From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.dg/pr18241-2.c | 65 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/pr18241-2.c (limited to 'gcc/testsuite/gcc.dg/pr18241-2.c') diff --git a/gcc/testsuite/gcc.dg/pr18241-2.c b/gcc/testsuite/gcc.dg/pr18241-2.c new file mode 100644 index 000000000..a3ff1de0f --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr18241-2.c @@ -0,0 +1,65 @@ +/* { dg-do run } */ +/* { dg-options "-std=gnu99 -Wall -Wextra -O1" } */ + +extern void *memset (void*, int, __SIZE_TYPE__); +extern void abort (void); + +struct radix_tree_root { + unsigned int height; + struct radix_tree_node *rnode; +}; + +struct radix_tree_node { + unsigned int count; + void *slots[64]; + unsigned long tags[2]; +}; + +struct radix_tree_path { + struct radix_tree_node *node, **slot; + int offset; +}; + +void radix_tree_tag_clear(struct radix_tree_root *root, unsigned long index) +{ + struct radix_tree_path path[7], *pathp = path; + unsigned int height, shift; + volatile unsigned long *addr; + + height = root->height; + + shift = (height - 1) * 6; + path[0].slot = &root->rnode; + + while (height > 0) { + int offset; + + offset = (index >> shift) & (64-1); + pathp[1].offset = offset; + pathp[1].node = *pathp[0].slot; + pathp[1].slot = (struct radix_tree_node **) + (pathp[1].node->slots + offset); + pathp++; + shift -= 6; + height--; + } + + addr = &(pathp->node->tags[0]) + 1; + *addr = 574; +} + +struct radix_tree_root r; +struct radix_tree_node node; + +int main () +{ + r.height = 1; + r.rnode = &node; + + memset (&node, 0, sizeof (node)); + + node.count = 1; + + radix_tree_tag_clear (&r, 13); + return 0; +} -- cgit v1.2.3