[dcl.fct.def.general] Index __func__ (#4124)

Author: stbergmann

source/declarations.tex

@@ -5974,6 +5974,7 @@
 storage duration that is implicitly defined (see~\ref{basic.scope.block}).
 
 \pnum
+\indextext{__func__@\mname{func}}%
 The function-local predefined variable \mname{func} is
 defined as if a definition of the form
 \begin{codeblock}