fix unaligned memcpy in frozen serialize (#727)

Author: jwhear

CMakeLists.txt

@@ -20,8 +20,8 @@ endif()
 set(ROARING_LIB_NAME roaring)
 set(PROJECT_VERSION_MAJOR 4)
 set(PROJECT_VERSION_MINOR 3)
-set(PROJECT_VERSION_PATCH 7)
-set(ROARING_LIB_VERSION "4.3.7" CACHE STRING "Roaring library version")
+set(PROJECT_VERSION_PATCH 8)
+set(ROARING_LIB_VERSION "4.3.8" CACHE STRING "Roaring library version")
 set(ROARING_LIB_SOVERSION "18" CACHE STRING "Roaring library soversion")
 
 option(ROARING_EXCEPTIONS "Enable exception-throwing interface" ON)

doxygen

@@ -48,7 +48,7 @@ PROJECT_NAME           = "CRoaring"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = "4.3.7"
+PROJECT_NUMBER         = "4.3.8"
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

include/roaring/roaring_version.h

@@ -2,11 +2,11 @@
 // /include/roaring/roaring_version.h automatically generated by release.py, do not change by hand
 #ifndef ROARING_INCLUDE_ROARING_VERSION
 #define ROARING_INCLUDE_ROARING_VERSION
-#define ROARING_VERSION "4.3.7"
+#define ROARING_VERSION "4.3.8"
 enum {
     ROARING_VERSION_MAJOR = 4,
     ROARING_VERSION_MINOR = 3,
-    ROARING_VERSION_REVISION = 7
+    ROARING_VERSION_REVISION = 8
 };
 #endif // ROARING_INCLUDE_ROARING_VERSION
-// clang-format on
+// clang-format on

src/roaring.c

@@ -3016,7 +3016,7 @@ void roaring_bitmap_frozen_serialize(const roaring_bitmap_t *rb, char *buf) {
     uint16_t *key_zone = (uint16_t *)arena_alloc(&buf, 2 * ra->size);
     uint16_t *count_zone = (uint16_t *)arena_alloc(&buf, 2 * ra->size);
     uint8_t *typecode_zone = (uint8_t *)arena_alloc(&buf, ra->size);
-    uint32_t *header_zone = (uint32_t *)arena_alloc(&buf, 4);
+    char *header_zone = (char*)arena_alloc(&buf, 4);
 
     for (int32_t i = 0; i < ra->size; i++) {
         uint16_t count;