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-rw-r--r--src/eval.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/eval.c b/src/eval.c
index ca1eb84ff3f..40cba3bb1ce 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -282,8 +282,12 @@ call_debugger (Lisp_Object arg)
/* Do not allow max_specpdl_size less than actual depth (Bug#16603). */
EMACS_INT old_max = max (max_specpdl_size, count);
- if (lisp_eval_depth + 40 > max_lisp_eval_depth)
- max_lisp_eval_depth = lisp_eval_depth + 40;
+ /* The previous value of 40 is too small now that the debugger
+ prints using cl-prin1 instead of prin1. Printing lists nested 8
+ deep (which is the value of print-level used in the debugger)
+ currently requires 77 additional frames. See bug#31919. */
+ if (lisp_eval_depth + 100 > max_lisp_eval_depth)
+ max_lisp_eval_depth = lisp_eval_depth + 100;
/* While debugging Bug#16603, previous value of 100 was found
too small to avoid specpdl overflow in the debugger itself. */