From 11163675818ab877f20d3740a7c3e59d565b8e9c Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sat, 6 Apr 2024 15:18:04 -0700
Subject: [PATCH] =?UTF-8?q?split:=20don=E2=80=99t=20trust=20st=5Fsize=20on?=
 =?UTF-8?q?=20/proc=20files?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

* src/split.c (create): Don’t trust st_size == 0.
---
 src/split.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/split.c b/src/split.c
index a32b2d9..862f94b 100644
--- a/src/split.c
+++ b/src/split.c
@@ -489,10 +489,8 @@ create (char const *name)
       if (SAME_INODE (in_stat_buf, out_stat_buf))
         error (EXIT_FAILURE, 0, _("%s would overwrite input; aborting"),
                quoteaf (name));
-      bool regularish
-        = S_ISREG (out_stat_buf.st_mode) || S_TYPEISSHM (&out_stat_buf);
-      if (! (regularish && out_stat_buf.st_size == 0)
-          && ftruncate (fd, 0) < 0 && regularish)
+      if (ftruncate (fd, 0) < 0
+          && (S_ISREG (out_stat_buf.st_mode) || S_TYPEISSHM (&out_stat_buf)))
         error (EXIT_FAILURE, errno, _("%s: error truncating"), quotef (name));
 
       return fd;
-- 
2.27.0

