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📄 gnu99-init-1.c

📁 this is a gcc file, you can download it and learn its usetility, for further detail please look at t
💻 C
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/* Test for GNU extensions to C99 designated initializers *//* Origin: Jakub Jelinek <jakub@redhat.com> *//* { dg-do run } *//* { dg-options "-std=gnu99" } */typedef __SIZE_TYPE__ size_t;extern int memcmp (const void *, const void *, size_t);extern void abort (void);extern void exit (int);int a[][2][4] = { [2 ... 4][0 ... 1][2 ... 3] = 1, [2] = 2, [2][0][2] = 3 };struct E {};struct F { struct E H; };struct G { int I; struct E J; int K; };struct H { int I; struct F J; int K; };struct G k = { .J = {}, 1 };struct H l = { .J.H = {}, 2 };struct H m = { .J = {}, 3 };struct I { int J; int K[3]; int L; };struct M { int N; struct I O[3]; int P; };struct M n[] = { [0 ... 5].O[1 ... 2].K[0 ... 1] = 4, 5, 6, 7 };struct M o[] = { [0 ... 5].O = { [1 ... 2].K[0 ... 1] = 4 },		 [5].O[2].K[2] = 5, 6, 7 };struct M p[] = { [0 ... 5].O[1 ... 2].K = { [0 ... 1] = 4 },		 [5].O[2].K[2] = 5, 6, 7 };int q[3][3] = { [0 ... 1] = { [1 ... 2] = 23 }, [1][2] = 24 };int r[1] = { [0 ... 1 - 1] = 27 };int main (void){  int x, y, z;  if (a[2][0][0] != 2 || a[2][0][2] != 3)    abort ();  a[2][0][0] = 0;  a[2][0][2] = 1;  for (x = 0; x <= 4; x++)    for (y = 0; y <= 1; y++)      for (z = 0; z <= 3; z++)	if (a[x][y][z] != (x >= 2 && z >= 2))	  abort ();  if (k.I || l.I || m.I || k.K != 1 || l.K != 2 || m.K != 3)    abort ();  for (x = 0; x <= 5; x++)    {      if (n[x].N || n[x].O[0].J || n[x].O[0].L)	abort ();      for (y = 0; y <= 2; y++)	if (n[x].O[0].K[y])	  abort ();      for (y = 1; y <= 2; y++)	{	  if (n[x].O[y].J)	    abort ();	  if (n[x].O[y].K[0] != 4)	    abort ();	  if (n[x].O[y].K[1] != 4)	    abort ();	  if ((x < 5 || y < 2) && (n[x].O[y].K[2] || n[x].O[y].L))	    abort ();	}      if (x < 5 && n[x].P)	abort ();    }  if (n[5].O[2].K[2] != 5 || n[5].O[2].L != 6 || n[5].P != 7)    abort ();  if (memcmp (n, o, sizeof (n)) || sizeof (n) != sizeof (o))    abort ();  if (memcmp (n, p, sizeof (n)) || sizeof (n) != sizeof (p))    abort ();  if (q[0][0] || q[0][1] != 23 || q[0][2] != 23)    abort ();  if (q[1][0] || q[1][1] != 23 || q[1][2] != 24)    abort ();  if (q[2][0] || q[2][1] || q[2][2])    abort ();  if (r[0] != 27)    abort ();  exit (0);}

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