Restrict objc2 ivar offset to 32-bit

0xced · Sep 11, 2013 · 93e7c6a · 93e7c6a
1 parent 9bf3446
commit 93e7c6a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Source/CDObjectiveC2Processor.m b/Source/CDObjectiveC2Processor.m
@@ -406,7 +406,7 @@ - (NSArray *)loadIvarsAtAddress:(uint64_t)address;
                 NSString *name       = [self.machOFile stringAtAddress:objc2Ivar.name];
                 NSString *typeString = [self.machOFile stringAtAddress:objc2Ivar.type];
                 CDMachOFileDataCursor *offsetCursor = [[CDMachOFileDataCursor alloc] initWithFile:self.machOFile address:objc2Ivar.offset];
-                NSUInteger offset = [offsetCursor readPtr];
+                NSUInteger offset = (uint32_t)[offsetCursor readPtr]; // objc-runtime-new.h: "offset is 64-bit by accident" => restrict to 32-bit
 
                 CDOCInstanceVariable *ivar = [[CDOCInstanceVariable alloc] initWithName:name typeString:typeString offset:offset];
                 [ivars addObject:ivar];