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Avoid getting bit by roundoff error while checking $Safe::VERSION.

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Per report from Mark Kirkwood.
This commit is contained in:
Tom Lane 2004-11-24 18:47:38 +00:00
parent e17766c12e
commit 5597fee8d7
1 changed files with 8 additions and 3 deletions
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11
src/pl/plperl/plperl.c
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@ -33,7 +33,7 @@
* ENHANCEMENTS, OR MODIFICATIONS.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/pl/plperl/plperl.c,v 1.63 2004/11/23 00:21:17 tgl Exp $
* $PostgreSQL: pgsql/src/pl/plperl/plperl.c,v 1.64 2004/11/24 18:47:38 tgl Exp $
*
**********************************************************************/
@ -238,13 +238,18 @@ plperl_safe_init(void)
;
SV *res;
float safe_version;
double safe_version;
res = eval_pv(safe_module, FALSE); /* TRUE = croak if failure */
safe_version = SvNV(res);
eval_pv((safe_version < 2.09 ? safe_bad : safe_ok), FALSE);
/*
* We actually want to reject safe_version < 2.09, but it's risky to
* assume that floating-point comparisons are exact, so use a slightly
* smaller comparison value.
*/
eval_pv((safe_version < 2.0899 ? safe_bad : safe_ok), FALSE);
plperl_safe_init_done = true;
}