nasty NSDateFormatter parsing bug.

gistfile1.m

    static NSLocale *enUSLocale = nil;
    static NSDateFormatter *timestampFormatter = nil;
    static dispatch_once_t onceToken;

    dispatch_once(&onceToken, ^{
        enUSLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
        timestampFormatter = [[NSDateFormatter alloc] init];
        
        [timestampFormatter setLocale:enUSLocale];
        [timestampFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss.S"];
        [timestampFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
    });

(gdb) po dateString
2012-05-01 00:53:46.999976
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 00:53:46.9999760"]
Can't print the description of a NIL object.
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 00:53:46.0999760"]
2012-05-01 00:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 00:53:46.8999760"]
2012-05-01 00:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 00:53:46.9"]
2012-05-01 00:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 00:53:46.999"]
2012-05-01 00:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 00:53:46.9999"]
Can't print the description of a NIL object.
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.9999"]
Can't print the description of a NIL object.
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.9998"]
Can't print the description of a NIL object.
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.9991"]
2012-05-01 01:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.9993"]
2012-05-01 01:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.9994"]
2012-05-01 01:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.9995"]
Can't print the description of a NIL object.
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.99945"]
2012-05-01 01:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.99949"]
2012-05-01 01:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.99950"]
Can't print the description of a NIL object.
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.99951"]
Can't print the description of a NIL object.
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.9994999"]
2012-05-01 01:53:46 +0000
(gdb) po [timestampFormatter dateFromString:@"2012-05-01 01:53:46.9994999999999"]
2012-05-01 01:53:46 +0000
(gdb)