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Commit93a0bf2

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Set pg_setting.pending_restart when pertinent config lines are removed
This changes the behavior of examining the pg_file_settings view afterchanging a config option that requires restart. The user needs to knowthat any change of such options does not take effect until a restart,and this worked correctly if the line is edited without removing it.However, for the case where the line is removed altogether, the flagdoesn't get set, because a flag was only set in set_config_option, butthat's not called for lines removed. Repair.(Ref.: commits62d16c7 anda486e35)Author: Álvaro Herrera <alvherre@alvh.no-ip.org>Reviewed-by: Daniel Gustafsson <daniel@yesql.se>Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>Discussion:https://postgr.es/m/202107262302.xsfdfc5sb7sh@alvherre.pgsql
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‎src/backend/utils/misc/guc-file.l

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@@ -346,6 +346,8 @@ ProcessConfigFileInternal(GucContext context, bool applySettings, int elevel)
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continue;
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if (gconf->context < PGC_SIGHUP)
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{
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/* The removal can't be effective without a restart */
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gconf->status |= GUC_PENDING_RESTART;
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ereport(elevel,
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(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
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errmsg("parameter\"%s\" cannot be changed without restarting the server",

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