[clang] [clang] Do not serialize function definitions without a body (PR #121550)

[Chuanqi Xu via cfe-commits]

Alejandro =?utf-8?q?Álvarez_Ayllón?Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/121550 at github.com>


================
@@ -6092,9 +6092,10 @@ void ASTWriter::WriteDeclUpdatesBlocks(ASTContext &Context,
 
       // An updated body is emitted last, so that the reader doesn't need
       // to skip over the lazy body to reach statements for other records.
-      if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
-        HasUpdatedBody = true;
-      else if (Kind == UPD_CXX_ADDED_VAR_DEFINITION)
+      if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION) {
+        assert(isa<FunctionDecl>(D) && "expected FunctionDecl");
+        HasUpdatedBody = dyn_cast<FunctionDecl>(D)->hasBody();
----------------
ChuanqiXu9 wrote:

```suggestion
        HasUpdatedBody = cast<FunctionDecl>(D)->hasBody();
```

https://github.com/llvm/llvm-project/pull/121550