[util.smartptr.{enab, shared.const}] Restyle expos-only member "weak-this" (#7590)

Author: lprv

source/memory.tex

@@ -3331,10 +3331,10 @@
 then \tcode{remove_cv_t<Y>*} shall be implicitly convertible to \tcode{T*} and
 the constructor evaluates the statement:
 \begin{codeblock}
-if (p != nullptr && p->weak_this.expired())
-  p->weak_this = shared_ptr<remove_cv_t<Y>>(*this, const_cast<remove_cv_t<Y>*>(p));
+if (p != nullptr && p->@\exposid{weak-this}@.expired())
+  p->@\exposid{weak-this}@ = shared_ptr<remove_cv_t<Y>>(*this, const_cast<remove_cv_t<Y>*>(p));
 \end{codeblock}
-The assignment to the \tcode{weak_this} member is not atomic and
+The assignment to the \exposid{weak-this} member is not atomic and
 conflicts with any potentially concurrent access to the same object\iref{intro.multithread}.
 
 \indexlibraryctor{shared_ptr}%
@@ -5028,7 +5028,7 @@
     weak_ptr<T const> weak_from_this() const noexcept;
 
   private:
-    mutable weak_ptr<T> weak_this;  // \expos
+    mutable weak_ptr<T> @\exposid{weak-this}@;  // \expos
   };
 }
 \end{codeblock}
@@ -5046,7 +5046,7 @@
 \begin{itemdescr}
 \pnum
 \effects
-Value-initializes \tcode{weak_this}.
+Value-initializes \exposid{weak-this}.
 \end{itemdescr}
 
 \indexlibrarymember{operator=}{enable_shared_from_this}%
@@ -5061,7 +5061,7 @@
 
 \pnum
 \begin{note}
-\tcode{weak_this} is not changed.
+\exposid{weak-this} is not changed.
 \end{note}
 \end{itemdescr}
 
@@ -5075,7 +5075,7 @@
 \begin{itemdescr}
 \pnum
 \returns
-\tcode{shared_ptr<T>(weak_this)}.
+\tcode{shared_ptr<T>(\exposid{weak-this})}.
 \end{itemdescr}
 
 \indexlibraryglobal{weak_ptr}%
@@ -5088,7 +5088,7 @@
 \begin{itemdescr}
 \pnum
 \returns
-\tcode{weak_this}.
+\exposid{weak-this}.
 \end{itemdescr}
 
 \rSec2[util.smartptr.hash]{Smart pointer hash support}