closes bpo-38174: Update vendored expat library to 2.2.8. (GH-16346)

Fixes CVE-2019-15903. See full changelog at https://github.com/libexpat/libexpat/blob/R_2_2_8/expat/Changes.
diff --git a/Modules/expat/siphash.h b/Modules/expat/siphash.h
index 4d6786d..bfee65a 100644
--- a/Modules/expat/siphash.h
+++ b/Modules/expat/siphash.h
@@ -11,6 +11,10 @@
  * --------------------------------------------------------------------------
  * HISTORY:
  *
+ * 2019-08-03  (Sebastian Pipping)
+ *   - Mark part of sip24_valid as to be excluded from clang-format
+ *   - Re-format code using clang-format 9
+ *
  * 2018-07-08  (Anton Maklakov)
  *   - Add "fall through" markers for GCC's -Wimplicit-fallthrough
  *
@@ -94,186 +98,186 @@
 #include <stddef.h> /* size_t */
 
 #if defined(_WIN32) && defined(_MSC_VER) && (_MSC_VER < 1600)
-  /* For vs2003/7.1 up to vs2008/9.0; _MSC_VER 1600 is vs2010/10.0 */
-  typedef unsigned __int8   uint8_t;
-  typedef unsigned __int32 uint32_t;
-  typedef unsigned __int64 uint64_t;
+/* For vs2003/7.1 up to vs2008/9.0; _MSC_VER 1600 is vs2010/10.0 */
+typedef unsigned __int8 uint8_t;
+typedef unsigned __int32 uint32_t;
+typedef unsigned __int64 uint64_t;
 #else
- #include <stdint.h> /* uint64_t uint32_t uint8_t */
+#  include <stdint.h> /* uint64_t uint32_t uint8_t */
 #endif
 
-
 /*
  * Workaround to not require a C++11 compiler for using ULL suffix
  * if this code is included and compiled as C++; related GCC warning is:
  * warning: use of C++11 long long integer constant [-Wlong-long]
  */
-#define _SIP_ULL(high, low)  (((uint64_t)high << 32) | low)
+#define _SIP_ULL(high, low) (((uint64_t)high << 32) | low)
 
+#define SIP_ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b))))
 
-#define SIP_ROTL(x, b) (uint64_t)(((x) << (b)) | ( (x) >> (64 - (b))))
+#define SIP_U32TO8_LE(p, v)                                                    \
+  (p)[0] = (uint8_t)((v) >> 0);                                                \
+  (p)[1] = (uint8_t)((v) >> 8);                                                \
+  (p)[2] = (uint8_t)((v) >> 16);                                               \
+  (p)[3] = (uint8_t)((v) >> 24);
 
-#define SIP_U32TO8_LE(p, v) \
-	(p)[0] = (uint8_t)((v) >>  0); (p)[1] = (uint8_t)((v) >>  8); \
-	(p)[2] = (uint8_t)((v) >> 16); (p)[3] = (uint8_t)((v) >> 24);
+#define SIP_U64TO8_LE(p, v)                                                    \
+  SIP_U32TO8_LE((p) + 0, (uint32_t)((v) >> 0));                                \
+  SIP_U32TO8_LE((p) + 4, (uint32_t)((v) >> 32));
 
-#define SIP_U64TO8_LE(p, v) \
-	SIP_U32TO8_LE((p) + 0, (uint32_t)((v) >>  0)); \
-	SIP_U32TO8_LE((p) + 4, (uint32_t)((v) >> 32));
+#define SIP_U8TO64_LE(p)                                                       \
+  (((uint64_t)((p)[0]) << 0) | ((uint64_t)((p)[1]) << 8)                       \
+   | ((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24)                   \
+   | ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40)                   \
+   | ((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56))
 
-#define SIP_U8TO64_LE(p) \
-	(((uint64_t)((p)[0]) <<  0) | \
-	 ((uint64_t)((p)[1]) <<  8) | \
-	 ((uint64_t)((p)[2]) << 16) | \
-	 ((uint64_t)((p)[3]) << 24) | \
-	 ((uint64_t)((p)[4]) << 32) | \
-	 ((uint64_t)((p)[5]) << 40) | \
-	 ((uint64_t)((p)[6]) << 48) | \
-	 ((uint64_t)((p)[7]) << 56))
-
-
-#define SIPHASH_INITIALIZER { 0, 0, 0, 0, { 0 }, 0, 0 }
+#define SIPHASH_INITIALIZER                                                    \
+  { 0, 0, 0, 0, {0}, 0, 0 }
 
 struct siphash {
-	uint64_t v0, v1, v2, v3;
+  uint64_t v0, v1, v2, v3;
 
-	unsigned char buf[8], *p;
-	uint64_t c;
+  unsigned char buf[8], *p;
+  uint64_t c;
 }; /* struct siphash */
 
