[PATCH v3 2/4] diagnostics: Handle generated data locations in edit_context

[Lewis Hyatt via Gcc-patches]

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.
---
 gcc/edit-context.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/edit-context.cc b/gcc/edit-context.cc
index 6f5bc6b9d8f..ae11b6f2e00 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)