From: Eric Biggers <ebiggers3@gmail.com>
Date: Thu, 20 Nov 2014 03:41:37 +0000 (-0600)
Subject: lookup_table.c: Annotate potential unaligned memory access in lookup_stream()
X-Git-Tag: v1.7.4~52
X-Git-Url: https://wimlib.net/git/?p=wimlib;a=commitdiff_plain;h=3b05052885168a50852b86609a89f29d1c0c6d97

lookup_table.c: Annotate potential unaligned memory access in lookup_stream()
---

diff --git a/include/wimlib/unaligned.h b/include/wimlib/unaligned.h
index d30c9f20..9d708065 100644
--- a/include/wimlib/unaligned.h
+++ b/include/wimlib/unaligned.h
@@ -34,5 +34,6 @@ store_##type##_unaligned(type val, void *p)			\
 DEFINE_UNALIGNED_TYPE(le16);
 DEFINE_UNALIGNED_TYPE(le32);
 DEFINE_UNALIGNED_TYPE(le64);
+DEFINE_UNALIGNED_TYPE(size_t);
 
 #endif /* _WIMLIB_UNALIGNED_H */
diff --git a/src/lookup_table.c b/src/lookup_table.c
index 8dc24109..3d2abf60 100644
--- a/src/lookup_table.c
+++ b/src/lookup_table.c
@@ -33,6 +33,7 @@
 #include "wimlib/metadata.h"
 #include "wimlib/ntfs_3g.h"
 #include "wimlib/resource.h"
+#include "wimlib/unaligned.h"
 #include "wimlib/util.h"
 #include "wimlib/write.h"
 
@@ -377,7 +378,7 @@ lookup_stream(const struct wim_lookup_table *table, const u8 hash[])
 	struct wim_lookup_table_entry *lte;
 	struct hlist_node *pos;
 
-	i = *(size_t*)hash % table->capacity;
+	i = load_size_t_unaligned(hash) % table->capacity;
 	hlist_for_each_entry(lte, pos, &table->array[i], hash_list)
 		if (hashes_equal(hash, lte->hash))
 			return lte;