зеркало из https://github.com/mozilla/gecko-dev.git
71 строка
2.9 KiB
C++
71 строка
2.9 KiB
C++
#define MOZ_NON_TEMPORARY_CLASS __attribute__((annotate("moz_non_temporary_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_NON_TEMPORARY_CLASS NonTemporary {
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int i;
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NonTemporary() {}
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MOZ_IMPLICIT NonTemporary(int a) {}
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NonTemporary(int a, int b) {}
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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_NON_TEMPORARY_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 NonTemporary&) { }
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template <class T>
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void gobbleanyref(const T&) { }
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void misuseNonTemporaryClass(int len) {
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NonTemporary invalid;
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NonTemporary alsoInvalid[2];
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static NonTemporary invalidStatic;
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static NonTemporary alsoInvalidStatic[2];
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gobble(&invalid);
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gobble(&invalidStatic);
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gobble(&alsoInvalid[0]);
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gobbleref(NonTemporary()); // expected-error {{variable of type 'NonTemporary' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
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gobbleref(NonTemporary(10, 20)); // expected-error {{variable of type 'NonTemporary' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
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gobbleref(NonTemporary(10)); // expected-error {{variable of type 'NonTemporary' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
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gobbleref(10); // expected-error {{variable of type 'NonTemporary' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
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gobbleanyref(TemplateClass<int>()); // expected-error {{variable of type 'TemplateClass<int>' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
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gobble(new NonTemporary);
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gobble(new NonTemporary[10]);
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gobble(new TemplateClass<int>);
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gobble(len <= 5 ? &invalid : new NonTemporary);
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char buffer[sizeof(NonTemporary)];
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gobble(new (buffer) NonTemporary);
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}
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void defaultArg(const NonTemporary& arg = NonTemporary()) {
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}
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NonTemporary invalidStatic;
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struct RandomClass {
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NonTemporary nonstaticMember; // expected-note {{'RandomClass' is a non-temporary type because member 'nonstaticMember' is a non-temporary type 'NonTemporary'}}
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static NonTemporary staticMember;
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};
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struct MOZ_NON_TEMPORARY_CLASS RandomNonTemporaryClass {
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NonTemporary nonstaticMember;
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static NonTemporary staticMember;
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};
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struct BadInherit : NonTemporary {}; // expected-note {{'BadInherit' is a non-temporary type because it inherits from a non-temporary type 'NonTemporary'}}
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void useStuffWrongly() {
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gobbleanyref(BadInherit()); // expected-error {{variable of type 'BadInherit' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
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gobbleanyref(RandomClass()); // expected-error {{variable of type 'RandomClass' is not valid in a temporary}} expected-note {{value incorrectly allocated in a temporary}}
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}
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