LWG3948 possibly-const-range and as-const-pointer should be noexcept

Author: burblebee

source/ranges.tex

@@ -393,7 +393,7 @@
 
   // \ref{range.as.const}, as const view
   template<@\libconcept{input_range}@ R>
-    constexpr auto& @\exposid{possibly-const-range}@(R& r) {          // \expos
+    constexpr auto& @\exposid{possibly-const-range}@(R& r) noexcept { // \expos
       if constexpr (@\libconcept{constant_range}@<const R> && !@\libconcept{constant_range}@<R>) {
         return const_cast<const R&>(r);
       } else {
@@ -1184,7 +1184,7 @@
 
 \begin{codeblock}
 template<class T>
-constexpr auto @\exposid{as-const-pointer}@(const T* p) { return p; }   // \expos
+constexpr auto @\exposid{as-const-pointer}@(const T* p) noexcept { return p; }  // \expos
 \end{codeblock}
 
 \pnum