[Lldb-commits] [lldb] [lldb] Add GetPointerDiffType to TypeSystemClang (PR #185314)

[Michael Buch via lldb-commits]

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@@ -2401,6 +2401,15 @@ CompilerType TypeSystemClang::GetPointerSizedIntType(bool is_signed) {
       getASTContext().getTypeSize(getASTContext().VoidPtrTy), is_signed);
 }
 
+CompilerType TypeSystemClang::GetPointerDiffType(bool is_signed) {
+  if (!getASTContext().VoidPtrTy)
+    return {};
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Michael137 wrote:

Little bit opaque for future readers. We should probably have a helper called `AreBuiltinTypesInitialized` or something which does this check. And call it from all the places where we rely on it

But not in scope for this PR. Maybe leave a comment explaining why this is necessary?

https://github.com/llvm/llvm-project/pull/185314