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8160399: is_oop_or_null involves undefined behavior

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8164984: Improper use of is_oop in production code

Replace oop->is_oop*() with oopDesc::is_oop*(oop) so this pointer can be verified

Reviewed-by: iklam, kvn, dholmes
This commit is contained in:
Coleen Phillimore 2017-08-23 14:52:55 -04:00
parent 61a9f88ca7
commit 3d6d1ec64b
61 changed files with 195 additions and 209 deletions
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hotspot/src/share/vm/classfile/classLoaderData.inline.hpp
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@ -41,7 +41,7 @@ inline ClassLoaderData* ClassLoaderData::class_loader_data(oop loader) {
inline ClassLoaderData *ClassLoaderDataGraph::find_or_create(Handle loader, TRAPS) {
guarantee(loader() != NULL && loader()->is_oop(), "Loader must be oop");
guarantee(loader() != NULL && oopDesc::is_oop(loader()), "Loader must be oop");
// Gets the class loader data out of the java/lang/ClassLoader object, if non-null
// it's already in the loader_data, so no need to add
ClassLoaderData* loader_data= java_lang_ClassLoader::loader_data(loader());