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Fix psql crash while parsing SQL file whose encoding is different from

client encoding and the client encoding is not *safe* one. Such anexample is, file encoding is UTF-8 and client encoding SJIS. Patchcontributed by Jiang Guiqing.

1 parent9009ec0 commiteb851c9Copy full SHA for eb851c9

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src/bin/psql
- psqlscan.l

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`‎src/bin/psql/psqlscan.l`

Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -1656,7 +1656,7 @@ prepare_buffer(const char txt, int len, char *txtcopy)`
`1656`	`1656`	`/* first byte should always be okay... */`
`1657`	`1657`	`newtxt[i] = txt[i];`
`1658`	`1658`	`i++;`
`1659`		`-while (--thislen >0)`
	`1659`	`+while (--thislen >0 && i < len)`
`1660`	`1660`	`newtxt[i++] = (char)0xFF;`
`1661`	`1661`	`}`
`1662`	`1662`	`}`

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Commiteb851c9

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`‎src/bin/psql/psqlscan.l`

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