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8307508: IndirectVarHandle.isAccessModeSupported throws NPE

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Reviewed-by: mchung
This commit is contained in:
Chen Liang 2023-06-13 17:05:52 +00:00 • committed by Mandy Chung
parent bed9161c81
commit 75dcc4ef94
3 changed files with 78 additions and 36 deletions
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8
src/java.base/share/classes/java/lang/invoke/VarHandle.java
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@ -526,8 +526,6 @@ public abstract sealed class VarHandle implements Constable
return this;
}
VarHandle target() { return null; }
/**
* Returns {@code true} if this VarHandle has <a href="#invoke-exact-behavior"><em>invoke-exact behavior</em></a>.
*
@ -2120,7 +2118,7 @@ public abstract sealed class VarHandle implements Constable
* @return {@code true} if the given access mode is supported, otherwise
* {@code false}.
*/
public final boolean isAccessModeSupported(AccessMode accessMode) {
public boolean isAccessModeSupported(AccessMode accessMode) {
return vform.getMemberNameOrNull(accessMode.ordinal()) != null;
}
@ -2176,7 +2174,7 @@ public abstract sealed class VarHandle implements Constable
MethodHandle[] methodHandleTable;
@ForceInline
MethodHandle getMethodHandle(int mode) {
final MethodHandle getMethodHandle(int mode) {
MethodHandle[] mhTable = methodHandleTable;
if (mhTable == null) {
mhTable = methodHandleTable = new MethodHandle[AccessMode.COUNT];
@ -2188,7 +2186,7 @@ public abstract sealed class VarHandle implements Constable
return mh;
}
private final MethodHandle getMethodHandleUncached(int mode) {
MethodHandle getMethodHandleUncached(int mode) {
MethodType mt = accessModeType(AccessMode.values()[mode]).
insertParameterTypes(0, VarHandle.class);
MemberName mn = vform.getMemberName(mode);