From: Noah Meyerhans <noahm@debian.org>
Date: Wed, 2 Sep 2026 01:12:51 +0000 (-0400)
Subject: [PATCH] lib: xxh64: fix byte ordering bug on big-endian systems
X-Git-Tag: archive/raspbian/1%2.4.1+dfsg1-6+rpi1+deb13u7^2~40
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=664ad68703a63118533d1e4150b15bf57d709f8b;p=dovecot.git

[PATCH] lib: xxh64: fix byte ordering bug on big-endian systems

Convert from little-endian to host byte order where necessary.

Background at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1146449

Gbp-Pq: Name 0001-lib-xxh64-fix-byte-ordering-bug-on-big-endian-system.patch
---

diff --git a/src/lib/xxh64.c b/src/lib/xxh64.c
index 1c17833..4a151bd 100644
--- a/src/lib/xxh64.c
+++ b/src/lib/xxh64.c
@@ -8,6 +8,8 @@
 #include "lib.h"
 #include "xxh64.h"
 
+#include <endian.h>
+
 #define XXH64_PRIME1  UINT64_C(0x9E3779B185EBCA87)
 #define XXH64_PRIME2  UINT64_C(0xC2B2AE3D27D4EB4F)
 #define XXH64_PRIME3  UINT64_C(0x165667B19E3779F9)
@@ -20,14 +22,14 @@ static inline uint64_t xxh64_read64(const void *p)
 {
 	uint64_t v;
 	memcpy(&v, p, sizeof(v));
-	return v;
+	return le64toh(v);  /* Convert from little-endian to host byte order */
 }
 
 static inline uint32_t xxh64_read32(const void *p)
 {
 	uint32_t v;
 	memcpy(&v, p, sizeof(v));
-	return v;
+	return le32toh(v);  /* Convert from little-endian to host byte order */
 }
 
 static uint64_t ATTR_UNSIGNED_WRAPS xxh64_round(uint64_t acc, uint64_t input)