[gcc r13-2999] libstdc++: Remove <sstream> dependency from std::bitset::to_ulong() test

[Jonathan Wakely <redi@gcc.gnu.org>]

https://gcc.gnu.org/g:789ddef1cf5a906802f61b2c494a86b80489f2e5

commit r13-2999-g789ddef1cf5a906802f61b2c494a86b80489f2e5
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Sep 30 15:54:19 2022 +0100

    libstdc++: Remove <sstream> dependency from std::bitset::to_ulong() test
    
    There's no need to use a stringstream to test the to_ulong() member.
    This will allow the test to be used in freestanding mode.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/20_util/bitset/access/to_ulong.cc: Construct bitset
            from binary literal instead of using stringstream.

Diff:
---
 libstdc++-v3/testsuite/20_util/bitset/access/to_ulong.cc | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/libstdc++-v3/testsuite/20_util/bitset/access/to_ulong.cc b/libstdc++-v3/testsuite/20_util/bitset/access/to_ulong.cc
index 8163701e342..edc021c209c 100644
--- a/libstdc++-v3/testsuite/20_util/bitset/access/to_ulong.cc
+++ b/libstdc++-v3/testsuite/20_util/bitset/access/to_ulong.cc
@@ -20,22 +20,11 @@
 // 23.3.5.2 bitset members
 
 #include <bitset>
-#include <stdexcept>
-#include <sstream>
 #include <testsuite_hooks.h>
 
 void test03()
 {
-  std::bitset<5>      b;
-  std::stringstream   ss("101");
-  ss.exceptions(std::ios_base::eofbit);
-
-  try
-  {
-    ss >> b;
-  }
-  catch (std::exception&) { }
-
+  std::bitset<5>      b(0b101);
   VERIFY( b.to_ulong() == 5 );
 }