From e4189ddfd1259adf164dd506a1ff896598151c29 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Gr=C3=B6ber?= <dxld@darkboxed.org>
Date: Sun, 27 Aug 2023 15:01:27 +0200
Subject: [PATCH] Fix fstGetUint32 crash on mips64el due to misaligned access

See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1025307
---
 libs/fst/fstapi.cc | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/libs/fst/fstapi.cc b/libs/fst/fstapi.cc
index da0d959a0..ac1a0afa3 100644
--- a/libs/fst/fstapi.cc
+++ b/libs/fst/fstapi.cc
@@ -348,17 +348,17 @@ static void *fstMmap2(size_t __len, int __fd, fst_off_t __off)
 #ifdef FST_DO_MISALIGNED_OPS
 #define fstGetUint32(x) (*(uint32_t *)(x))
 #else
-static uint32_t fstGetUint32(unsigned char *mem)
+static inline uint32_t fstGetUint32(unsigned char *mem)
 {
-    uint32_t u32;
-    unsigned char *buf = (unsigned char *)(&u32);
+    union {
+            uint8_t u8[sizeof(uint32_t)];
+            uint32_t u32;
+    } u;
 
-    buf[0] = mem[0];
-    buf[1] = mem[1];
-    buf[2] = mem[2];
-    buf[3] = mem[3];
+    for (size_t i=0; i < sizeof(u.u8); i++)
+            u.u8[i] = mem[i];
 
-    return (*(uint32_t *)buf);
+    return u.u32;
 }
 #endif