/* { dg-options "-std=gnu89 -fms-extensions" } *//* Enabling Microsoft mode makes all of the tests equivalent.  Checked vs   Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 12.00.8168 for 80x86 */struct A { char a; };struct B {  struct A;  char b;};char testB[sizeof(struct B) == 2 * sizeof(struct A) ? 1 : -1];struct C {  struct D { char d; };  char c;};char testC[sizeof(struct C) == 2 * sizeof(struct A) ? 1 : -1];char testD[sizeof(struct D) == sizeof(struct A) ? 1 : -1];struct E {  struct { char z; };  char e;};char testE[sizeof(struct E) == 2 * sizeof(struct A) ? 1 : -1];typedef struct A typedef_A;struct F {  typedef_A;  char f;};char testF[sizeof(struct F) == 2 * sizeof(struct A) ? 1 : -1];