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Differential D20561 Diff 223564 clang/test/Sema/address-packed-member-memops.c

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				// RUN: %clang_cc1 -fsyntax-only -verify %s
				// expected-no-diagnostics

				struct B {
				int x, y, z, w;
				} b;

				struct __attribute__((packed)) A {
				struct B b;
				} a;

				typedef __typeof__(sizeof(int)) size_t;

				void memcpy(void dest, const void *src, size_t n);
				int memcmp(const void s1, const void s2, size_t n);
				void memmove(void dest, const void *src, size_t n);
				void memset(void s, int c, size_t n);

				int x;

				void foo(void) {
				memcpy(&a.b, &b, sizeof(b));
				memmove(&a.b, &b, sizeof(b));
				memset(&a.b, 0, sizeof(b));
				x = memcmp(&a.b, &b, sizeof(b));
				}