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Avoid potential buffer overflow crash

A pointer to a C string was treated as a pointer to a "name" datum andpassed to SPI_execute_plan(). This pointer would then end up beingpassed through datumCopy(), which would try to copy the entire 64 bytesof name data, thus running past the end of the C string. Fix byconverting the string to a proper name structure.Found by LLVM AddressSanitizer.

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src/backend/utils/adt
- ruleutils.c

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`‎src/backend/utils/adt/ruleutils.c`

Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -430,7 +430,7 @@ pg_get_viewdef_worker(Oid viewoid, int prettyFlags)`
`430`	`430`	`* Get the pg_rewrite tuple for the view's SELECT rule`
`431`	`431`	`*/`
`432`	`432`	`args[0]=ObjectIdGetDatum(viewoid);`
`433`		`-args[1]=PointerGetDatum(ViewSelectRuleName);`
	`433`	`+args[1]=DirectFunctionCall1(namein,CStringGetDatum(ViewSelectRuleName));`
`434`	`434`	`nulls[0]=' ';`
`435`	`435`	`nulls[1]=' ';`
`436`	`436`	`spirc=SPI_execute_plan(plan_getviewrule,args,nulls, true,2);`

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Commit4403229

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`‎src/backend/utils/adt/ruleutils.c`

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