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[Fix][Relax] Fix potential out-of-bounds access in TupleRewriterNode #18120

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Merged
merged 2 commits into from
Jul 19, 2025
Merged

[Fix][Relax] Fix potential out-of-bounds access in TupleRewriterNode #18120

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Phoslight Jul 16, 2025
19c5dfd
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Phoslight Jul 17, 2025
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5 changes: 3 additions & 2 deletions src/relax/ir/dataflow_expr_rewriter.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -379,8 +379,9 @@ Map<Var, Expr> TupleRewriterNode::GenerateVariableRewrites(const Array<Binding>&
for (size_t j_rev = 1; j_rev < info_vec.size(); j_rev++) {
size_t j = info_vec.size() - j_rev - 1;
if (info_vec[j].matches[i] && !info_vec[j].used &&
std::all_of(indices.begin() + (j + 1), indices.end(),
[j](size_t prev_binding_index) { return j != prev_binding_index; })) {
(j + 1 >= indices.size() ||
std::all_of(indices.begin() + (j + 1), indices.end(),
[j](size_t prev_binding_index) { return j != prev_binding_index; }))) {
return j;
}
}
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