From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sat, 12 Jul 2025 20:56:55 +0000 (-0700)
Subject: Remove ineffective overflow check
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=080cf96717b719d89c6675ec479a0139c658b8e8;p=emacs.git

Remove ineffective overflow check

* src/fileio.c (Finsert_file_contents): Remove check for overflow.
The overflow is not possible, and the check was incorrectly
written and would not have caught it anyway.

(cherry picked from commit e6c684797361aec99b1b9eef139bab92679355ec)
---

diff --git a/src/fileio.c b/src/fileio.c
index ae6fbb7dc7a..b639be1493b 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -4873,10 +4873,7 @@ by calling `format-decode', which see.  */)
 		break;
 	      }
 
-	    if (!integer_to_intmax (nbytes, &number)
-		&& number > PTRDIFF_MAX)
-	      buffer_overflow ();
-
+	    integer_to_intmax (nbytes, &number);
 	    this = number;
 	  }
 	else