[lld] [llvm] [lld][AArch64][Build Attributes] Add support for converting AArch64 Build Attributes to GNU Properties (PR #131990)

[via llvm-commits]

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@@ -239,9 +240,11 @@ class ELFFileBase : public InputFile {
 public:
   // Name of source file obtained from STT_FILE, if present.
   StringRef sourceFile;
+  std::unique_ptr<std::string> sourceFileStorage;
   uint32_t andFeatures = 0;
   bool hasCommonSyms = false;
   ArrayRef<uint8_t> aarch64PauthAbiCoreInfo;
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sivan-shani wrote:

Yes, in other places `aarch64PauthAbiCoreInfo`  is simply being pointed at consistent memory that is alive longer then the intended usage of this variable.
However, since we have to point `aarch64PauthAbiCoreInfo` to memory that will no longer be alive beyond scope, `aarch64PauthAbiCoreInfoStorage` had to be introduced.

https://github.com/llvm/llvm-project/pull/131990