[PATCH] D16360: unordered_map: Avoid unnecessary mallocs when no insert occurs

[Duncan P. N. Exon Smith via cfe-commits]

dexonsmith updated this revision to Diff 50883.
dexonsmith added a comment.

Eric sent me his preferred tests, which look fine to me.  I've applied them to this patch.


http://reviews.llvm.org/D16360

Files:
  include/__hash_table
  test/libcxx/containers/unord/unord.set/insert_dup_alloc.pass.cpp
  test/std/containers/unord/unord.map/unord.map.modifiers/insert_allocator_requirements.pass.cpp
  test/std/containers/unord/unord.map/unord.map.modifiers/insert_and_emplace_allocator_requirements.pass.cpp
  test/std/containers/unord/unord.set/insert_allocator_requirements.pass.cpp
  test/std/containers/unord/unord.set/insert_and_emplace_allocator_requirements.pass.cpp

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