Display Objective-C variables

[mcarans]

Objective-C variables can be printed with GDB's po and print (see https://stackoverflow.com/a/8175652/464618). It would be great if that were made very simple in gdbgui.

[mcarans]

In case helpful here is an Objective-C test program.

Here is a basic main.m:

#import <Foundation/Foundation.h>

int main(void)
{
  NSString * const name = @"test string!!!";
  NSLog(@"name =  %@", name);
  float myval = 3.75;
  NSLog(@"myval = %f", myval);
  NSArray           *weekArray;
  weekArray = [NSArray arrayWithObjects: @"Sun", @"Mon" @"Tue", @"Wed", \
                                       @"Thr", @"Fri", @"Sat", nil];
  NSLog(@"weekArray =  %@", weekArray);
}

and a GNUmakefile:

include $(GNUSTEP_MAKEFILES)/common.make

TOOL_NAME = HelloWorld
HelloWorld_HEADERS =
HelloWorld_OBJC_FILES = main.m
HelloWorld_RESOURCE_FILES =

include $(GNUSTEP_MAKEFILES)/tool.make

You should be able to install gnustep with something like sudo apt install gnustep or equivalent for your distro. gnustep also exists in msys2 mingw packages.

You'll have to source the gnustep script file that sets stuff up source /usr/share/GNUstep/Makefiles/GNUstep.sh

You may need to force use of clang if gcc gives errors ie.

export CC=/usr/bin/clang
export CXX=/usr/bin/clang++

You can then do make debug=yes. Other make options are outlined here.

Please let me know if you decide to try this and have any issues.