tests: Catch exceptions by const ref

To avoid "error: catching polymorphic type ‘class std::range_error’ by value"

1 files changed, 1 insertions, 2 deletions

diff --git a/tests/test_exception_catch.cc b/tests/test_exception_catch.cc
index f8f6e02..7fd41fa 100644
--- a/tests/test_exception_catch.cc
+++ b/tests/test_exception_catch.cc
@@ -1,4 +1,3 @@
-// -*- c++ -*-
 /* Copyright 2002, The libsigc++ Development Team
  *  Assigned to public domain.  Use as you wish without restriction.
  */
@@ -54,7 +53,7 @@ struct my_catch
     {
       throw;
     }
-    catch (std::range_error e) // catch what types we know
+    catch (const std::range_error& e) // catch what types we know
     {
       result_stream << "caught " << e.what();
     }