Mirror of roytam1's UXP fork just in case Moonchild and Tobin decide to go after him
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#define MOZ_NON_TEMPORARY_CLASS __attribute__((annotate("moz_non_temporary_class")))
#define MOZ_IMPLICIT __attribute__((annotate("moz_implicit")))
#include <stddef.h>
struct MOZ_NON_TEMPORARY_CLASS NonTemporary {
int i;
NonTemporary() {}
MOZ_IMPLICIT NonTemporary(int a) {}
NonTemporary(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_NON_TEMPORARY_CLASS TemplateClass {
T i;
};
void gobble(void *) { }
void gobbleref(const NonTemporary&) { }
template <class T>
void gobbleanyref(const T&) { }
void misuseNonTemporaryClass(int len) {
NonTemporary invalid;
NonTemporary alsoInvalid[2];
static NonTemporary invalidStatic;
static NonTemporary alsoInvalidStatic[2];
gobble(&invalid);
gobble(&invalidStatic);
gobble(&alsoInvalid[0]);
gobbleref(NonTemporary()); // expected-error {{variable of type 'NonTemporary' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
gobbleref(NonTemporary(10, 20)); // expected-error {{variable of type 'NonTemporary' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
gobbleref(NonTemporary(10)); // expected-error {{variable of type 'NonTemporary' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
gobbleref(10); // expected-error {{variable of type 'NonTemporary' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
gobbleanyref(TemplateClass<int>()); // expected-error {{variable of type 'TemplateClass<int>' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
gobble(new NonTemporary);
gobble(new NonTemporary[10]);
gobble(new TemplateClass<int>);
gobble(len <= 5 ? &invalid : new NonTemporary);
char buffer[sizeof(NonTemporary)];
gobble(new (buffer) NonTemporary);
}
void defaultArg(const NonTemporary& arg = NonTemporary()) {
}
NonTemporary invalidStatic;
struct RandomClass {
NonTemporary nonstaticMember; // expected-note {{'RandomClass' is a non-temporary type because member 'nonstaticMember' is a non-temporary type 'NonTemporary'}}
static NonTemporary staticMember;
};
struct MOZ_NON_TEMPORARY_CLASS RandomNonTemporaryClass {
NonTemporary nonstaticMember;
static NonTemporary staticMember;
};
struct BadInherit : NonTemporary {}; // expected-note {{'BadInherit' is a non-temporary type because it inherits from a non-temporary type 'NonTemporary'}}
void useStuffWrongly() {
gobbleanyref(BadInherit()); // expected-error {{variable of type 'BadInherit' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
gobbleanyref(RandomClass()); // expected-error {{variable of type 'RandomClass' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
}