/* { dg-do run } */
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/* { dg-do run } */
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/* { dg-options "-std=gnu99 -Wall -Wextra -O1" } */
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/* { dg-options "-std=gnu99 -Wall -Wextra -O1" } */
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extern void *memset (void*, int, __SIZE_TYPE__);
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extern void *memset (void*, int, __SIZE_TYPE__);
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extern void abort (void);
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extern void abort (void);
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struct radix_tree_root {
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struct radix_tree_root {
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unsigned int height;
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unsigned int height;
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struct radix_tree_node *rnode;
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struct radix_tree_node *rnode;
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};
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};
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struct radix_tree_node {
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struct radix_tree_node {
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unsigned int count;
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unsigned int count;
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void *slots[64];
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void *slots[64];
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unsigned long tags[2];
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unsigned long tags[2];
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};
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};
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struct radix_tree_path {
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struct radix_tree_path {
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struct radix_tree_node *node, **slot;
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struct radix_tree_node *node, **slot;
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int offset;
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int offset;
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};
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};
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void radix_tree_tag_clear(struct radix_tree_root *root, unsigned long index)
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void radix_tree_tag_clear(struct radix_tree_root *root, unsigned long index)
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{
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{
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struct radix_tree_path path[7], *pathp = path;
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struct radix_tree_path path[7], *pathp = path;
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unsigned int height, shift;
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unsigned int height, shift;
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volatile unsigned long *addr;
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volatile unsigned long *addr;
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height = root->height;
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height = root->height;
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shift = (height - 1) * 6;
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shift = (height - 1) * 6;
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path[0].slot = &root->rnode;
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path[0].slot = &root->rnode;
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while (height > 0) {
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while (height > 0) {
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int offset;
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int offset;
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offset = (index >> shift) & (64-1);
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offset = (index >> shift) & (64-1);
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pathp[1].offset = offset;
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pathp[1].offset = offset;
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pathp[1].node = *pathp[0].slot;
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pathp[1].node = *pathp[0].slot;
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pathp[1].slot = (struct radix_tree_node **)
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pathp[1].slot = (struct radix_tree_node **)
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(pathp[1].node->slots + offset);
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(pathp[1].node->slots + offset);
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pathp++;
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pathp++;
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shift -= 6;
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shift -= 6;
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height--;
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height--;
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}
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}
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addr = &(pathp->node->tags[0]) + 1;
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addr = &(pathp->node->tags[0]) + 1;
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*addr = 574;
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*addr = 574;
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}
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}
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struct radix_tree_root r;
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struct radix_tree_root r;
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struct radix_tree_node node;
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struct radix_tree_node node;
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int main ()
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int main ()
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{
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{
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r.height = 1;
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r.height = 1;
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r.rnode = &node;
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r.rnode = &node;
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memset (&node, 0, sizeof (node));
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memset (&node, 0, sizeof (node));
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node.count = 1;
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node.count = 1;
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radix_tree_tag_clear (&r, 13);
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radix_tree_tag_clear (&r, 13);
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return 0;
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return 0;
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}
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}
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