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19 lines
868 B
Rust
19 lines
868 B
Rust
// stderr-per-bitwidth
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// Strip out raw byte dumps to make comparison platform-independent:
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// normalize-stderr-test "(the raw bytes of the constant) \(size: [0-9]*, align: [0-9]*\)" -> "$1 (size: $$SIZE, align: $$ALIGN)"
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// normalize-stderr-test "([0-9a-f][0-9a-f] |╾─*a(lloc)?[0-9]+(\+[a-z0-9]+)?─*╼ )+ *│.*" -> "HEX_DUMP"
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use std::alloc::Layout;
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// ok
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const LAYOUT_VALID: Layout = unsafe { Layout::from_size_align_unchecked(0x1000, 0x08) };
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// not ok, since alignment needs to be non-zero.
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const LAYOUT_INVALID_ZERO: Layout = unsafe { Layout::from_size_align_unchecked(0x1000, 0x00) };
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//~^ ERROR it is undefined behavior to use this value
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// not ok, since alignment needs to be a power of two.
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const LAYOUT_INVALID_THREE: Layout = unsafe { Layout::from_size_align_unchecked(9, 3) };
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//~^ ERROR it is undefined behavior to use this value
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fn main() {}
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