Fix catch of polymorphic type by value

diff --git a/libs/pbd/demangle.cc b/libs/pbd/demangle.cc
index aba08ed1a4bbce05c565cf0e5b715423d3445c0f..1df9f36e2710d295d2631d33f1777ac2f2fcb106 100644 (file)
--- a/libs/pbd/demangle.cc
+++ b/libs/pbd/demangle.cc
@@ -35,7 +35,7 @@ PBD::demangle_symbol (const std::string& mangled_symbol)
                std::string demangled_symbol (realname);
                free (realname);
                return demangled_symbol;
-       } catch (std::exception) {
+       } catch (const std::exception&) {
 
        }
 #endif