Tests: g_memdup() is deprecated since 2.6
builddir$ ninja
../tests/gobject/src/gtypes.c:62:3: warning: ‘g_memdup’ is deprecated: Use 'g_memdup2' instead
builddir$ ninja
../tests/gobject/src/gtypes.c:62:3: warning: ‘g_memdup’ is deprecated: Use 'g_memdup2' instead