Attempting to call rehash produces a link error:
std::tr1::unordered_set< int > s;
s.rehash(42);
// undefined reference to `std::tr1::hashtable<int, int, std::allocator<int>,
// Internal::identity<int>, std::equal_to<int>, std::tr1::hash<int>,
// Internal::mod_range_hashing, Internal::default_ranged_hash,
// Internal::prime_rehash_policy, false, true, true>::rehash(unsigned int)'
--
Summary: tr1/hashtable: rehash not implemented
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zak at transversal dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26132
