[clang] [LifeitimeSafety] Support C Language in LifetimeSafety (PR #203270)

[Gábor Horváth via cfe-commits]

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@@ -347,6 +353,12 @@ void FactsGenerator::VisitUnaryOperator(const UnaryOperator *UO) {
   switch (UO->getOpcode()) {
   case UO_AddrOf: {
     const Expr *SubExpr = UO->getSubExpr();
+    // In C, function addresses do not need lifetime tracking. Also skip
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Xazax-hun wrote:

This is the same in C++, functions have static lifetime, we do not need to track the lifetimes of function pointers. I wonder if that part should be the same in C and C++ mode. 

Did this trigger an a crash or a false positive? 

https://github.com/llvm/llvm-project/pull/203270