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Jihyeon Gim
34a3e4152e
The Prepare and ReadyTransfer wrappers embed string views built from Go heap strings inside request structs passed to C by pointer. The cgo pointer check rejects such requests when the string data is an unpinned Go heap pointer, so any live PREPARE or READY call with header-derived strings panicked at the call boundary and the route returned a 500. Constant strings passed the check because their data lives in read-only static storage, which is why standalone callers kept working while the gateway did not. Pin the string bytes with runtime.Pinner for the duration of the cgo call and drop the now redundant KeepAlive calls in those two wrappers. The other string-taking wrappers pass rc_str_in by value and are unaffected. Also add a deviceless cgo boundary regression test that calls the real Prepare wrapper with heap-backed interior-pointer strings and an invalid opcode, so C returns from argument validation before the server handle is touched.