Open Radar

 
Summary:
A struct with a property that has a default value specified, and also has a type specifier will cause a segmentation fault:11 if you create an extension to that struct in a separate file, and implement an initializer. Note, if you remove the type specifier it will build successfully. 

Steps to Reproduce:
1. Create a new file in a project and declare a new struct. ( struct myStruct { } )
2. Give the struct a string property with a type specifier and a default value. (var myString: String = “myString”)
3. Add a new file to the project and add an extension to the struct declared in step 1. ( extension myStruct { }
4. Add a blank initializer to the extension. ( init() { } )
5. Try to build the target

Expected Results:
Expect the target to build successfully 

Actual Results:
segmentation fault: 11

Regression:
If you remove the type specifier from the property ( var myString = “myString” ) it will build successfully.

Notes:
As far as I can tell this problem will occur with any type of property, and any initializer signature in the extension. See example project attached.