Now that I look at it, int_array_enum() didn't work either.

tglsfdc · tglsfdc · commit 728775d781a1 · 2005-01-27T21:49:57.000Z
diff --git a/contrib/intagg/int_aggregate.c b/contrib/intagg/int_aggregate.c
@@ -201,6 +201,10 @@ int_enum(PG_FUNCTION_ARGS)
 	if (!fcinfo->context)
 	{
 		/* Allocate a working context */
+		MemoryContext	oldcontext;
+
+		oldcontext = MemoryContextSwitchTo(fcinfo->flinfo->fn_mcxt);
+
 		pc = (CTX *) palloc(sizeof(CTX));
 
 		/* Don't copy attribute if you don't need to */
@@ -218,6 +222,7 @@ int_enum(PG_FUNCTION_ARGS)
 		}
 		pc->num = 0;
 		fcinfo->context = (Node *) pc;
+		MemoryContextSwitchTo(oldcontext);
 	}
 	else	/* use an existing one */
 		pc = (CTX *) fcinfo->context;

Original file line number	Diff line number	Diff line change
`@@ -201,6 +201,10 @@ int_enum(PG_FUNCTION_ARGS)`
`201`	`201`	`if (!fcinfo->context)`
`202`	`202`	`{`
`203`	`203`	`/* Allocate a working context */`
	`204`	`+ MemoryContext oldcontext;`
	`205`	`+`
	`206`	`+ oldcontext = MemoryContextSwitchTo(fcinfo->flinfo->fn_mcxt);`
	`207`	`+`
`204`	`208`	`pc = (CTX *) palloc(sizeof(CTX));`
`205`	`209`
`206`	`210`	`/* Don't copy attribute if you don't need to */`
`@@ -218,6 +222,7 @@ int_enum(PG_FUNCTION_ARGS)`
`218`	`222`	`}`
`219`	`223`	`pc->num = 0;`
`220`	`224`	`fcinfo->context = (Node *) pc;`
	`225`	`+ MemoryContextSwitchTo(oldcontext);`
`221`	`226`	`}`
`222`	`227`	`else /* use an existing one */`
`223`	`228`	`pc = (CTX *) fcinfo->context;`