forked from mirrors/gecko-dev
d4f4b8e36b
This unveiled a couple UB-ish uses (missing repr(C) or use of enums). Differential Revision: https://phabricator.services.mozilla.com/D210752
13 lines
319 B
Rust
13 lines
319 B
Rust
use bytemuck::TransparentWrapper;
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#[repr(transparent)]
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struct Wrap(Box<u32>);
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// SAFETY: it's #[repr(transparent)]
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unsafe impl TransparentWrapper<Box<u32>> for Wrap {}
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fn main() {
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let value = Box::new(5);
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// This used to duplicate the wrapped value, creating a double free :(
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Wrap::wrap(value);
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}
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