[PATCH] PR libstdc++/85494 use rdseed and rand_s in std::random_device

[Jonathan Wakely]

On 31/05/19 10:46 +0100, Jonathan Wakely wrote:
>On 31/05/19 09:26 +0000, Szabolcs Nagy wrote:
>>On 29/05/2019 23:03, Jonathan Wakely wrote:
>>>This fixes a test that started to fail in mingw.
>>>
>>>Tested x86_64-linux, powerpc64le-linux and x86_64-w64-ming32.
>>>
>>>Committed to trunk.
>>
>>note that the updated test fails on baremetal
>>
>>FAIL: 26_numerics/random/random_device/cons/token.cc execution test
>>
>>26_numerics/random/random_device/cons/token.cc:67: void test03(): Assertion 'count != 0' failed.
>>
>>(if i add "default" to the token list in test03 then it passes)
>
>Hmm, then I messed something up. If the "default" token works then one
>of the others should too (I would expect that to be "mt19937" for bare
>metal).
>
>I'll take a look, thanks.


Doh:

--- a/libstdc++-v3/testsuite/26_numerics/random/random_device/cons/token.cc
+++ b/libstdc++-v3/testsuite/26_numerics/random/random_device/cons/token.cc
@@ -51,7 +51,7 @@ test03()
 {
   // At least one of these tokens should be valid.
   const std::string tokens[] = {
-    "rdseed", "rdrand", "rand_s", "/dev/urandom", "/dev/random", "mt19337"
+    "rdseed", "rdrand", "rand_s", "/dev/urandom", "/dev/random", "mt19937"
   };
   int count = 0;
   for (const std::string& token : tokens)