[dcl.attr.nodiscard] add example of nodiscard with message

cplusplus · Aug 19, 2023 · ca12600 · ca12600
1 parent a272b7c
commit ca12600
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/source/declarations.tex b/source/declarations.tex
@@ -9238,7 +9238,7 @@
 \pnum
 \begin{example}
 \begin{codeblock}
-struct [[nodiscard]] my_scopeguard { @\commentellip@ };
+struct [[nodiscard("discarding guards is a bug")]] my_scopeguard { @\commentellip@ };
 struct my_unique {
   my_unique() = default;                                // does not acquire resource
   [[nodiscard]] my_unique(int fd) { @\commentellip@ }         // acquires resource
@@ -9249,7 +9249,7 @@
 error_info enable_missile_safety_mode();
 void launch_missiles();
 void test_missiles() {
-  my_scopeguard();              // warning encouraged
+  my_scopeguard();              // warning encouraged; should include "discarding guards is a bug"
   (void)my_scopeguard(),        // warning not encouraged, cast to \keyword{void}
     launch_missiles();          // comma operator, statement continues
   my_unique(42);                // warning encouraged