From 49b372b938df92fbcd12e2389f75808de1457c9d Mon Sep 17 00:00:00 2001
From: Lasse Collin <lasse.collin@tukaani.org>
Date: Tue, 13 Oct 2026 19:04:47 +0300
Subject: [PATCH] xz: Silence a Clang warning on Windows

From Clang 23.1.3:

src/xz/file_io.c:108:13: error: variable 'try_sparse' set but not used [-Werror,-Wunused-but-set-global]
  108 | static bool try_sparse = true;
      |             ^
---
 src/xz/file_io.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/xz/file_io.c b/src/xz/file_io.c
index 6f784dd6..808c1d42 100644
--- a/src/xz/file_io.c
+++ b/src/xz/file_io.c
@@ -104,10 +104,10 @@ typedef enum {
 } io_wait_ret;
 
 
+#ifndef TUKLIB_DOSLIKE
 /// If true, try to create sparse files when decompressing.
 static bool try_sparse = true;
 
-#ifndef TUKLIB_DOSLIKE
 /// File status flags of standard input. This is used by io_open_src()
 /// and io_close_src().
 static int stdin_flags;
@@ -186,7 +186,9 @@ io_write_to_user_abort_pipe(void)
 extern void
 io_no_sparse(void)
 {
+#ifndef TUKLIB_DOSLIKE
 	try_sparse = false;
+#endif
 	return;
 }