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, 1 insertions, 1 deletions

diff --git a/src/tools/qlalr/compress.cpp b/src/tools/qlalr/compress.cpp
index 247b284421..fa67504a08 100644
--- a/src/tools/qlalr/compress.cpp
+++ b/src/tools/qlalr/compress.cpp
@@ -183,7 +183,7 @@ void Compress::operator () (int *table, int row_count, int column_count)
 
   index.fill (-999999, row_count);
 
-  foreach (UncompressedRow row, sortedTable)
+  foreach (const UncompressedRow &row, sortedTable)
     {
       int first_token = std::distance (row.begin (), row.beginNonZeros ());
       QVector<int>::iterator pos = info.begin ();