Open Radar

 
Summary:
When running on the device, on arm64,  NSInvocation crashes with bad access, if you try to return a struct, with 3 or more variables, with 2 or more different type(defs) of the same underlying type, i.e. double, double, NSTimeInterval

Steps to Reproduce:
typedef struct {
  NSTimeInterval t0;
  double t1;
  double t2;
} Foo;
 
- (Foo)check
{
  Foo f = (Foo){
    .t0 = 1,
    .t1 = 1,
    .t2 = 1,
  };
  return f;
}
 
SEL selector = @selector(check);
NSMethodSignature *sig = [self methodSignatureForSelector:selector];
NSInvocation *i = [NSInvocation invocationWithMethodSignature:sig];
[i setTarget:self];
[i setSelector:selector];
[i invoke];

Expected Results:
The call should return the actual struct.

Actual Results:
EXC_BAD_ACCESS when returning it.

Version:
8.2 (12D508)

Notes:
Changing t0 to double prevents the crash.
Xcode Version 6.2 (6C131e)

Configuration:
iPhone 6 64gb