gcc/testsuite/gcc.dg/torture/pr54098.c

   1 /* { dg-do compile } */
   2
   3 extern int printf(const char *, ...);
   4 struct list_head {
   5         struct list_head *next, *prev;
   6 };
   7 struct resource {
   8         unsigned long long start;
   9         unsigned long long end;
  10         unsigned long flags;
  11         struct resource *parent, *sibling, *child;
  12 };
  13 struct pci_dev {
  14         struct list_head bus_list;
  15         struct resource resource[12];
  16 };
  17 struct pci_bus {
  18         struct list_head devices;
  19         unsigned char secondary;
  20         unsigned char subordinate;
  21 };
  22 struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n);
  23 static struct resource *find_free_bus_resource(struct pci_bus *bus, unsigned long type) {
  24         int i;
  25         struct resource *r;
  26         unsigned long type_mask = 0x00000100 | 0x00000200 | 0x00002000;
  27         for (i = 0; (r = pci_bus_resource_n(bus, i)) || i < 4; i++) {
  28                 if (r && (r->flags & type_mask) == type && !r->parent) return r;
  29         }
  30         return ((void *)0);
  31 }
  32 static unsigned long long calculate_memsize(unsigned long long size, unsigned long long min_size, unsigned long long size1, unsigned long long old_size, unsigned long long align) {
  33         if (old_size == 1 ) old_size = 0;
  34         if (size < old_size) size = old_size;
  35         return size;
  36 }
  37 void pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long type, unsigned long long min_size, unsigned long long add_size, void *realloc_head) {
  38         struct pci_dev *dev;
  39         unsigned long long min_align, align, size, size0, size1;
  40         int order;
  41         struct resource *b_res = find_free_bus_resource(bus, type);
  42         unsigned long long children_add_size = 0;
  43         if (!b_res) return;
  44         for (dev = ({
  45                                 const typeof( ((typeof(*dev) *)0)->bus_list ) *__mptr = ((&bus->devices)->next);
  46                                 (typeof(*dev) *)( (char *)__mptr - __builtin_offsetof(typeof(*dev),bus_list) );
  47                                 }
  48                    );
  49                         &dev->bus_list != (&bus->devices);
  50                         dev = ({
  51                                 const typeof( ((typeof(*dev) *)0)->bus_list ) *__mptr = (dev->bus_list.next);
  52                                 (typeof(*dev) *)( (char *)__mptr - __builtin_offsetof(typeof(*dev),bus_list) );
  53                                 }
  54                               )) {
  55                 int i;
  56                 for (i = 0; i < 12; i++) {
  57                         struct resource *r = &dev->resource[i];
  58                         unsigned long long r_size;
  59                         if (r->parent || (r->flags & mask) != type) continue;
  60                         r_size = r->end - r->start + 1;
  61                         if (order > 11) {
  62                                 printf("%d: %pR %#llx\n", i, r, (unsigned long long) align);
  63                         }
  64                         size += r_size;
  65                 }
  66         }
  67         if (children_add_size > add_size) add_size = children_add_size;
  68         size1 = (!realloc_head || (realloc_head && !add_size)) ? size0 : calculate_memsize(size, min_size+add_size, 0, b_res->end - b_res->start + 1, min_align);
  69         if (!size0 && !size1) {
  70                 printf("%pR %02x-%02x\n", b_res, bus->secondary, bus->subordinate);
  71         }
  72 }