gcc/testsuite/gcc.dg/Wrestrict-17.c

   1 /* PR tree-optimization/85826 - ICE in gimple-ssa-warn-restruct on
   2    a variable-length struct
   3    { dg-do compile }
   4    { dg-options "-O2 -Wall" }  */
   5
   6 int f (int n)
   7 {
   8   typedef struct { int a[n]; } S;
   9
  10   S a;
  11   __attribute__ ((noinline)) S g (void) { return a; }
  12
  13   a.a[0] = 1;
  14   a.a[9] = 2;
  15
  16   S b;
  17   b = g ();
  18
  19   return b.a[0] == 1 && b.a[9] == 2;
  20 }