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xcode - Fixing ARC error when using Objective-C object in struct

I am having an issue with my Xcode project.

I have these lines:

typedef struct
{
    NSString *escapeSequence;
    unichar uchar;
}

and I am getting this error:

ARC forbids Objective-C objects in structs or unions.

How can I fix it?

I cannot seem to find how this violates ARC but I would love to learn.

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1 Answer

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by (71.8m points)

Change it to:

typedef struct
{
    __unsafe_unretained NSString *escapeSequence;
    unichar uchar;
}MyStruct;

But, I recommend following Apple rules from this documentation.

ARC Enforces New Rules

You cannot use object pointers in C structures.
Rather than using a struct, you can create an Objective-C class to manage the data instead.


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