-
 #define SIP_KEYLEN 16
 
 struct sipkey {
-	uint64_t k[2];
+  uint64_t k[2];
 }; /* struct sipkey */
 
-#define sip_keyof(k) sip_tokey(&(struct sipkey){ { 0 } }, (k))
+#define sip_keyof(k) sip_tokey(&(struct sipkey){{0}}, (k))
 
-static struct sipkey *sip_tokey(struct sipkey *key, const void *src) {
-	key->k[0] = SIP_U8TO64_LE((const unsigned char *)src);
-	key->k[1] = SIP_U8TO64_LE((const unsigned char *)src + 8);
-	return key;
+static struct sipkey *
+sip_tokey(struct sipkey *key, const void *src) {
+  key->k[0] = SIP_U8TO64_LE((const unsigned char *)src);
+  key->k[1] = SIP_U8TO64_LE((const unsigned char *)src + 8);
+  return key;
 } /* sip_tokey() */
 
-
 #ifdef SIPHASH_TOBIN
 
-#define sip_binof(v) sip_tobin((unsigned char[8]){ 0 }, (v))
+#  define sip_binof(v) sip_tobin((unsigned char[8]){0}, (v))
 
-static void *sip_tobin(void *dst, uint64_t u64) {
-	SIP_U64TO8_LE((unsigned char *)dst, u64);
-	return dst;
+static void *
+sip_tobin(void *dst, uint64_t u64) {
+  SIP_U64TO8_LE((unsigned char *)dst, u64);
+  return dst;
 } /* sip_tobin() */
 
-#endif  /* SIPHASH_TOBIN */
+#endif /* SIPHASH_TOBIN */
 
+static void
+sip_round(struct siphash *H, const int rounds) {
+  int i;
 
-static void sip_round(struct siphash *H, const int rounds) {
-	int i;
+  for (i = 0; i < rounds; i++) {
+    H->v0 += H->v1;
+    H->v1 = SIP_ROTL(H->v1, 13);
+    H->v1 ^= H->v0;
+    H->v0 = SIP_ROTL(H->v0, 32);
 
-	for (i = 0; i < rounds; i++) {
-		H->v0 += H->v1;
-		H->v1 = SIP_ROTL(H->v1, 13);
-		H->v1 ^= H->v0;
-		H->v0 = SIP_ROTL(H->v0, 32);
+    H->v2 += H->v3;
+    H->v3 = SIP_ROTL(H->v3, 16);
+    H->v3 ^= H->v2;
 
-		H->v2 += H->v3;
-		H->v3 = SIP_ROTL(H->v3, 16);
-		H->v3 ^= H->v2;
+    H->v0 += H->v3;
+    H->v3 = SIP_ROTL(H->v3, 21);
+    H->v3 ^= H->v0;
 
-		H->v0 += H->v3;
-		H->v3 = SIP_ROTL(H->v3, 21);
-		H->v3 ^= H->v0;
-
-		H->v2 += H->v1;
-		H->v1 = SIP_ROTL(H->v1, 17);
-		H->v1 ^= H->v2;
-		H->v2 = SIP_ROTL(H->v2, 32);
-	}
+    H->v2 += H->v1;
+    H->v1 = SIP_ROTL(H->v1, 17);
+    H->v1 ^= H->v2;
+    H->v2 = SIP_ROTL(H->v2, 32);
+  }
 } /* sip_round() */
 
+static struct siphash *
+sip24_init(struct siphash *H, const struct sipkey *key) {
+  H->v0 = _SIP_ULL(0x736f6d65U, 0x70736575U) ^ key->k[0];
+  H->v1 = _SIP_ULL(0x646f7261U, 0x6e646f6dU) ^ key->k[1];
+  H->v2 = _SIP_ULL(0x6c796765U, 0x6e657261U) ^ key->k[0];
+  H->v3 = _SIP_ULL(0x74656462U, 0x79746573U) ^ key->k[1];
 
-static struct siphash *sip24_init(struct siphash *H,
-		const struct sipkey *key) {
-	H->v0 = _SIP_ULL(0x736f6d65U, 0x70736575U) ^ key->k[0];
-	H->v1 = _SIP_ULL(0x646f7261U, 0x6e646f6dU) ^ key->k[1];
-	H->v2 = _SIP_ULL(0x6c796765U, 0x6e657261U) ^ key->k[0];
-	H->v3 = _SIP_ULL(0x74656462U, 0x79746573U) ^ key->k[1];
+  H->p = H->buf;
+  H->c = 0;
 
-	H->p = H->buf;
-	H->c = 0;
-
-	return H;
+  return H;
 } /* sip24_init() */
 
+#define sip_endof(a) (&(a)[sizeof(a) / sizeof *(a)])
 
