fix slow hash(::SubString{<:ByteString})

Cuts the JuliaLang#8826 vocab.jl benchmark in half.
waTeim · Nov 6, 2014 · 4b4565f · 4b4565f
1 parent cd450f6
commit 4b4565f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/base/string.jl b/base/string.jl
@@ -661,7 +661,7 @@ const memhash_seed = UInt === UInt64 ? 0x71e729fd56419c81 : 0x56419c81
 
 function hash{T<:ByteString}(s::Union(T,SubString{T}), h::UInt)
     h += memhash_seed
-    ccall(memhash, UInt, (Ptr{UInt8}, Csize_t, UInt32), s, sizeof(s), h % UInt32) + h
+    ccall(memhash, UInt, (Ptr{UInt8}, Csize_t, UInt32), pointer(s), sizeof(s), h % UInt32) + h
 end
 hash(s::AbstractString, h::UInt) = hash(bytestring(s), h)