--- old/src/share/vm/memory/metachunk.hpp 2016-03-10 21:50:11.000000000 +0300 +++ new/src/share/vm/memory/metachunk.hpp 2016-03-10 21:50:11.000000000 +0300 @@ -145,7 +145,10 @@ bool contains(const void* ptr) { return bottom() <= ptr && ptr < _top; } - NOT_PRODUCT(void mangle();) +#ifndef PRODUCT + void mangle(); + void zap(); +#endif // !PRODUCT void print_on(outputStream* st) const; void verify();