Make sure to align pointers in alloc_layout_slow
#45
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We didn't used to need to align pointers in `alloc_layout_slow` when we were bumping upwards, since we made sure that the chunk itself had the proper alignment, and we were using the start of the chunk for this allocation. Now that we are bumping downwards, we need to round down to the proper alignment. Fixes #43
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We didn't used to need to align pointers in
alloc_layout_slowwhen we were bumping upwards, since we made sure that the chunk itself had the proper alignment, and we were using the start of the chunk for this allocation. Now that we are bumping downwards, we need to round down to the proper alignment.Fixes #43
cc @TethysSvensson