[compiler-rt] [libcxxabi] [libunwind] [runtimes][PAC] Harden unwinding when possible (#138571) (PR #143230)

[Daniil Kovalev via llvm-commits]

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@@ -103,10 +104,68 @@
 #define _LIBCXXABI_DTOR_FUNC
 #endif
 
-#if __cplusplus < 201103L
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kovdan01 wrote:

I suppose this was removed accidentally during merging. W/o this, the build is just broken.

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