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comparison: build/clang-plugin/tests/TestNonHeapClass.cpp
build/clang-plugin/tests/TestNonHeapClass.cpp
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| -1:000000000000 | 0:8e987878e8b5 |
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| 1 #define MOZ_NONHEAP_CLASS __attribute__((annotate("moz_nonheap_class"))) | |
| 2 #define MOZ_STACK_CLASS __attribute__((annotate("moz_stack_class"))) | |
| 3 #include <stddef.h> | |
| 4 | |
| 5 struct MOZ_NONHEAP_CLASS NonHeap { | |
| 6 int i; | |
| 7 void *operator new(size_t x) { return 0; } | |
| 8 void *operator new(size_t blah, char *buffer) { return buffer; } | |
| 9 }; | |
| 10 | |
| 11 template <class T> | |
| 12 struct MOZ_NONHEAP_CLASS TemplateClass { | |
| 13 T i; | |
| 14 }; | |
| 15 | |
| 16 void gobble(void *) { } | |
| 17 | |
| 18 void misuseNonHeapClass(int len) { | |
| 19 NonHeap valid; | |
| 20 NonHeap alsoValid[2]; | |
| 21 static NonHeap validStatic; | |
| 22 static NonHeap alsoValidStatic[2]; | |
| 23 | |
| 24 gobble(&valid); | |
| 25 gobble(&validStatic); | |
| 26 gobble(&alsoValid[0]); | |
| 27 | |
| 28 gobble(new NonHeap); // expected-error {{variable of type 'NonHeap' is not valid on the heap}} | |
| 29 gobble(new NonHeap[10]); // expected-error {{variable of type 'NonHeap' is not valid on the heap}} | |
| 30 gobble(new TemplateClass<int>); // expected-error {{variable of type 'TemplateClass<int>' is not valid on the heap}} | |
| 31 gobble(len <= 5 ? &valid : new NonHeap); // expected-error {{variable of type 'NonHeap' is not valid on the heap}} | |
| 32 | |
| 33 char buffer[sizeof(NonHeap)]; | |
| 34 gobble(new (buffer) NonHeap); | |
| 35 } | |
| 36 | |
| 37 NonHeap validStatic; | |
| 38 struct RandomClass { | |
| 39 NonHeap nonstaticMember; // expected-note {{'RandomClass' is a non-heap class because member 'nonstaticMember' is a non-heap class 'NonHeap'}} | |
| 40 static NonHeap staticMember; | |
| 41 }; | |
| 42 struct MOZ_NONHEAP_CLASS RandomNonHeapClass { | |
| 43 NonHeap nonstaticMember; | |
| 44 static NonHeap staticMember; | |
| 45 }; | |
| 46 | |
| 47 struct BadInherit : NonHeap {}; // expected-note {{'BadInherit' is a non-heap class because it inherits from a non-heap class 'NonHeap'}} | |
| 48 struct MOZ_NONHEAP_CLASS GoodInherit : NonHeap {}; | |
| 49 | |
| 50 void useStuffWrongly() { | |
| 51 gobble(new BadInherit); // expected-error {{variable of type 'BadInherit' is not valid on the heap}} | |
| 52 gobble(new RandomClass); // expected-error {{variable of type 'RandomClass' is not valid on the heap}} | |
| 53 } | |
| 54 | |
| 55 // Stack class overrides non-heap classes. | |
| 56 struct MOZ_STACK_CLASS StackClass {}; | |
| 57 struct MOZ_NONHEAP_CLASS InferredStackClass : GoodInherit { | |
| 58 NonHeap nonstaticMember; | |
| 59 StackClass stackClass; // expected-note {{'InferredStackClass' is a stack class because member 'stackClass' is a stack class 'StackClass'}} | |
| 60 }; | |
| 61 | |
| 62 InferredStackClass global; // expected-error {{variable of type 'InferredStackClass' only valid on the stack}} |
