[Bug web/63873] New: target links in Concepts Index in gccint do not work

["manu at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63873

            Bug ID: 63873
           Summary: target links in Concepts Index in gccint do not work
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: web
          Assignee: unassigned at gcc dot gnu.org
          Reporter: manu at gcc dot gnu.org
                CC: dmalcolm at gcc dot gnu.org

>From https://gcc.gnu.org/onlinedocs/gccint/Concept-Index.html#Concept-Index
we get
https://gcc.gnu.org/onlinedocs/gccint/Unary-and-Binary-Expressions.html#index-INIT_005fEXPR-1907
which does not exist because this description list does not have any ids.

Texinfo bug? or GCC bug? 

Also, compare

https://gcc.gnu.org/onlinedocs/gccint/Concept-Index.html#Concept-Index

with

https://dmalcolm.fedorapeople.org/gcc/libgccjit-api-docs/genindex.html

Can we move into the 21st century already?