Fixing corruption issues

Dependencies

• [2] 7T2CCH3P Fixing a segfault (wrong offset in page_unsized::del)
• [3] 52X5P7ND Cleaning up the unsized part
• [4] H3FVSQIQ Unsized pages

Change contents

• edit in sanakirja-core/src/btree/page_unsized.rs at line 671
  [3.19483]

  [3.19483]
  + let mut rr = m.r;
• replacement in sanakirja-core/src/btree/page_unsized.rs at line 674
  [3.19558]→[2.86:136](∅→∅)
  − L::alloc_write(new, k, v, 0, m.l, n);
  [3.19558]

  [2.136]
  + L::alloc_write(new, k, v, l, m.l, n);
• edit in sanakirja-core/src/btree/page_unsized.rs at line 676
  [2.188]

  [3.19664]
  + } else if m.l > 0 {

  + L::alloc_write(new, k, v, m.l, m.r, n);
• replacement in sanakirja-core/src/btree/page_unsized.rs at line 679
  [3.19681]→[3.18547:18599](∅→∅)
  − L::alloc_write(new, k, v, m.l, m.r, n);
  [3.19681]

  [3.19735]
  + L::alloc_write(new, k, v, l, m.r, n);
• replacement in sanakirja-core/src/btree/page_unsized.rs at line 681
  [3.19745]→[3.19745:19758](∅→∅)
  − } else {
  [3.19745]

  [3.19758]
  + l = 0;

  + rr = 0;

  + } else if m.l > 0 {
• edit in sanakirja-core/src/btree/page_unsized.rs at line 690
  [3.18690]

  [3.18690]
  + // Here's a confusing thing: if the first element of `c1` is the

  + // last element of a page, we may be updating its right child (in

  + // which case m.r > 0) rather than its left child like for all

  + // other elements.

  + //

  + // This case only ever happens for this function when we're

  + // updating the last child of a page p, and then merging p with

  + // its right neighbour.
• replacement in sanakirja-core/src/btree/page_unsized.rs at line 699
  [3.18764]→[3.18764:18808](∅→∅)
  − L::alloc_write(new, k, v, l, r, n);
  [3.18764]

  [3.20035]
  + if rr > 0 {

  + L::alloc_write(new, k, v, l, rr, n);

  + rr = 0;

  + } else {

  + L::alloc_write(new, k, v, l, r, n);

  + }