зеркало из https://github.com/mozilla/gecko-dev.git
29 строки
811 B
C++
29 строки
811 B
C++
#define MOZ_NONHEAP_CLASS __attribute__((annotate("moz_nonheap_class")))
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#define MOZ_HEAP_ALLOCATOR \
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_Pragma("GCC diagnostic push") \
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_Pragma("GCC diagnostic ignored \"-Wgcc-compat\"") \
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__attribute__((annotate("moz_heap_allocator"))) \
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_Pragma("GCC diagnostic pop")
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#include <stdlib.h>
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#include <memory>
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struct MOZ_NONHEAP_CLASS X {
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};
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void *operator new(size_t x, int qual) MOZ_HEAP_ALLOCATOR {
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return ::operator new(x);
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}
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template <typename T>
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T *customAlloc() MOZ_HEAP_ALLOCATOR {
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T *arg = static_cast<T*>(malloc(sizeof(T)));
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return new (arg) T();
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}
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template <typename T>
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void misuseX(T q) {
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X *foo = customAlloc<X>(); // expected-error {{variable of type 'X' is not valid on the heap}}
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X *foo2 = new (100) X(); // expected-error {{variable of type 'X' is not valid on the heap}}
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}
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