From: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue, 12 Oct 2021 18:54:32 +0000 (-0700)
Subject: Pacify GCC 11 -fanalyzer on x86-64
X-Git-Tag: emacs-28.0.90~306
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=ebeaa54f1986b6414c6af60660dc6bd53cbf3bf9;p=emacs.git

Pacify GCC 11 -fanalyzer on x86-64

* src/buffer.c (fix_overlays_before):
Redo slightly to work around GCC bug 102692
<https://gcc.gnu.org/bugzilla//show_bug.cgi?id=102692>.
---

diff --git a/src/buffer.c b/src/buffer.c
index f405bcb5834..eca2843e2bc 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -3843,7 +3843,9 @@ fix_overlays_before (struct buffer *bp, ptrdiff_t prev, ptrdiff_t pos)
      or the found one ends before PREV,
      or the found one is the last one in the list,
      we don't have to fix anything.  */
-  if (!tail || end < prev || !tail->next)
+  if (!tail)
+    return;
+  if (end < prev || !tail->next)
     return;
 
   right_pair = parent;