Ivar definitions show 'long' type encoding as 'long long' type encoding
- by Frank C.
I've found what I think may be a bug with Ivar and Objective-C runtime. I'm using XCode 3.2.1 and associated libraries, developing a 64 bit app on X86_64 (MacBook Pro).
Where I would expect the type encoding for the following "longVal" to be 'l', the Ivar encoding is showing a 'q' (which is a 'long long').
Anyone else seeing this? Simplified code and output follows:
Code:
#import <Foundation/Foundation.h>
#import <objc/runtime.h>
@interface Bug : NSObject
{
long longVal;
long long longerVal;
}
@property (nonatomic,assign) long longVal;
@property (nonatomic,assign) long long longerVal;
@end
@implementation Bug
@synthesize longVal,longerVal;
@end
int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
unsigned int ivarCount=0;
Ivar *ivars= class_copyIvarList([Bug class], &ivarCount);
for(unsigned int x=0;x<ivarCount;x++) {
NSLog(@"Name [%@] encoding [%@]",
[NSString stringWithCString:ivar_getName(ivars[x]) encoding:NSUTF8StringEncoding],
[NSString stringWithCString:ivar_getTypeEncoding(ivars[x]) encoding:NSUTF8StringEncoding]);
}
[pool drain];
return 0;
}
And here is output from debug console:
This GDB was configured as "x86_64-apple-darwin".tty /dev/ttys000
Loading program into debugger…
sharedlibrary apply-load-rules all
Program loaded.
run
[Switching to process 6048]
Running…
2010-03-17 22:16:29.138 ivarbug[6048:a0f] Name [longVal] encoding [q]
2010-03-17 22:16:29.146 ivarbug[6048:a0f] Name [longerVal] encoding [q]
(gdb) continue
Not a pretty picture!
-- Frank
