[Vm-dev] What a cruel world!

Igor Stasenko siguctua at gmail.com
Tue Dec 28 09:31:52 UTC 2010


i trying to discover which directories and in what order mac VM
looking for extrnal plugin module,
and to make sure that it finds my module, i renamed library
FloatMathPlugin.dylib to

and correspondingly in primitive invocation, i put:

       "Answer E raised to the receiver power.
        Optional. See Object documentation whatIsAPrimitive."

       <primitive: 'primitiveExp' module: 'FloatMathPluginz'>
       self isNaN ifTrue:[  ^self].

now i found that module is loaded, but primitive doesn't work..
entering gdb, i found following cruel line in callInitializersIn():

		if(strncmp(moduleName, module->name, strlen(module->name)) != 0) {
			DPRINTF(("ERROR: getModuleName returned %s (expected: %s)\n",
moduleName, module->name));
			return 0;

where moduleName is a result from call module's 'getModuleName' function,
which is obviously returns 'FloatMathPlugin' instead of 'FloatMathPluginz',
and therefore comparison fails, and module fails to initialize :(

Btw, i would find this thing much faster, if somebody wouldn't put
following in the beginning of sqNamedPrims.c :

#undef DEBUG   <<<< whyyyy?!?!?

#undef DPRINTF
#ifdef DEBUG
#define DPRINTF(what) printf what
#define DPRINTF(what)

Best regards,
Igor Stasenko AKA sig.

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