git: ff99541a14d7 - stable/13 - MFC: hexdump: Do not trust st_size if it equals zero.

The branch stable/13 has been updated by delphij:

URL: https://cgit.FreeBSD.org/src/commit/?id=ff99541a14d7b8cf85e93774e939efde38a469b9

commit ff99541a14d7b8cf85e93774e939efde38a469b9
Author:     Ricardo Branco <rbranco@suse.de>
AuthorDate: 2024-01-03 20:17:58 +0000
Commit:     Xin LI <delphij@FreeBSD.org>
CommitDate: 2024-12-22 07:49:50 +0000

    MFC: hexdump: Do not trust st_size if it equals zero.
    
    PR:             bin/276106
    
    (cherry picked from commit e23954bd42fe4331b67ba8f6446bcccf751096f1)
---
 usr.bin/hexdump/display.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/usr.bin/hexdump/display.c b/usr.bin/hexdump/display.c
index bdcb4ed28170..079c14e8f823 100644
--- a/usr.bin/hexdump/display.c
+++ b/usr.bin/hexdump/display.c
@@ -393,13 +393,14 @@ doskip(const char *fname, int statok)
 	if (statok) {
 		if (fstat(fileno(stdin), &sb))
 			err(1, "%s", fname);
-		if (S_ISREG(sb.st_mode) && skip > sb.st_size) {
+		if (S_ISREG(sb.st_mode) && skip > sb.st_size && sb.st_size > 0) {
 			address += sb.st_size;
 			skip -= sb.st_size;
 			return;
 		}
 	}
-	if (!statok || S_ISFIFO(sb.st_mode) || S_ISSOCK(sb.st_mode)) {
+	if (!statok || S_ISFIFO(sb.st_mode) || S_ISSOCK(sb.st_mode) || \
+	    (S_ISREG(sb.st_mode) && sb.st_size == 0)) {
 		noseek();
 		return;
 	}