bindings: cxx: add a missing throw to line::event_get_fd()

If the call to gpiod_line_event_get_fd() fails, we're not actually
throwing the exception - we're only creating it on stack. Add the
missing throw keyword.

Fixes: 8078a4a2ad90 ("bindings: implement C++ bindings")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

diff --git a/bindings/cxx/line.cpp b/bindings/cxx/line.cpp
index 989976e72a655722157b9c6f81969b20d84b5402..4ccbd150d4a0a9c41f2c67edec5fc20ea7144485 100644 (file)
--- a/bindings/cxx/line.cpp
+++ b/bindings/cxx/line.cpp
@@ -183,8 +183,8 @@ int line::event_get_fd(void) const
        int ret = ::gpiod_line_event_get_fd(this->_m_line);
 
        if (ret < 0)
-               ::std::system_error(errno, ::std::system_category(),
-                                   "unable to get the line event file descriptor");
+               throw ::std::system_error(errno, ::std::system_category(),
+                                         "unable to get the line event file descriptor");
 
        return ret;
 }