Commit 3aa9b35f authored by Committed by Marge Bot
Zero any slop after compaction in compacting GC
In copying GC, with the relevant debug flags enabled, we release the old blocks after a GC, and the block allocator zeroes the space before releasing a block. This effectively zeros the old heap. In compacting GC we reuse the blocks and previously we didn't zero the unused space in a compacting generation after compaction. With this patch we zero the slop between the free pointer and the end of the block when we're done with compaction and when switching to a new block (because the current block doesn't have enough space for the next object we're shifting).