Raise default max-specpdl-size value

Occasionally, loading cl-generic.el from source requires
max_specpdl_size > 1600 when bootstrapping, and thus fails.
In any case we are very close to the limit.

* src/eval.c (init_eval_once): Raise max_specpdl_size to 1800.
* doc/lispref/variables.texi (Local Variables): Update docs.

2 files changed, 2 insertions, 2 deletions

diff --git a/doc/lispref/variables.texi b/doc/lispref/variables.texi
index 1ec97e2f3de..568eb0f7836 100644
--- a/doc/lispref/variables.texi
+++ b/doc/lispref/variables.texi
@@ -322,7 +322,7 @@ that Lisp avoids infinite recursion on an ill-defined function.
 @code{max-lisp-eval-depth} provides another limit on depth of nesting.
 @xref{Definition of max-lisp-eval-depth,, Eval}.
 
-The default value is 1600.  Entry to the Lisp debugger increases the
+The default value is 1800.  Entry to the Lisp debugger increases the
 value, if there is little room left, to make sure the debugger itself
 has room to execute.
 @end defopt
diff --git a/src/eval.c b/src/eval.c
index 4559a0e1f66..d1f74751446 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -219,7 +219,7 @@ void
 init_eval_once (void)
 {
   /* Don't forget to update docs (lispref node "Local Variables").  */
-  max_specpdl_size = 1600; /* 1500 is not enough for cl-generic.el.  */
+  max_specpdl_size = 1800; /* 1600 is not enough for cl-generic.el.  */
   max_lisp_eval_depth = 800;
   Vrun_hooks = Qnil;
   pdumper_do_now_and_after_load (init_eval_once_for_pdumper);