From 6df64d170a93970fd57932980fceed6bf1853ccb Mon Sep 17 00:00:00 2001
From: Andrea Corallo <andrea_corallo@yahoo.it>
Date: Sun, 1 Sep 2019 17:02:35 +0200
Subject: [PATCH] fix relocation emission into comp.el

---
 lisp/emacs-lisp/comp.el | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
index e9f9cd2db45..65944e5dd86 100644
--- a/lisp/emacs-lisp/comp.el
+++ b/lisp/emacs-lisp/comp.el
@@ -177,7 +177,8 @@ LIMPLE basic block.")
   "Keep track of OBJ into the ctxt relocations.
 The corresponding index is returned."
   (let ((data-relocs-idx (comp-ctxt-data-relocs-idx comp-ctxt)))
-    (unless (gethash obj data-relocs-idx)
+    (if-let ((idx (gethash obj data-relocs-idx)))
+        idx
       (push obj (comp-ctxt-data-relocs-l comp-ctxt))
       (puthash obj (hash-table-count data-relocs-idx) data-relocs-idx))))
 
@@ -185,7 +186,8 @@ The corresponding index is returned."
   "Keep track of SUBR-NAME into the ctxt relocations.
 The corresponding index is returned."
   (let ((func-relocs-idx (comp-ctxt-func-relocs-idx comp-ctxt)))
-    (unless (gethash subr-name func-relocs-idx)
+    (if-let ((idx (gethash subr-name func-relocs-idx)))
+        idx
       (push subr-name (comp-ctxt-func-relocs-l comp-ctxt))
       (puthash subr-name (hash-table-count func-relocs-idx) func-relocs-idx))))
 
@@ -392,6 +394,7 @@ If DST-N is specified use it otherwise assume it to be the current slot."
 (defun comp-emit-set-const (val)
   "Set constant VAL to current slot."
   (let ((rel-idx (comp-add-const-to-relocs val)))
+    (cl-assert (numberp rel-idx))
     (setf (comp-slot) (make-comp-mvar :slot (comp-sp)
                                       :constant val))
     (comp-emit `(setimm ,(comp-slot) ,rel-idx ,val))))
@@ -848,7 +851,9 @@ the annotation emission."
         (prin1-to-string (cl-loop with h = (comp-ctxt-funcs-h comp-ctxt)
                                   for f being each hash-value of h
                                   for args = (comp-func-args f)
-                                  for doc = (aref (comp-func-byte-func f) 4)
+                                  for doc = (when (> (length (comp-func-byte-func f))
+                                                     4)
+                                              (aref (comp-func-byte-func f) 4))
                                   collect (vector (comp-func-symbol-name f)
                                                   (comp-func-c-func-name f)
                                                   (cons (comp-args-base-min args)
-- 
2.39.5