From 65e97f4826a57bb8fad05e1725e58de4acc88e89 Mon Sep 17 00:00:00 2001
From: fhgffy <102001626+fhgffy@users.noreply.github.com>
Date: Mon, 5 Oct 2026 00:24:36 +0800
Subject: [PATCH] lzmainfo: Open named files in binary mode

On native Windows, lzmainfo opened named .lzma files in text mode while
stdin was already binary. The C runtime treats 0x1A as EOF and translates
CRLF in the 13-byte header. A valid file with a known uncompressed size
of 26 bytes failed with "File is too small to be a .lzma file"; a known
size of 2573 bytes was incorrectly reported as 10 bytes. Reading the same
files through stdin or - reported the correct sizes.

Closes: https://github.com/tukaani-project/xz/pull/253
---
 src/lzmainfo/lzmainfo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lzmainfo/lzmainfo.c b/src/lzmainfo/lzmainfo.c
index 0b0b0d3d..6d5f234d 100644
--- a/src/lzmainfo/lzmainfo.c
+++ b/src/lzmainfo/lzmainfo.c
@@ -219,7 +219,7 @@ main(int argc, char **argv)
 				if (lzmainfo("(stdin)", stdin))
 					ret = EXIT_FAILURE;
 			} else {
-				FILE *f = fopen(argv[optind], "r");
+				FILE *f = fopen(argv[optind], "rb");
 				if (f == NULL) {
 					ret = EXIT_FAILURE;
 					fprintf(stderr, "%s: %s: %s\n",