Hi all,
this is probably only partially GNUstep related but anyway. I have just started
to port my code - which builds fine [using GNUstep make] on current GNUstep and
all MacOSX versions I have here - to 64Bit. For that I opened the GNUMakefile
and replaced
ADDITIONAL_OBJCFLAGS += -m32 -Wno-deprecated-declarations -Wno-deprecated
-Wno-format-security
ADDITIONAL_CFLAGS += -m32
ADDITIONAL_LDFLAGS += -m32
with
ADDITIONAL_OBJCFLAGS += -m64 -Wno-deprecated-declarations -Wno-deprecated
-Wno-format-security
ADDITIONAL_CFLAGS += -m64
ADDITIONAL_LDFLAGS += -m64
When compiling
Protocol *_protocol = …;
char *types = NULL;
types = [_protocol descriptionForInstanceMethod:aSelector]->types; //
-m32 delivers objc_method_description*, -m64 delivers objc_object*
I get
SRProxy.m:419:29: warning: instance method '-descriptionForInstanceMethod:' not
found (return type defaults to 'id') [-Wobjc-method-access]
types = [_protocol descriptionForInstanceMethod:aSelector]->types;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/objc/Protocol.h:45:12: note: receiver is instance of class
declared here
@interface Protocol : NSObject
^
SRProxy.m:419:70: error: no member named 'types' in 'struct objc_object'
It seems that once we switch to 64Bit descriptionForInstanceMethod: to no
longer delivers a
struct objc_method_description
as it used to do but now a
struct objc_object
which seems completely wrong!??
Am I supposed to encountered that kind of difficulties when going to 64Bit in
2019? I thought I was the last one running 32Bit code!?
On GNUstep I use
struct objc_method_description desc;
desc = GSProtocolGetMethodDescriptionRecursive(_protocol,
aSelector, YES, YES);
if (desc.name == NULL && desc.types == NULL)
{
desc = GSProtocolGetMethodDescriptionRecursive(_protocol,
aSelector, YES, NO);
}
types = desc.types;
for getting the types. I haven’t tried that with -m64 yet.
Any idea what this is all about and how to fix it?
Thanks a lot,
Andreas
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