[Bf-cycles] OSL problems in OSX

[Dalai Felinto]

Hi there,

I'm helping Jens to get OSL 1.2 to work on OSX as well. OSL is
building and Blender builds as well. However we are now stumbling into
a strange problem.

When rendering with OSL we get the errors:
http://www.pasteall.org/34953
* note, Parameter 1 is the first parameter of the array (index 0)


The error comes from the register_closure() function in the OSL source
code, see below:

//OpenShadingLanguage/src/liboslexec/shadingsys.cpp :~507
void ShadingSystemImpl::register_closure(...) {
    for (int i = 0; params && params[i].type != TypeDesc(); ++i) {
        if (params[i].key == NULL && params[i].type.size() !=
(size_t)params[i].field_size) {
            error ("Parameter %d of '%s' closure is assigned to a
field of incompatible size", i + 1, name);


This function is called from //intern/cycles/kernel/osl/osl_closures.cpp:62
    ss->register_closure(name, id, params, prepare,
generic_closure_setup, generic_closure_compare);

A breakpoint to this line and found out that the value of params[0] is
indeed problematic:
Basically params[0].type.size() is zero, while params[0].field_size is 12:
http://www.pasteall.org/34955


In Linux this is working though. Does anyone has any clues on what is
going wrong here?
If someone has a Linux debug of Blender with OSL could you please:

b osl_closures.cpp:62
r
[in blender, render something ... it will get back to the debugger]
p params[0]
p params[0].type.size()
p params[0].field_size

Thanks,
Dalai