зеркало из https://github.com/mozilla/gecko-dev.git
65 строки
3.4 KiB
C++
65 строки
3.4 KiB
C++
#define MOZ_HEAP_CLASS __attribute__((annotate("moz_heap_class")))
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#define MOZ_IMPLICIT __attribute__((annotate("moz_implicit")))
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#include <stddef.h>
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struct MOZ_HEAP_CLASS Heap {
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int i;
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Heap() {}
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MOZ_IMPLICIT Heap(int i) {}
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Heap(int i, int j) {}
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void *operator new(size_t x) throw() { return 0; }
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void *operator new(size_t blah, char *buffer) { return buffer; }
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};
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template <class T>
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struct MOZ_HEAP_CLASS TemplateClass {
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T i;
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};
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void gobble(void *) { }
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void gobbleref(const Heap&) { }
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void misuseHeapClass(int len) {
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Heap invalid; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in an automatic variable}}
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Heap alsoInvalid[2]; // expected-error {{variable of type 'Heap [2]' only valid on the heap}} expected-note {{value incorrectly allocated in an automatic variable}} expected-note {{'Heap [2]' is a heap type because it is an array of heap type 'Heap'}}
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static Heap invalidStatic; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}}
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static Heap alsoInvalidStatic[2]; // expected-error {{variable of type 'Heap [2]' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}} expected-note {{'Heap [2]' is a heap type because it is an array of heap type 'Heap'}}
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gobble(&invalid);
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gobble(&invalidStatic);
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gobble(&alsoInvalid[0]);
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gobbleref(Heap()); // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a temporary}}
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gobbleref(Heap(10, 20)); // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a temporary}}
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gobbleref(Heap(10)); // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a temporary}}
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gobbleref(10); // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a temporary}}
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gobble(new Heap);
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gobble(new Heap[10]);
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gobble(new TemplateClass<int>);
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gobble(len <= 5 ? &invalid : new Heap);
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char buffer[sizeof(Heap)];
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gobble(new (buffer) Heap);
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}
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Heap invalidStatic; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}}
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struct RandomClass {
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Heap nonstaticMember; // expected-note {{'RandomClass' is a heap type because member 'nonstaticMember' is a heap type 'Heap'}}
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static Heap staticMember; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}}
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};
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struct MOZ_HEAP_CLASS RandomHeapClass {
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Heap nonstaticMember;
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static Heap staticMember; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}}
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};
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struct BadInherit : Heap {}; // expected-note {{'BadInherit' is a heap type because it inherits from a heap type 'Heap'}}
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struct MOZ_HEAP_CLASS GoodInherit : Heap {};
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void useStuffWrongly() {
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BadInherit i; // expected-error {{variable of type 'BadInherit' only valid on the heap}} expected-note {{value incorrectly allocated in an automatic variable}}
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RandomClass r; // expected-error {{variable of type 'RandomClass' only valid on the heap}} expected-note {{value incorrectly allocated in an automatic variable}}
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}
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