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locks; strict;
comment	@// @;


1.2
date	2020.05.17.00.47.06;	author tnn;	state dead;
branches;
next	1.1;
commitid	by06jUrXKAUzQw8C;

1.1
date	2015.09.12.16.56.48;	author joerg;	state Exp;
branches;
next	;
commitid	hP61B558qnbf9ZAy;


desc
@@


1.2
log
@retire lang/openjdk7
@
text
@$NetBSD: patch-hotspot_src_share_vm_opto_library__call.cpp,v 1.1 2015/09/12 16:56:48 joerg Exp $

Left shift of negative values is UB.

--- hotspot/src/share/vm/opto/library_call.cpp.orig	2015-06-09 13:47:01.000000000 +0000
+++ hotspot/src/share/vm/opto/library_call.cpp
@@@@ -3454,8 +3454,8 @@@@ Node* LibraryCallKit::generate_array_gua
   }
   // Now test the correct condition.
   jint  nval = (obj_array
-                ? ((jint)Klass::_lh_array_tag_type_value
-                   <<    Klass::_lh_array_tag_shift)
+                ? (jint)((juint)Klass::_lh_array_tag_type_value
+                         <<    Klass::_lh_array_tag_shift)
                 : Klass::_lh_neutral_value);
   Node* cmp = _gvn.transform( new(C) CmpINode(layout_val, intcon(nval)) );
   BoolTest::mask btest = BoolTest::lt;  // correct for testing is_[obj]array
@


1.1
log
@Avoid UB by left shift of negative values.
@
text
@d1 1
a1 1
$NetBSD$
@