I have previously used lldb to print structures like NSRect or NSSize of 3rd party processes without issues. But I am struggling in modern versions of Xcode to inspect them. Namely since the introduction of Xcode 15 and dwim-print I am struggling with printing structures. I want to state everything works on binaries that were compiled by me. However if I attach to another processes such as PhotoBoot.app (SIP disabled) I cannot even print frame on NSWindow. Yet it is nicely shown by Xcode view hierarchy.
(lldb) e @import AppKit
(lldb) po (NSRect)[[[NSApp windows] firstObject] frame]
error: <user expression 16>:1:9: attempt to use a deleted function
1 | (NSRect)[[[NSApp windows] firstObject] frame]
| ^
note: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFCGTypes.h:77:13: destructor of 'CGRect' is implicitly deleted because field 'origin' has no destructor
77 | CGPoint origin;
|
I have found workarounds but I am confused on how to use dwim-print
Wrapping it in NSValue (boxable)
(lldb) po [[(NSWindow*)0x13c606800 valueForKey:@"frame"] description]
NSRect: {{434, 480}, {692, 550}}
Manually finding offset of CGRect structure within NSWindow class
(lldb) p (ptrdiff_t)ivar_getOffset((struct Ivar *)class_getInstanceVariable([NSWindow class], "_frame"))
(ptrdiff_t) 224
(lldb) p (CGRect *)(0x13c606800 + 224)
(CGRect *) (origin = (x = 434, y = 480), size = (width = 692, height = 550))
Please do not suggest NSStringFromRect or casting to NSWindow as it doesn't work as well. I repeat everything works if I run my own app (doesn't work in 3rd party apps.)
