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radix tree test suite: Enable ubsan

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Add support for the undefined behaviour sanitizer and fix the bugs
that ubsan pointed out.  Nothing major, and all in the test suite,
not the code.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox
2018-05-19 16:30:54 -04:00
parent c9b933521a
commit d1c0d5e3c6
2 changed files with 14 additions and 11 deletions
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20
tools/testing/radix-tree/main.c
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@@ -27,20 +27,22 @@ void __gang_check(unsigned long middle, long down, long up, int chunk, int hop)
item_check_present(&tree, middle + idx);
item_check_absent(&tree, middle + up);
item_gang_check_present(&tree, middle - down,
up + down, chunk, hop);
item_full_scan(&tree, middle - down, down + up, chunk);
if (chunk > 0) {
item_gang_check_present(&tree, middle - down, up + down,
chunk, hop);
item_full_scan(&tree, middle - down, down + up, chunk);
}
item_kill_tree(&tree);
}
void gang_check(void)
{
__gang_check(1 << 30, 128, 128, 35, 2);
__gang_check(1 << 31, 128, 128, 32, 32);
__gang_check(1 << 31, 128, 128, 32, 100);
__gang_check(1 << 31, 128, 128, 17, 7);
__gang_check(0xffff0000, 0, 65536, 17, 7);
__gang_check(0xfffffffe, 1, 1, 17, 7);
__gang_check(1UL << 30, 128, 128, 35, 2);
__gang_check(1UL << 31, 128, 128, 32, 32);
__gang_check(1UL << 31, 128, 128, 32, 100);
__gang_check(1UL << 31, 128, 128, 17, 7);
__gang_check(0xffff0000UL, 0, 65536, 17, 7);
__gang_check(0xfffffffeUL, 1, 1, 17, 7);
}
void __big_gang_check(void)