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1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -o - %s | FileCheck -check-prefix CHECK-LP64 %s
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2 // RUN: %clang_cc1 -triple i386-apple-darwin9 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -o - %s | FileCheck -check-prefix CHECK-LP32 %s
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3
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4 typedef struct objc_class *Class;
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5
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6 typedef struct objc_object {
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7 Class isa;
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8 } *id;
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9
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10 @interface I
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11 + (Class) class;
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12 - (void)meth : (id)object : (id)src_object;
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13 + (unsigned char) isSubclassOfClass:(Class)aClass ;
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14 @end
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15
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16 @implementation I
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17 + (Class) class {return 0;}
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18 + (unsigned char) isSubclassOfClass:(Class)aClass {return 0;}
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19 - (void)meth : (id)object : (id)src_object {
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20 [object->isa isSubclassOfClass:[I class]];
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21
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22 [(*object).isa isSubclassOfClass:[I class]];
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23
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24 object->isa = src_object->isa;
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25 (*src_object).isa = (*object).isa;
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26 }
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27 @end
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28
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29
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30 // rdar 7470820
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31 static Class MyClass;
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32
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33 Class Test(const void *inObject1) {
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34 if(((id)inObject1)->isa == MyClass)
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35 return ((id)inObject1)->isa;
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36 return (id)0;
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37 }
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38
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39 // rdar 7609722
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40 @interface Foo {
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41 @public
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42 id isa;
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43 }
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44 +(id)method;
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45 @end
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46
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47 id Test2() {
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48 if([Foo method]->isa)
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49 return (*[Foo method]).isa;
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50 return [Foo method]->isa;
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51 }
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52
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53 // rdar 7709015
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54 @interface Cat {}
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55 @end
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56
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57 @interface SuperCat : Cat {}
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58 +(void)geneticallyAlterCat:(Cat *)cat;
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59 @end
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60
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61 @implementation SuperCat
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62 + (void)geneticallyAlterCat:(Cat *)cat {
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63 Class dynamicSubclass;
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64 ((id)cat)->isa = dynamicSubclass;
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65 }
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66 @end
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67 // CHECK-LP64: %{{.*}} = load i8*, i8** %
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68 // CHECK-NEXT: %{{.*}} = bitcast i8* %{{.*}} to i8**
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69 // CHECK-NEXT: store i8* %{{.*}}, i8** %{{.*}}
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70
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71 // CHECK-LP32: %{{.*}} = load i8*, i8** %
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72 // CHECK-NEXT: %{{.*}} = bitcast i8* %{{.*}} to i8**
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73 // CHECK-NEXT: store i8* %{{.*}}, i8** %{{.*}}
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