[libcxx-commits] [compiler-rt] [libcxx] [libcxxabi] [libunwind] [runtimes][PAC] Harden unwinding when possible (PR #143230)

[Daniil Kovalev via libcxx-commits]

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@@ -79,16 +79,18 @@ struct _LIBCXXABI_HIDDEN __cxa_exception {
 // http://sourcery.mentor.com/archives/cxx-abi-dev/msg01924.html
 // The layout of this structure MUST match the layout of __cxa_exception, with
 // primaryException instead of referenceCount.
+// The tags used in the pointer authentication qualifiers also need to match
+// those of the corresponding members in __cxa_exception.
 struct _LIBCXXABI_HIDDEN __cxa_dependent_exception {
 #if defined(__LP64__) || defined(_WIN64) || defined(_LIBCXXABI_ARM_EHABI)
     void* reserve; // padding.
     void* primaryException;
 #endif
 
     std::type_info *exceptionType;
-    void (_LIBCXXABI_DTOR_FUNC *exceptionDestructor)(void *);
-    std::unexpected_handler unexpectedHandler;
-    std::terminate_handler terminateHandler;
+    void(_LIBCXXABI_DTOR_FUNC *__ptrauth_cxxabi_exception_destructor exceptionDestructor)(void*);
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kovdan01 wrote:

Nit: revert unintended formatting change
```suggestion
    void (_LIBCXXABI_DTOR_FUNC *__ptrauth_cxxabi_exception_destructor exceptionDestructor)(void *);
```

https://github.com/llvm/llvm-project/pull/143230