llvm-project/clang/test/CodeGen/vla.c

// RUN: clang-cc %s -emit-llvm -o %t

int b(char* x);

// Extremely basic VLA test
void a(int x) {
  char arry[x];
  arry[0] = 10;
  b(arry);
}

int c(int n)
{
  return sizeof(int[n]);
}

int f0(int x) {
  int vla[x];
  return vla[x-1];
}

void
f(int count)
{
 int a[count];

  do {  } while (0);

  if (a[0] != 3) {
  }
}

void g(int count) {
  // Make sure we emit sizes correctly in some obscure cases
  int (*a[5])[count];
  int (*b)[][count];
}