--- old/make/hotspot/lib/JvmOverrideFiles.gmk	2017-09-19 15:11:45.036108983 +0200
+++ new/make/hotspot/lib/JvmOverrideFiles.gmk	2017-09-19 15:11:44.692107277 +0200
@@ -32,6 +32,8 @@
 ifeq ($(TOOLCHAIN_TYPE), gcc)
   BUILD_LIBJVM_vmStructs.cpp_CXXFLAGS := -fno-var-tracking-assignments -O0
   BUILD_LIBJVM_jvmciCompilerToVM.cpp_CXXFLAGS := -fno-var-tracking-assignments
+  BUILD_LIBJVM_assembler_x86.cpp_CXXFLAGS := -Wno-maybe-uninitialized
+  BUILD_LIBJVM_interp_masm_x86.cpp_CXXFLAGS := -Wno-uninitialized
 endif
 
 ifeq ($(OPENJDK_TARGET_OS), linux)