| commit | 254bd40b3f63b8d1e484a5c88a2255681ea54e45 | |
| author | davidben <davidben@chromium.org> | |
| Sat, 11 Oct 2014 00:13:57 +0000 (10 17:13 -0700) | ||
| committer | Commit bot <commit-bot@chromium.org> | |
| Sat, 11 Oct 2014 00:14:14 +0000 (11 00:14 +0000) | ||
| tree | c75dfd0f1160ba33aab3cdef30fbbcca8b2bce46 | treesnapshot (tar.gz zip) |
| parent | 45097b2058e1a0d5049c9b7789a91aa9ea4f09ae | commitdiff |
Align base::hash_map with C++11, part 1.
C++11's std::hash provides a default hash for T* that hashes by pointer value.
So does MSVC's stdext::hash_value, but not GCC's __gnu_cxx::hash (and STLPort's
std::hash). To align non-MSVC with both MSVC and the standard, provide a
default hash for pointers. This removes a lot of GCC-specific hash definitions.
Confusingly, all three provide a default hash for const char * that hashes as C
string, while not changing their equality. This CL does not change this on any
platform.
BUG=420242
Review URL: https://codereview.chromium.org/630503002
Cr-Commit-Position: refs/heads/master@{#299217}
C++11's std::hash provides a default hash for T* that hashes by pointer value.
So does MSVC's stdext::hash_value, but not GCC's __gnu_cxx::hash (and STLPort's
std::hash). To align non-MSVC with both MSVC and the standard, provide a
default hash for pointers. This removes a lot of GCC-specific hash definitions.
Confusingly, all three provide a default hash for const char * that hashes as C
string, while not changing their equality. This CL does not change this on any
platform.
BUG=420242
Review URL: https://codereview.chromium.org/630503002
Cr-Commit-Position: refs/heads/master@{#299217}
16 files changed: