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* [gcc(refs/users/aoliva/heads/testme)] [libstdc++] [testsuite] expect zero entropy matching implementation
@ 2023-06-23 20:12 Alexandre Oliva
0 siblings, 0 replies; 2+ messages in thread
From: Alexandre Oliva @ 2023-06-23 20:12 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:36a0ffc5acb8bb5ecb583f41095964d2b62f71f5
commit 36a0ffc5acb8bb5ecb583f41095964d2b62f71f5
Author: Alexandre Oliva <oliva@adacore.com>
Date: Fri Jun 23 17:09:49 2023 -0300
[libstdc++] [testsuite] expect zero entropy matching implementation
random_device::get_entropy() returns 0.0 when _GLIBCXX_USE_DEV_RANDOM
is not defined, but the test expects otherwise. Adjust.
for libstdc++-v3/ChangeLog
* testsuite/26_numerics/random/random_device/entropy.cc:
Expect get_entropy to return zero when _GLIBCXX_USE_DEV_RANDOM
is not defined.
Diff:
---
.../testsuite/26_numerics/random/random_device/entropy.cc | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc b/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc
index 9f529f5d814..3e6872c8a61 100644
--- a/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc
+++ b/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc
@@ -13,7 +13,13 @@ test01()
VERIFY( std::random_device(token).entropy() == 0.0 );
using result_type = std::random_device::result_type;
+#ifdef _GLIBCXX_USE_DEV_RANDOM
const double max = std::numeric_limits<result_type>::digits;
+#else
+ // random_device::entropy() always returns 0.0 when
+ // _GLIBCXX_USE_DEV_RANDOM is not defined.
+ const double max = 0.0;
+#endif
for (auto token : { "/dev/random", "/dev/urandom" })
if (__gnu_test::random_device_available(token))
@@ -30,7 +36,7 @@ test01()
VERIFY( entropy == max );
}
- for (auto token : { "getentropy", "arc4random" })
+ for (auto token : { "getentropy", "arc4random" })
if (__gnu_test::random_device_available(token))
{
const double entropy = std::random_device(token).entropy();
^ permalink raw reply [flat|nested] 2+ messages in thread
* [gcc(refs/users/aoliva/heads/testme)] [libstdc++] [testsuite] expect zero entropy matching implementation
@ 2023-06-14 19:17 Alexandre Oliva
0 siblings, 0 replies; 2+ messages in thread
From: Alexandre Oliva @ 2023-06-14 19:17 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:ee4bf43778b2b1b1a743d0ade40ba44ccf27a4ca
commit ee4bf43778b2b1b1a743d0ade40ba44ccf27a4ca
Author: Alexandre Oliva <oliva@adacore.com>
Date: Wed Jun 14 16:16:17 2023 -0300
[libstdc++] [testsuite] expect zero entropy matching implementation
random_device::get_entropy() returns 0.0 when _GLIBCXX_USE_DEV_RANDOM
is not defined, but the test expects otherwise. Adjust.
for libstdc++-v3/ChangeLog
* testsuite/26_numerics/random/random_device/entropy.cc:
Expect get_entropy to return zero when _GLIBCXX_USE_DEV_RANDOM
is not defined.
TN: W609-009
Diff:
---
.../testsuite/26_numerics/random/random_device/entropy.cc | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc b/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc
index 9f529f5d814..3e6872c8a61 100644
--- a/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc
+++ b/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc
@@ -13,7 +13,13 @@ test01()
VERIFY( std::random_device(token).entropy() == 0.0 );
using result_type = std::random_device::result_type;
+#ifdef _GLIBCXX_USE_DEV_RANDOM
const double max = std::numeric_limits<result_type>::digits;
+#else
+ // random_device::entropy() always returns 0.0 when
+ // _GLIBCXX_USE_DEV_RANDOM is not defined.
+ const double max = 0.0;
+#endif
for (auto token : { "/dev/random", "/dev/urandom" })
if (__gnu_test::random_device_available(token))
@@ -30,7 +36,7 @@ test01()
VERIFY( entropy == max );
}
- for (auto token : { "getentropy", "arc4random" })
+ for (auto token : { "getentropy", "arc4random" })
if (__gnu_test::random_device_available(token))
{
const double entropy = std::random_device(token).entropy();
^ permalink raw reply [flat|nested] 2+ messages in thread
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