hashindex 32 bit alignment fix

_hashindex.c.patch

diff --git a/attic/_hashindex.c b/attic/_hashindex.c
index 3d311dd..4d117f1 100644
--- a/attic/_hashindex.c
+++ b/attic/_hashindex.c
@@ -18,6 +18,9 @@
 #error Unknown byte order
 #endif
 
+/* Adjustment to make sure buckets locations are 32 bit aligned */
+#define ALIGNMENT_ADJUSTMENT 2
+
 typedef struct {
     char magic[8];
     int32_t num_entries;
@@ -27,6 +30,7 @@ typedef struct {
 } __attribute__((__packed__)) HashHeader;
 
 typedef struct {
+    void *allocated_data;
     void *data;
     void *buckets;
     int num_entries;
@@ -120,7 +124,8 @@ hashindex_resize(HashIndex *index, int capacity)
     while((key = hashindex_next_key(index, key))) {
         hashindex_set(new, key, hashindex_get(index, key));
     }
-    free(index->data);
+    free(index->allocated_data);
+    index->allocated_data = new->allocated_data;
     index->data = new->data;
     index->data_len = new->data_len;
     index->num_buckets = new->num_buckets;
@@ -177,12 +182,13 @@ hashindex_read(const char *path)
         EPRINTF_PATH(path, "malloc failed");
         goto fail;
     }
-    if(!(index->data = malloc(length))) {
+    if(!(index->allocated_data = malloc(length))) {
         EPRINTF_PATH(path, "malloc failed");
         free(index);
         index = NULL;
         goto fail;
     }
+    index->data = index->allocated_data + ALIGNMENT_ADJUSTMENT;
     if(fread(index->data, 1, length, fd) != length) {
         if(ferror(fd)) {
             EPRINTF_PATH(path, "fread failed");
@@ -190,7 +196,7 @@ hashindex_read(const char *path)
         else {
             EPRINTF_MSG_PATH(path, "failed to read %ld bytes", length);
         }
-        free(index->data);
+        free(index->allocated_data);
         free(index);
         index = NULL;
         goto fail;
@@ -226,11 +232,12 @@ hashindex_init(int capacity, int key_size, int value_size)
         return NULL;
     }
     index->data_len = sizeof(HashHeader) + (off_t)capacity * (key_size + value_size);
-    if(!(index->data = calloc(index->data_len, 1))) {
+    if(!(index->allocated_data = calloc(index->data_len, 1))) {
         EPRINTF("malloc failed");
         free(index);
         return NULL;
     }
+    index->data = index->allocated_data + ALIGNMENT_ADJUSTMENT;
     index->num_entries = 0;
     index->key_size = key_size;
     index->value_size = value_size;
@@ -249,7 +256,7 @@ hashindex_init(int capacity, int key_size, int value_size)
 static void
 hashindex_free(HashIndex *index)
 {
-    free(index->data);
+    free(index->allocated_data);
     free(index);
 }