Mirror of roytam1's UXP fork just in case Moonchild and Tobin decide to go after him
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#define MOZ_HEAP_CLASS __attribute__((annotate("moz_heap_class")))
#define MOZ_IMPLICIT __attribute__((annotate("moz_implicit")))
#include <stddef.h>
struct MOZ_HEAP_CLASS Heap {
int i;
Heap() {}
MOZ_IMPLICIT Heap(int a) {}
Heap(int a, int b) {}
void *operator new(size_t x) throw() { return 0; }
void *operator new(size_t blah, char *buffer) { return buffer; }
};
template <class T>
struct MOZ_HEAP_CLASS TemplateClass {
T i;
};
void gobble(void *) { }
void gobbleref(const Heap&) { }
void misuseHeapClass(int len) {
Heap invalid; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in an automatic variable}}
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'}}
static Heap invalidStatic; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}}
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'}}
gobble(&invalid);
gobble(&invalidStatic);
gobble(&alsoInvalid[0]);
gobbleref(Heap()); // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a temporary}}
gobbleref(Heap(10, 20)); // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a temporary}}
gobbleref(Heap(10)); // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a temporary}}
gobbleref(10); // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a temporary}}
gobble(new Heap);
gobble(new Heap[10]);
gobble(new TemplateClass<int>);
gobble(len <= 5 ? &invalid : new Heap);
char buffer[sizeof(Heap)];
gobble(new (buffer) Heap);
}
Heap invalidStatic; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}}
struct RandomClass {
Heap nonstaticMember; // expected-note {{'RandomClass' is a heap type because member 'nonstaticMember' is a heap type 'Heap'}}
static Heap staticMember; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}}
};
struct MOZ_HEAP_CLASS RandomHeapClass {
Heap nonstaticMember;
static Heap staticMember; // expected-error {{variable of type 'Heap' only valid on the heap}} expected-note {{value incorrectly allocated in a global variable}}
};
struct BadInherit : Heap {}; // expected-note {{'BadInherit' is a heap type because it inherits from a heap type 'Heap'}}
struct MOZ_HEAP_CLASS GoodInherit : Heap {};
void useStuffWrongly() {
BadInherit i; // expected-error {{variable of type 'BadInherit' only valid on the heap}} expected-note {{value incorrectly allocated in an automatic variable}}
RandomClass r; // expected-error {{variable of type 'RandomClass' only valid on the heap}} expected-note {{value incorrectly allocated in an automatic variable}}
}