ref: 21193eaf9308ace41004a19180ff382ec6e8754b
parent: b3d4a4197954c21ac78b68c58dff8f84fe743ea2
author: Ben Harris <bjh21@bjh21.me.uk>
date: Thu Jan 12 15:55:56 EST 2023
Palisade: forbid moves that remove grid edges Without this check, a corrupt save file can include a move that removes an edge of the grid, and then is_solved() walks off the edge of the grid causing a buffer over- or under-run. To demonstrate the bug, load this save file in a build with AddressSanitizer: SAVEFILE:41:Simon Tatham's Portable Puzzle Collection VERSION :1:1 GAME :8:Palisade PARAMS :5:5x5n5 CPARAMS :5:5x5n5 DESC :0: NSTATES :1:2 STATEPOS:1:2 MOVE :6:F0,0,1