[clang] [C++26] [Contracts] Support Parser, AST and AST Serialization (1/n) (PR #205739)

[Yihan Wang via cfe-commits]

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@@ -1143,6 +1143,43 @@ void ASTDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
     Params.push_back(readDeclAs<ParmVarDecl>());
   FD->setParams(Reader.getContext(), Params);
 
+  // C++26 Contracts (P2900R14)
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yronglin wrote:

IIUC, We don't need a proposal number in code? We can use the standard section ID instead.

https://github.com/llvm/llvm-project/pull/205739