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Auto merge of #103831 - chenyukang:yukang/fix-103751-ice, r=nagisa

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Fix capacity overflow issue during transmutability check

Fixes #103751
This commit is contained in:
bors 2022-11-05 13:48:30 +00:00
commit 6b8d9dd0a0
3 changed files with 55 additions and 2 deletions
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4
compiler/rustc_transmute/src/layout/tree.rs
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@ -436,8 +436,8 @@ pub(crate) mod rustc {
// finally: padding
let padding_span = trace_span!("adding trailing padding").entered();
let padding_needed = layout_summary.total_size - variant_layout.size();
if padding_needed > 0 {
if layout_summary.total_size > variant_layout.size() {
let padding_needed = layout_summary.total_size - variant_layout.size();
tree = tree.then(Self::padding(padding_needed));
};
drop(padding_span);