Commite75feb2

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Fix off by one error in JSON extract path code.

Bug report by David Wheeler, diagnosis assistance from Tom Lane.

1 parent48a2cd3 commite75feb2Copy full SHA for e75feb2

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Lines changed: 6 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -682,9 +682,13 @@ get_array_start(void *state)`
`682`	`682`	`ereport(ERROR,`
`683`	`683`	`(errcode(ERRCODE_INVALID_PARAMETER_VALUE),`
`684`	`684`	`errmsg("cannot extract field from a non-object")));`
`685`		`-/* initialize array count for this nesting level */`
	`685`	`+/*`
	`686`	`+ * initialize array count for this nesting level`
	`687`	`+ * Note: the lex_level seen by array_start is one less than that seen by`
	`688`	`+ * the elements of the array.`
	`689`	`+ */`
`686`	`690`	`if (_state->search_type==JSON_SEARCH_PATH&&`
`687`		`-lex_level <=_state->npath)`
	`691`	`+lex_level<_state->npath)`
`688`	`692`	`_state->array_level_index[lex_level]=-1;`
`689`	`693`	`}`
`690`	`694`

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