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Diffstat (limited to 'Swift/QtUI')
-rw-r--r--Swift/QtUI/main.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/Swift/QtUI/main.cpp b/Swift/QtUI/main.cpp
index de9d122..d44bd01 100644
--- a/Swift/QtUI/main.cpp
+++ b/Swift/QtUI/main.cpp
@@ -43,7 +43,7 @@ int main(int argc, char* argv[]) {
boost::program_options::variables_map vm;
try {
boost::program_options::store(boost::program_options::parse_command_line(argc, argv, desc), vm);
- } catch (boost::program_options::unknown_option option) {
+ } catch (const boost::program_options::unknown_option& option) {
#if BOOST_VERSION >= 104200
std::cout << "Ignoring unknown option " << option.get_option_name() << " but continuing." << std::endl;
#else