Use const-ref in foreach if T is big or non-trivial

Criteria: Linux x86_64, sizeof(T) > 8

Change-Id: I78c2b776ff219fa1ff6632fde17ae25fae66c54e
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/tools/qlalr/cppgenerator.cpp b/src/tools/qlalr/cppgenerator.cpp
index 80f7a4ed2b..3005690e6e 100644
--- a/src/tools/qlalr/cppgenerator.cpp
+++ b/src/tools/qlalr/cppgenerator.cpp
@@ -163,7 +163,7 @@ void CppGenerator::operator () ()
           if (item->rule == grammar.goal)
             accept_state = q;
 
-          foreach (Name s, lookaheads)
+          foreach (const Name &s, lookaheads)
             {
               int &u = ACTION (q, aut.id (s));
 
@@ -616,7 +616,7 @@ void CppGenerator::generateImpl (QTextStream &out)
 
           out << name_ids.value(rule->lhs);
 
-          foreach (Name n, rule->rhs)
+          foreach (const Name &n, rule->rhs)
             out << ", " << name_ids.value (n);
         }
       out << "};" << endl << endl;