tree bb347f6c3ff42b31f534f177ab772327d6f0b880
parent 61920b21ca0c632ba58aef95c7f65f409cc0fbd2
author Behdad Esfahbod <behdad@behdad.org> 1525769225 -0700
committer Behdad Esfahbod <behdad@behdad.org> 1525769225 -0700

Allocate user-data-array on the heap

This saves each object allocation 72 bytes.  Now object overhead is just
16 bytes (on x86) instead of 88 bytes. Neat.