diff options
Diffstat (limited to 'src/itree.h')
| -rw-r--r-- | src/itree.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/itree.h b/src/itree.h index 8d33ef223b5..b0f7a1d193b 100644 --- a/src/itree.h +++ b/src/itree.h @@ -149,7 +149,8 @@ struct interval_node *itree_iterator_next (struct itree_iterator *); it is cheap a pure. - Only a single iteration can happen at a time, so make sure none of the code within the loop can start another tree iteration, i.e. it shouldn't - be able to run ELisp code (or GC for that matter). + be able to run ELisp code, nor GC since GC can run ELisp by way + of `post-gc-hook`. - If you need to exit the loop early, you *have* to call `ITREE_ABORT` just before exiting (e.g. with `break` or `return`). - Non-local exits are not supported within the body of the loop. |