Thanks Martin"lazarus" is a symbolic link to the actual directory, which is lazarus-3.2.6
Just for info:Lazarus 4.0 will be released with FPC 3.2.2 (as this is the current released version of FPC). Any issues with this FPC can not be fixed as part of Lazarus.
1) about maps.pp exceptions change to another pc, compile fixes_4 branch with fpc/release_3_2_4, none of exception raised. compared avl_tree.pas from fpc 3.2.2 and lazarus 3.8/laz_avl_tree, there is small different in TAVLTree.FreeAndClear. avl_tree(in fpc_3_2_4) is same with lazarus 3.8
So it is the same file?