try to fix serialization

there's padding issues, idk how portable this is...
The CI's should be interesting.

Author: divinity76

ext/hash/php_hash_blake3.h

@@ -24,9 +24,26 @@
 
 // typedef struct blake3_hasher PHP_BLAKE3_CTX;
 #define PHP_BLAKE3_CTX blake3_hasher
-// help: is V correct?
-//#define PHP_BLAKE3_SPEC "b8b8qb64bbbbb1760"
-#define PHP_BLAKE3_SPEC "L8L8Qa64CCCCL8Ca1760"
+// When testing, the compiler insert 5 alignment-padding bytes after buf_len, and 7 trailing alignment bytes at the end of the struct.
+// Unsure if it is portable to rely on this exact padding behavior..
+// If the CIs pass, I'll assume it is portable.
+#define PHP_BLAKE3_SPEC /* uint32_t key[8]; */"l8" \
+/* uint32_t cv[8]; */ "l8" \
+/* uint64_t chunk_counter; */ "q" \
+/* uint8_t buf[BLAKE3_BLOCK_LEN];  */ "b64" \
+/* uint8_t buf_len; */ "b" \
+/* skip 5 bytes of alignment padding in chunk */ "B5" \
+/* uint8_t blocks_compressed */ "b" \
+/* uint8_t flags; */ "b" \
+/* uint8_t cv_stack_len; */ "b" \
+/* uint8_t cv_stack[(BLAKE3_MAX_DEPTH + 1) * BLAKE3_OUT_LEN]; */ "b1760" \
+/* skip 7 trailing alignment bytes */     "B7" \
+"."
+
+
+
+
+
 
 PHP_HASH_API void PHP_BLAKE3Init(PHP_BLAKE3_CTX *context, HashTable *args);
 PHP_HASH_API void PHP_BLAKE3Update(PHP_BLAKE3_CTX *context, const unsigned char *input, size_t len);

ext/hash/tests/hash_serialize_001.phpt

@@ -44,7 +44,6 @@ function not_serializable(string $algo)
     return in_array($algo, [
         "xxh3", 
         "xxh128",
-        "blake3", // todo: blake3 can be seralized but it's not implemented yet
         ], true);
 }
 
@@ -180,6 +179,9 @@ string(8) "eee74423"
 string(5) "xxh64"
 string(16) "9d6ab4708056a619"
 string(16) "9d6ab4708056a619"
+string(6) "blake3"
+string(64) "e232493e3d416e24ffc588b24a1772ccc6f80290f1920cf15f21313bc3543a51"
+string(64) "e232493e3d416e24ffc588b24a1772ccc6f80290f1920cf15f21313bc3543a51"
 string(10) "haval128,3"
 string(32) "86362472c8895e68e223ef8b3711d8d9"
 string(32) "86362472c8895e68e223ef8b3711d8d9"
@@ -354,6 +356,9 @@ string(8) "3b7a100b"
 string(5) "xxh64"
 string(16) "5a90002ef76d172f"
 string(16) "5a90002ef76d172f"
+string(6) "blake3"
+string(64) "dbdea45e5a6c3bad18a4f96d9d4b9105e4cceaa4fc06568f69829435c47587fb"
+string(64) "dbdea45e5a6c3bad18a4f96d9d4b9105e4cceaa4fc06568f69829435c47587fb"
 string(10) "haval128,3"
 string(32) "ebeeeb05c18af1e53d2d127b561d5e0d"
 string(32) "ebeeeb05c18af1e53d2d127b561d5e0d"