================
@@ -2549,10 +2572,15 @@ LogicalResult
OperationConverter::legalizeConvertedArgumentTypes(
});
return liveUserIt == val.user_end() ? nullptr : *liveUserIt;
};
- for (auto &r : rewriterImpl.rewrites)
- if (auto *rewrite = dyn_cast<BlockTypeConversionRewrite>(r.get()))
- if (failed(rewrite->materializeLiveConversions(findLiveUser)))
+ // Note: `rewrites` may be reallocated as the loop is running.
+ for (int64_t i = 0; i < rewriterImpl.rewrites.size(); ++i) {
----------------
matthias-springer wrote:
That won't work here because things may get added to the vector while the loop
is running and that could invalidate the iterator (when the vector reallocates
storage).
https://github.com/llvm/llvm-project/pull/81759
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