8075511: Enable -Woverloaded-virtual C++ warning for HotSpot build
Reviewed-by: erikj, simonis, ehelin
--- a/hotspot/make/linux/makefiles/gcc.make Tue Mar 24 10:24:31 2015 +0100
+++ b/hotspot/make/linux/makefiles/gcc.make Tue Mar 24 13:49:56 2015 +0100
@@ -207,7 +207,7 @@
WARNINGS_ARE_ERRORS += -Wno-return-type -Wno-empty-body
endif
-WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wunused-value -Wformat=2 -Wreturn-type
+WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wunused-value -Wformat=2 -Wreturn-type -Woverloaded-virtual
ifeq ($(USE_CLANG),)
# Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit