On 04 Sep 2014, at 10:12, Yuriy Tymchuk <yuriy.tymchuk@me.com> wrote:

I�ve investigated an error.

It occurs as follows:
1. Two class variables (assoc subclass) are checked for equality. This also checks the equality of assoc. values.
2. When two registers are checked for equality their code is checked. #code method in AJx64RipRegister throws an error.

one thing that bothers me is that global variables comparison relies on their content�s functionality.

On the other hand there is no way to compare AJx64RipRegister registers, as #= inherited from AJBaseReg will %100 crash.

I think the solution is to use #identityIncludes: in 

whichSelectorsReferTo: literal special: specialFlag byte: specialByte
    "Answer a set of selectors whose methods access the argument as a literal."

    | who |
    who := IdentitySet new.
    self selectorsAndMethodsDo: 
        [:sel :method |
        ((method hasLiteral: literal) or: [specialFlag and: [method scanFor: specialByte]])
            ifTrue:
                [((literal isVariableBinding) not
                    or: [method literals allButLast identityIncludes: literal])
                        ifTrue: [who add: sel]]].
    ^ who

Uko

On 04 Sep 2014, at 09:55, Yuriy Tymchuk <yuriy.tymchuk@me.com> wrote:

Sure https://pharo.fogbugz.com/f/cases/13952/Pool-access-lookup-crash

On 04 Sep 2014, at 09:44, Marcus Denker <marcus.denker@inria.fr> wrote:

Hi,

No, not yet reported. Can you open an issue?

On Wed, Sep 3, 2014 at 8:43 PM, Yuriy Tymchuk <yuriy.tymchuk@me.com> wrote:

Hi everyone,

when you go to AJx86Registers class, press �Show class variables� and select �IP�, then it crashes with: 'RIP register IP cannot be used only for relative addressing�. I couldn�t find related bug report, should I open one?

<Screen Shot 2014-09-03 at 20.40.17.png>

Uko

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Marcus Denker  --  denker@acm.org
http://www.marcusdenker.de