From c054fbc11e9beca0d45285c3e1f448c81416c5ce Mon Sep 17 00:00:00 2001
From: Timo Teräs <timo.teras@iki.fi>
Date: Fri, 21 Feb 2020 09:31:21 +0200
Subject: db: fix unaligned memory access in csum_hash()

---
 src/apk_defines.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/apk_defines.h')

diff --git a/src/apk_defines.h b/src/apk_defines.h
index 5373725..00e9ea8 100644
--- a/src/apk_defines.h
+++ b/src/apk_defines.h
@@ -149,6 +149,16 @@ static inline size_t mulmod(size_t a, size_t b, size_t c)
 	return (size_t) tmp;
 }
 
+static inline uint32_t get_unaligned32(const void *ptr)
+{
+#if defined(__x86_64__) || defined(__i386__)
+	return *(const uint32_t *)ptr;
+#else
+	const uint8_t *p = ptr;
+	return p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24;
+#endif
+}
+
 typedef void (*apk_progress_cb)(void *cb_ctx, size_t);
 
 void *apk_array_resize(void *array, size_t new_size, size_t elem_size);
-- 
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