Re: Compiler warnings with the new base code

[Fred Kiefer]

Am 15.02.2010 15:18, schrieb Richard Frith-Macdonald:
> On 15 Feb 2010, at 13:47, Fred Kiefer wrote:
>> After the reorganisation of base I get a lot more compiler warnings
>> then before. It would be great if somebody could look into these. I
>> am using gcc 4.4.1 on a 64 bit system.
> 
> I don't actually have access to a 64bit system at the moment (I do
> everything on my laptop in either a gnu/linux or mswindows 32bit
> virtual machine nowadays). I'll see if I can get a 64bit system up
> and running at some point soon, but it's not going to be immediate.

The latest version of base added a few new warnings :-)

Beside the ones we already know about:

GSObjCRuntime.m: In function ‘GSObjCMethodNames’:

GSObjCRuntime.m:154: warning: dereferencing type-punned pointer will
break strict-aliasing rules
GSObjCRuntime.m:154: warning: dereferencing type-punned pointer will
break strict-aliasing rules
In file included from GSObjCRuntime.m:1212:

../../Headers/Additions/GNUstepBase/GSIMap.h: In function
‘GSIMapCountByEnumeratingWithStateObjectsCount’:
../../Headers/Additions/GNUstepBase/GSIMap.h:981: warning: dereferencing
type-punned pointer will break strict-aliasing rules


We now also have these:

Compiling file NSMethodSignature.m ...

NSMethodSignature.m: In function ‘-[NSMethodSignature
_initWithObjCTypes:]’:
NSMethodSignature.m:417: warning: format ‘%d’ expects type ‘int’, but
argument 3 has type ‘NSUInteger’
NSMethodSignature.m:423: warning: format ‘%d’ expects type ‘int’, but
argument 3 has type ‘NSUInteger’

Compiling file NSSpellServer.m ...

NSSpellServer.m: In function ‘-[NSSpellServer
_findMisspelledWordInString:language:ignoredWords:wordCount:countOnly:]’:


NSSpellServer.m:440: warning: passing argument 4 of
‘spellServer:findMisspelledWordInString:language:wordCount:countOnly:’
from incompatible pointer type

NSSpellServer.m:440: note: expected ‘NSInteger *’ but argument is of
type ‘int *’

 Compiling file NSString.m ...

NSString.m: In function ‘+[NSString initialize]’:

NSString.m:598: warning: ‘register_printf_function’ is deprecated
(declared at /usr/include/printf.h:107)
NSString.m:603: warning: passing argument 3 of
‘register_printf_function’ from incompatible pointer type
/usr/include/printf.h:107: note: expected ‘int (*)(const struct
printf_info *, size_t,  int *)’ but argument is of type ‘int (*)(const
struct printf_info *, size_t,  NSInteger *)’



They mean real trouble as this code will fail on all platforms where
NSInteger is different from int. Some of these should be easy to
resolve, others look really annoying.