```

https://github.com/llvm/llvm-project/pull/76525