| 1 | /* RUN: %clang_cc1 -Wall -fsyntax-only -verify -std=c89 -pedantic %s |
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| 2 | */ |
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| 3 | |
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| 4 | @class NSArray; |
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| 5 | |
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| 6 | void f(NSArray *a) { |
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| 7 | id keys; |
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| 8 | for (int i in a); /* expected-error{{selector element type 'int' is not a valid object}} */ |
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| 9 | for ((id)2 in a); /* expected-error{{selector element is not a valid lvalue}} */ |
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| 10 | for (2 in a); /* expected-error{{selector element is not a valid lvalue}} */ |
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| 11 | |
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| 12 | /* This should be ok, 'thisKey' should be scoped to the loop in question, |
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| 13 | * and no diagnostics even in pedantic mode should happen. |
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| 14 | * rdar://6814674 |
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| 15 | */ |
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| 16 | for (id thisKey in keys); /* expected-warning {{unused variable 'thisKey'}} */ |
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| 17 | for (id thisKey in keys); /* expected-warning {{unused variable 'thisKey'}} */ |
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| 18 | } |
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| 19 | |
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| 20 | /* // rdar://9072298 */ |
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| 21 | @protocol NSObject @end |
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| 22 | |
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| 23 | @interface NSObject <NSObject> { |
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| 24 | Class isa; |
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| 25 | } |
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| 26 | @end |
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| 27 | |
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| 28 | typedef struct { |
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| 29 | unsigned long state; |
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| 30 | id *itemsPtr; |
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| 31 | unsigned long *mutationsPtr; |
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| 32 | unsigned long extra[5]; |
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| 33 | } NSFastEnumerationState; |
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| 34 | |
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| 35 | @protocol NSFastEnumeration |
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| 36 | |
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| 37 | - (unsigned long)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(unsigned long)len; |
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| 38 | |
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| 39 | @end |
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| 40 | |
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| 41 | int main () |
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| 42 | { |
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| 43 | NSObject<NSFastEnumeration>* collection = ((void*)0); |
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| 44 | for (id thing in collection) { } /* expected-warning {{unused variable 'thing'}} */ |
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| 45 | |
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| 46 | return 0; |
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| 47 | } |
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| 48 | |
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| 49 | /* rdar://problem/11068137 */ |
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| 50 | @interface Test2 |
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| 51 | @property (assign) id prop; |
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| 52 | @end |
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| 53 | void test2(NSObject<NSFastEnumeration> *collection) { |
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| 54 | Test2 *obj; |
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| 55 | for (obj.prop in collection) { /* expected-error {{selector element is not a valid lvalue}} */ |
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| 56 | } |
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| 57 | } |
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| 58 | |
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| 59 | int cond(); |
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| 60 | |
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| 61 | void test3(NSObject<NSFastEnumeration> *a0, NSObject<NSFastEnumeration> *a1) { |
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| 62 | for (id i in a0) { /* expected-note 2 {{jump enters Objective-C fast enumeration loop}} */ |
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| 63 | for (id j in a1) { /* expected-note 2 {{jump enters Objective-C fast enumeration loop}} */ |
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| 64 | (void)i, (void)j; |
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| 65 | label0: |
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| 66 | if (cond()) |
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| 67 | goto label1; |
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| 68 | } |
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| 69 | label1: |
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| 70 | if (cond()) |
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| 71 | goto label0; /* expected-error {{cannot jump from this goto statement to its label}} */ |
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| 72 | if (cond()) |
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| 73 | goto label2; |
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| 74 | } |
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| 75 | |
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| 76 | label2: |
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| 77 | if (cond()) |
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| 78 | goto label0; /* expected-error {{cannot jump from this goto statement to its label}} */ |
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| 79 | if (cond()) |
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| 80 | goto label1; /* expected-error{{cannot jump from this goto statement to its label}} */ |
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| 81 | } |
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| 82 | |
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