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J. Nick Koston
6cdcdbb798
Reading IROM addresses from IROM code causes LoadStoreError on ESP8266 due to the direct-mapped flash cache — the reading code and target address can share a cache line, evicting the function mid-execution. Remove is_return_addr() and rely on linker-symbol IROM bounds (_irom0_text_start/_end) to eliminate false positives instead. This is less precise but crash-safe.
