Setting foreign.restricted to permit doesn't work

[Ty Young]

On 4/23/20 4:14 PM, Maurizio Cimadamore wrote:
> This is as expected. The property was always intended to be an opt-in 
> - e.g. a replacement for a command line flag. Because of an issue in 
> the implementation, it was possible to bypass the flag and set the 
> property in a static initializer. Now the implementation correctly 
> reads the value of the property at VM startup.
>
> In short - you need the command line flag.


The MemorySegment.ofNativeRestricted does not mention this currently. 
Could extra clarification be added?


What is the runtime argument? --foreign-restricted=permit?


>
> Maurizio
>
> On 23/04/2020 22:05, Ty Young wrote:
>> Setting "foreign.restricted" to "permit":
>>
>>
>> System.setProperty("foreign.restricted", "permit");
>>
>>
>> fails on the latest source builds. This is before any unsafe 
>> operations in my JavaFX application or even my "Test" runnable class 
>> for bindings. Call trace:
>>
>>
>> Caused by: java.lang.IllegalAccessError: Illegal access to restricted 
>> foreign method: MemorySegment.ofNativeRestricted ; system property 
>> 'foreign.restricted' is set to 'deny'
>>     at 
>> jdk.incubator.foreign/jdk.internal.foreign.Utils.throwIllegalAccessError(Utils.java:99)
>>     at 
>> jdk.incubator.foreign/jdk.internal.foreign.Utils.checkRestrictedAccess(Utils.java:84)
>>     at 
>> jdk.incubator.foreign/jdk.incubator.foreign.MemorySegment.ofNativeRestricted(MemorySegment.java:540)
>>     at 
>> org.goliath.crosspoint/org.goliath.crosspoint.abstracts.ThreadSafeNativeNumber.<init>(ThreadSafeNativeNumber.java:20)
>>     at 
>> org.goliath.crosspoint/org.goliath.crosspoint.abstracts.NativeNumber.<init>(NativeNumber.java:66)
>>     at 
>> org.goliath.crosspoint/org.goliath.crosspoint.numbers.NativeLong.<init>(NativeLong.java:11)
>>
>>
>>