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Add CHECK_FOR_INTERRUPTS() to the repeat() function

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The repeat() function loops for potentially a long time without
ever checking for interrupts. This prevents, for example, a query
cancel from interrupting until the work is all done. Fix by
inserting a CHECK_FOR_INTERRUPTS() into the loop.

Backpatch to all supported versions.

Discussion: https://www.postgresql.org/message-id/flat/8692553c-7fe8-17d9-cbc1-7cddb758f4c6%40joeconway.com
This commit is contained in:
Joe Conway 2020-05-28 13:17:04 -04:00
parent 34301c9c56
commit 36758c472e
1 changed files with 2 additions and 1 deletions
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3
src/backend/utils/adt/oracle_compat.c
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@ -19,7 +19,7 @@
#include "utils/builtins.h"
#include "utils/formatting.h"
#include "mb/pg_wchar.h"
#include "miscadmin.h"
static text *dotrim(const char *string, int stringlen,
const char *set, int setlen,
@ -1062,6 +1062,7 @@ repeat(PG_FUNCTION_ARGS)
{
memcpy(cp, sp, slen);
cp += slen;
CHECK_FOR_INTERRUPTS();
}
PG_RETURN_TEXT_P(result);