[PATCH 5a/6] diagnostics: Handle generated data locations in edit_context

Class edit_context handles outputting fixit hints in diff form that could be
manually or automatically applied by the user. This will not make sense for
generated data locations, such as the contents of a _Pragma string, because
the text to be modified does not appear in the user's input files. We do not
currently ever generate fixit hints in such a context, but for future-proofing
purposes, ignore such locations in edit context now.

gcc/ChangeLog:

	* edit-context.cc (edit_context::apply_fixit): Ignore locations in
	generated data.

diff --git a/gcc/edit-context.cc b/gcc/edit-context.cc
index 6879ddd41b4..aa95bc0834f 100644
--- a/gcc/edit-context.cc
+++ b/gcc/edit-context.cc
@@ -301,8 +301,12 @@ edit_context::apply_fixit (const fixit_hint *hint)
     return false;
   if (start.column == 0)
     return false;
+  if (start.generated_data)
+    return false;
   if (next_loc.column == 0)
     return false;
+  if (next_loc.generated_data)
+    return false;
 
   edited_file &file = get_or_insert_file (start.file);
   if (!m_valid)