Re: Subject: gdb & BOOL

• Subject: Re: Subject: gdb & BOOL
• From: Jonathan del Strother <email@hidden>
• Date: Wed, 30 Nov 2005 13:19:16 +0000
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On 30 Nov 2005, at 10:58, Thomas Engelmeier wrote:

gdb seems to be interpreting BOOL types as pointers - in both the console and the variable viewer, they're being given as (for instance) 0x1000000.
bool types (note the lowercase) are interpreted normally, and appear as 'true' or 'false'.

What happens is pretty apparent if you look at the definitions of BOOL (defined in <objc/objc.h>) and Boolean (<Corefoundation/ CFBase.h>).

Both are typedef'd as {un}signed char, so the debugger has no chance to display anything but contents of an char.

Except it's not being displayed as the contents of a char.

Here's a code snippet :

	char testChar = 'a';
	BOOL testBOOL = YES;
	bool testBool = true;

and here's some gdb output :

(gdb) p testChar
$1 = 97 'a'

(gdb) p testBOOL
$2 = 0x1612000

(gdb) p testBool
$3 = true

So, is there something odd going on here, or am I missing something?

Jon

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