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Re: lib/49745: tests/include/sys/t_bitops: improvement
The following reply was made to PR lib/49745; it has been noted by GNATS.
From: Tetsuya Isaki <isaki%pastel-flower.jp@localhost>
netbsd-bugs%netbsd.org@localhost, christos%zoulas.com@localhost (Christos Zoulas)
Subject: Re: lib/49745: tests/include/sys/t_bitops: improvement
Date: Wed, 18 Mar 2015 23:38:27 +0900
At Sun, 15 Mar 2015 10:32:48 -0400,
Christos Zoulas wrote:
> | > | >Description:
> | > | The current ilog2()'s implementation consists of 32bit variable
> | > | part, 64bit variable part and constant part. But 'ilog2_basic'
> | > | test checks only 64bit variable. 32bit variable and constant
> | > | were not checked.
> | :
> | > I would prefer if you put the constants in an array and loop instead
> | > of inlining it.
> | It can not be changed to loop because it tests
> | __builtin_constant_p() part of ilog2(). If all these inline tests
> | passed, ATF_TC_BODY(ilog2_const, tc) is compiled into
> Ah, ok. Please put a comment to that effect.
Ok, I'll add a comment as following:
--- t_bitops.c.ORG 2015-03-18 23:31:26.000000000 +0900
+++ t_bitops.c 2015-03-18 23:32:55.000000000 +0900
@@ -216,6 +216,10 @@
+ * These inlines test __builtin_constant_p() part of ilog2()
+ * at compile time, so don't change it to loop. PR lib/49745
ATF_REQUIRE(ilog2(0x0000000000000001ULL) == 0);
ATF_REQUIRE(ilog2(0x0000000000000002ULL) == 1);
ATF_REQUIRE(ilog2(0x0000000000000004ULL) == 2);
Tetsuya Isaki <isaki%pastel-flower.jp@localhost / isaki%NetBSD.org@localhost>
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