enable -Wmissing-braces if supported

follow-up to #10743

diff --git a/cmake/setup_compiler_flags_gnu.cmake b/cmake/setup_compiler_flags_gnu.cmake
index f53eaeb9ff0cc586fceca1cca19ddc5221d9cc39..3852b813b98196670c5d0a2af3606e362a40e24d 100644 (file)
--- a/cmake/setup_compiler_flags_gnu.cmake
+++ b/cmake/setup_compiler_flags_gnu.cmake
@@ -83,6 +83,7 @@ ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wsuggest-override")
 ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wswitch")
 ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wsynth")
 ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wwrite-strings")
+ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wmissing-braces")
 
 #
 # Disable Wplacement-new that will trigger a lot of warnings