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-rw-r--r--libstdc++-v3/testsuite/23_containers/unordered_set/max_load_factor/robustness.cc34
1 files changed, 20 insertions, 14 deletions
diff --git a/libstdc++-v3/testsuite/23_containers/unordered_set/max_load_factor/robustness.cc b/libstdc++-v3/testsuite/23_containers/unordered_set/max_load_factor/robustness.cc
index a72829e0d43..59782286e22 100644
--- a/libstdc++-v3/testsuite/23_containers/unordered_set/max_load_factor/robustness.cc
+++ b/libstdc++-v3/testsuite/23_containers/unordered_set/max_load_factor/robustness.cc
@@ -32,41 +32,47 @@ void test01()
int val = 0;
for (; val != 100; ++val)
{
- VERIFY( us.insert(val).second) ;
+ VERIFY( us.insert(val).second );
VERIFY( us.load_factor() <= us.max_load_factor() );
}
float cur_max_load_factor = us.max_load_factor();
int counter = 0;
std::size_t thrown_exceptions = 0;
+
+ // Reduce max load factor.
+ us.max_load_factor(us.max_load_factor() / 2);
+
+ // At this point load factor is higher than max_load_factor because we can't
+ // rehash in max_load_factor call.
+ VERIFY( us.load_factor() > us.max_load_factor() );
+
while (true)
{
__gnu_cxx::limit_condition::set_limit(counter++);
bool do_break = false;
try
{
- us.max_load_factor(.5f);
+ size_t nbkts = us.bucket_count();
+ // Check that unordered_set will still be correctly resized when
+ // needed.
+ VERIFY( us.insert(val++).second );
+
+ VERIFY( us.bucket_count() != nbkts );
+ VERIFY( us.load_factor() <= us.max_load_factor() );
do_break = true;
}
catch (const __gnu_cxx::forced_error&)
{
- VERIFY( us.max_load_factor() == cur_max_load_factor );
+ // max load factor doesn't change.
+ VERIFY( us.max_load_factor() == .5f );
++thrown_exceptions;
}
- // Lets check that unordered_set will still be correctly resized
- // when needed
- __gnu_cxx::limit_condition::set_limit(nl_size_t::max());
- for (;;)
- {
- VERIFY( us.load_factor() <= us.max_load_factor() );
- size_t nbkts = us.bucket_count();
- VERIFY( us.insert(val++).second );
- if (us.bucket_count() != nbkts)
- break;
- }
+
if (do_break)
break;
}
+
VERIFY( thrown_exceptions > 0 );
}