8382395: Disable stringop-overflow in shenandoahGenerationalHeap.cpp

Backport-of: 1f782b7

Author: William Kemper

make/hotspot/lib/CompileJvm.gmk

@@ -205,6 +205,7 @@ $(eval $(call SetupJdkLibrary, BUILD_LIBJVM, \
     DISABLED_WARNINGS_gcc_macroAssembler_ppc_sha.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_postaloc.cpp := address, \
     DISABLED_WARNINGS_gcc_safepointMechanism.cpp := stringop-overflow, \
+    DISABLED_WARNINGS_gcc_shenandoahGenerationalHeap.cpp := stringop-overflow, \
     DISABLED_WARNINGS_gcc_shenandoahLock.cpp := stringop-overflow, \
     DISABLED_WARNINGS_gcc_stubGenerator_s390.cpp := unused-const-variable, \
     DISABLED_WARNINGS_gcc_synchronizer.cpp := stringop-overflow, \