There are also SCM_RL_IMPORT, QT_IMPORT, SCM_SRFI1314_IMPORT, and
SCM_SRFI4_IMPORT, for the corresponding libraries.
+** SCM_NEWCELL and SCM_NEWCELL2 have been deprecated.
+
+Use the new functions scm_alloc_cell and scm_alloc_double_cell
+instead. The old macros had problems because with them allocation and
+initialization was separated and the GC could sometimes observe half
+initialized cells. Only careful coding by the user of SCM_NEWCELL and
+SCM_NEWCELL2 could make this safe and efficient.
+
Changes since Guile 1.4:
* Changes to the distribution
- in boot-9.scm:
remove deprecated function `feature?ยด.
+- gc.c and gc.h:
+ remove deprecated macros SCM_NEWCELL and SCM_NEWCELL2 together with
+ their support staffing scm_deprecated_newcell,
+ scm_deprecated_newcell2, scm_tc16_allocated, mark_allocated.
[TODO ends here]