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Avoid "variable might be clobbered by longjmp" warning.

On older-model gcc, the original coding of UTILITY_BEGIN_QUERY() candraw this error because of multiple assignments to _needCleanup.Rather than mark that variable volatile, we can suppress the warningby arranging to have just one unconditional assignment before PG_TRY.

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src/backend/tcop
- utility.c

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-5

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`‎src/backend/tcop/utility.c‎`

Lines changed: 2 additions & 5 deletions

Original file line number	Diff line number	Diff line change
`@@ -380,12 +380,9 @@ ProcessUtility(Node *parsetree,`
`380`	`380`	`*/`
`381`	`381`	`#defineUTILITY_BEGIN_QUERY(isComplete) \`
`382`	`382`	`do { \`
`383`		`-bool_needCleanup = false; \`
	`383`	`+bool_needCleanup; \`
`384`	`384`	`\`
`385`		`-if (isComplete) \`
`386`		`-{ \`
`387`		`-_needCleanup = EventTriggerBeginCompleteQuery(); \`
`388`		`-} \`
	`385`	`+_needCleanup = (isComplete) && EventTriggerBeginCompleteQuery(); \`
`389`	`386`	`\`
`390`	`387`	`PG_TRY(); \`
`391`	`388`	`{ \`

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Commit58bc481

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`‎src/backend/tcop/utility.c‎`

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