[Bug c++/79595] New: Inconsistent grammar in diagnostic "partial specialization %q+D does not specialize"

["roland.illig at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79595

            Bug ID: 79595
           Summary: Inconsistent grammar in diagnostic "partial
                    specialization %q+D does not specialize"
           Product: gcc
           Version: 7.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: roland.illig at gmx dot de
  Target Milestone: ---

Code from cp/pt.c:

      if (!flag_concepts)
        error ("partial specialization %q+D does not specialize "
               "any template arguments", decl);
      else
        error ("partial specialization %q+D does not specialize any "
               "template arguments and is not more constrained than", decl);
      inform (DECL_SOURCE_LOCATION (maintmpl), "primary template here");

The first sentence is:

location1: partial specialization %q+D does not specialize any template
arguments
location2: primary template here

The second sentence is:

location1: partial specialization %q+D does not specialize any template
arguments and is not more constrained than
location2: primary template here

In German, it is not possible to translate both sentences to actually
understandable grammar at the same time. Even in English, the second of these
is a complete sentence (split into two parts, which is often problematic for
translators), while the first is a concatenation of two sentence fragments.

Therefore the call to inform should use different text for the two cases.