Fix segmentation fault on 32-bit ARM #22
Merged
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Fix segmentation fault on 32-bit ARM by moving atomic uint64 to be the first field in ManyToOne.
writeIndex is written to atomically, which means it must be 64-bit aligned on 32-bit 386 and ARM platforms. When the buffer slice is above it, it becomes unaligned and segfaults on the call to atomic.AddUint64().
See golang/go#23345