[clang] [clang][Sema] decay functions to pointers for qualifier discarding and overflow behavior (PR #183616)

[Shafik Yaghmour via cfe-commits]

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@@ -17649,6 +17651,9 @@ bool Sema::DiagnoseAssignmentResult(AssignConvertType ConvTy,
   case AssignConvertType::CompatibleOBTDiscards:
     return false;
   case AssignConvertType::IncompatibleOBTKinds: {
+    if (SrcType->isArrayType() || SrcType->isFunctionType()) {
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shafik wrote:

IF you have a way of triggering the diagnostic that is great, if you don't then you don't. We want to avoid uncovered code as much as possible, it just gives rise to regressions over the long-term.

https://github.com/llvm/llvm-project/pull/183616