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Fix outfuncs.c to dump A_Const nodes representing NULLs correctly. This has

been broken since forever, but was not noticed because people seldom lookat raw parse trees. AFAIK, no impact on users except that debug_print_parsemight fail; but patch it all the way back anyway. Per report from Jeff Ross.

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src/backend/nodes
- outfuncs.c

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`‎src/backend/nodes/outfuncs.c‎`

Lines changed: 5 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.311 2007/06/11 22:22:40 tgl Exp $`
	`11`	`+ * $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.312 2007/07/17 01:21:43 tgl Exp $`
`12`	`12`	`*`
`13`	`13`	`* NOTES`
`14`	`14`	`* Every node type that can appear in stored rules' parsetrees must`
`@@ -1900,6 +1900,10 @@ _outValue(StringInfo str, Value *value)`
`1900`	`1900`	`/* internal representation already has leading 'b' */`
`1901`	`1901`	`appendStringInfoString(str,value->val.str);`
`1902`	`1902`	`break;`
	`1903`	`+caseT_Null:`
	`1904`	`+/* this is seen only within A_Const, not in transformed trees */`
	`1905`	`+appendStringInfoString(str,"NULL");`
	`1906`	`+break;`
`1903`	`1907`	`default:`
`1904`	`1908`	`elog(ERROR,"unrecognized node type: %d", (int)value->type);`
`1905`	`1909`	`break;`

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Commit804f016

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`‎src/backend/nodes/outfuncs.c‎`

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