From a2424312c451c6ad31dc62ae04926c8e99ccdc96 Mon Sep 17 00:00:00 2001
From: Alan Somers <asomers@gmail.com>
Date: Tue, 9 Sep 2025 09:56:43 -0600
Subject: [PATCH] Fix the build on 32-bit FreeBSD with GCC

GCC complains about casting a 64-bit integer to a 32-bit pointer.
Originally committed downstream as
https://github.com/freebsd/freebsd-src/commit/2d76470b701

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by:	Alan Somers <asomers@gmail.com>
Sponsored by:	ConnectWise
Closes #17706
---
 include/sys/zio.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/sys/zio.h b/include/sys/zio.h
index 211a7d0b0..a8acb83b4 100644
--- a/include/sys/zio.h
+++ b/include/sys/zio.h
@@ -82,7 +82,8 @@ gbh_nblkptrs(uint64_t size) {
 static inline zio_eck_t *
 gbh_eck(zio_gbh_phys_t *gbh, uint64_t size) {
 	ASSERT(IS_P2ALIGNED(size, sizeof (blkptr_t)));
-	return ((zio_eck_t *)((uintptr_t)gbh + size - sizeof (zio_eck_t)));
+	return ((zio_eck_t *)((uintptr_t)gbh + (size_t)size -
+	    sizeof (zio_eck_t)));
 }
 
 static inline blkptr_t *