Mixing lower/upper case properties confuses clang.

mixed.m

#import <Foundation/Foundation.h>

@interface A : NSObject
{
  NSString *lowercaseString;
  NSString *LowercaseString;
}

@property (strong) NSString *lowercaseString;
@property (strong) NSString *LowercaseString;
@end

@implementation A
@synthesize lowercaseString;
@synthesize LowercaseString;

- (id) init
{
    self = [super init];
    if (self) {
    	self.lowercaseString = @"lower";
        self.LowercaseString = @"UPPER";
        NSLog(@"value = %@", self.lowercaseString);
        NSLog(@"value = %@", self.LowercaseString);
    }
    return self;
}
@end

int main(int argc, char **argv)
{
    A *a = [A new]; // will show "Yay"
}

% ./a.out
2013-01-21 13:28:54.279 a.out[11571:707] value = UPPER
2013-01-21 13:28:54.281 a.out[11571:707] value = (null)