From: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue, 31 May 2022 08:19:32 +0000 (-0700)
Subject: Be more robust if doc file is corrupted
X-Git-Tag: emacs-29.0.90~1910^2~319^2~2
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=569d4c7ad60ec84e69df02f74e0c013ff83b93c2;p=emacs.git

Be more robust if doc file is corrupted

* src/doc.c (Fsnarf_documentation): Don’t dump core on a corrupted
doc file.  Problem found by GCC 12 -Wanalyzer-null-argument.
---

diff --git a/src/doc.c b/src/doc.c
index 71e66853b08..14db3189f34 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -569,6 +569,8 @@ the same file name is found in the `doc-directory'.  */)
       if (p)
 	{
 	  end = strchr (p, '\n');
+	  if (!end)
+	    error ("DOC file invalid at position %"pI"d", pos);
 
 	  /* We used to skip files not in build_files, so that when a
 	     function was defined several times in different files