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

[Alejandro Álvarez Ayllón via cfe-commits]

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@@ -7230,6 +7230,9 @@ void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
   if (!D->isFromASTFile())
     return; // Declaration not imported from PCH.
 
+  if (!D->doesThisDeclarationHaveABody())
+    return; // The function definition may not have a body due to parsing errors.
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alejandro-alvarez-sonarsource wrote:

Moved

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