[clang][bytecode] Handle invalid function in CXXInheritedCtorInitExpr (#209138)

clang/lib/AST/ByteCode/Compiler.cpp

@@ -4140,7 +4140,8 @@ bool Compiler<Emitter>::VisitCXXInheritedCtorInitExpr(
   assert(!Ctor->isTrivial() &&
          "Trivial CXXInheritedCtorInitExpr, implement. (possible?)");
   const Function *F = this->getFunction(Ctor);
-  assert(F);
+  if (!F)
+    return false;
   assert(!F->hasRVO());
   assert(F->hasThisPointer());
 

clang/test/AST/ByteCode/invalid.cpp

@@ -227,3 +227,17 @@ namespace DefinitionInBody {
     return 5;
   }
 }
+
+namespace InheritedCtor {
+  struct S {
+    constexpr S(int = ; // both-note {{to match this}} \
+                        // both-error {{expected ';' at end of declaration list}} \
+                        // both-error {{expected expression}}
+  }; // both-error {{expected ')'}}
+
+  struct SS : S {
+    using S::S;
+  };
+
+  SS ss{42};
+}