24 lines
871 B
Rust
24 lines
871 B
Rust
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// error-pattern:bounds check
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fn main() {
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// This should cause a bounds-check failure, but may not if we do our
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// bounds checking by comparing the scaled index to the vector's
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// address-bounds, since we've scaled the index to wrap around to the
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// address of the 0th cell in the array (even though the index is
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// huge).
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let x = [1u,2u,3u];
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vec::unpack_slice(x) {|p, _len|
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let base = p as uint; // base = 0x1230 say
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let idx = base / sys::size_of::<uint>(); // idx = 0x0246 say
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#error("ov1 base = 0x%x", base);
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#error("ov1 idx = 0x%x", idx);
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#error("ov1 sizeof::<uint>() = 0x%x", sys::size_of::<uint>());
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#error("ov1 idx * sizeof::<uint>() = 0x%x",
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idx * sys::size_of::<uint>());
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// This should fail.
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#error("ov1 0x%x", x[idx]);
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}
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}
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