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Commit5d08000

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Correctly copy the target host identification in PQcancelCreate.
PQcancelCreate failed to copy struct pg_conn_host's "type" field,instead leaving it zero (a/k/a CHT_HOST_NAME). This seeminglyhas no great ill effects if it should have been CHT_UNIX_SOCKETinstead, but if it should have been CHT_HOST_ADDRESS then anull-pointer dereference will occur when the cancelConn is used.Bug: #18974Reported-by: Maxim Boguk <maxim.boguk@gmail.com>Author: Sergei Kornilov <sk@zsrv.org>Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>Discussion:https://postgr.es/m/18974-575f02b2168b36b3@postgresql.orgBackpatch-through: 17
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‎src/interfaces/libpq/fe-cancel.c‎

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Original file line numberDiff line numberDiff line change
@@ -137,6 +137,7 @@ PQcancelCreate(PGconn *conn)
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gotooom_error;
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originalHost=conn->connhost[conn->whichhost];
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cancelConn->connhost[0].type=originalHost.type;
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if (originalHost.host)
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{
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cancelConn->connhost[0].host=strdup(originalHost.host);

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