-#define sip_endof(a) (&(a)[sizeof (a) / sizeof *(a)])
+static struct siphash *
+sip24_update(struct siphash *H, const void *src, size_t len) {
+  const unsigned char *p = (const unsigned char *)src, *pe = p + len;
+  uint64_t m;
 
-static struct siphash *sip24_update(struct siphash *H, const void *src,
-		size_t len) {
-	const unsigned char *p = (const unsigned char *)src, *pe = p + len;
-	uint64_t m;
+  do {
+    while (p < pe && H->p < sip_endof(H->buf))
+      *H->p++ = *p++;
 
-	do {
-		while (p < pe && H->p < sip_endof(H->buf))
-			*H->p++ = *p++;
+    if (H->p < sip_endof(H->buf))
+      break;
 
-		if (H->p < sip_endof(H->buf))
-			break;
+    m = SIP_U8TO64_LE(H->buf);
+    H->v3 ^= m;
+    sip_round(H, 2);
+    H->v0 ^= m;
 
-		m = SIP_U8TO64_LE(H->buf);
-		H->v3 ^= m;
-		sip_round(H, 2);
-		H->v0 ^= m;
+    H->p = H->buf;
+    H->c += 8;
+  } while (p < pe);
 
-		H->p = H->buf;
-		H->c += 8;
-	} while (p < pe);
-
-	return H;
+  return H;
 } /* sip24_update() */
 
+static uint64_t
+sip24_final(struct siphash *H) {
+  const char left = (char)(H->p - H->buf);
+  uint64_t b = (H->c + left) << 56;
 
-static uint64_t sip24_final(struct siphash *H) {
-	const char left = (char)(H->p - H->buf);
-	uint64_t b = (H->c + left) << 56;
+  switch (left) {
+  case 7:
+    b |= (uint64_t)H->buf[6] << 48;
+    /* fall through */
+  case 6:
+    b |= (uint64_t)H->buf[5] << 40;
+    /* fall through */
+  case 5:
+    b |= (uint64_t)H->buf[4] << 32;
+    /* fall through */
+  case 4:
+    b |= (uint64_t)H->buf[3] << 24;
+    /* fall through */
+  case 3:
+    b |= (uint64_t)H->buf[2] << 16;
+    /* fall through */
+  case 2:
+    b |= (uint64_t)H->buf[1] << 8;
+    /* fall through */
+  case 1:
+    b |= (uint64_t)H->buf[0] << 0;
+    /* fall through */
+  case 0:
+    break;
+  }
 
-	switch (left) {
-	case 7: b |= (uint64_t)H->buf[6] << 48;
-		/* fall through */
-	case 6: b |= (uint64_t)H->buf[5] << 40;
-		/* fall through */
-	case 5: b |= (uint64_t)H->buf[4] << 32;
-		/* fall through */
-	case 4: b |= (uint64_t)H->buf[3] << 24;
-		/* fall through */
-	case 3: b |= (uint64_t)H->buf[2] << 16;
-		/* fall through */
-	case 2: b |= (uint64_t)H->buf[1] << 8;
-		/* fall through */
-	case 1: b |= (uint64_t)H->buf[0] << 0;
-		/* fall through */
-	case 0: break;
-	}
+  H->v3 ^= b;
+  sip_round(H, 2);
+  H->v0 ^= b;
+  H->v2 ^= 0xff;
+  sip_round(H, 4);
 
-	H->v3 ^= b;
-	sip_round(H, 2);
-	H->v0 ^= b;
-	H->v2 ^= 0xff;
-	sip_round(H, 4);
-
-	return H->v0 ^ H->v1 ^ H->v2  ^ H->v3;
+  return H->v0 ^ H->v1 ^ H->v2 ^ H->v3;
 } /* sip24_final() */
 
-
-static uint64_t siphash24(const void *src, size_t len,
-		const struct sipkey *key) {
-	struct siphash state = SIPHASH_INITIALIZER;
-	return sip24_final(sip24_update(sip24_init(&state, key), src, len));
+static uint64_t
+siphash24(const void *src, size_t len, const struct sipkey *key) {
+  struct siphash state = SIPHASH_INITIALIZER;
+  return sip24_final(sip24_update(sip24_init(&state, key), src, len));
 } /* siphash24() */
 
-
 /*
  * SipHash-2-4 output with
  * k = 00 01 02 ...
@@ -285,107 +289,110 @@
  * ...
  * in = 00 01 02 ... 3e (63 bytes)
  */
-static int sip24_valid(void) {
-	static const unsigned char vectors[64][8] = {
-		{ 0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72, },
-		{ 0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74, },
-		{ 0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d, },
-		{ 0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85, },
-		{ 0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf, },
-		{ 0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18, },
-		{ 0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb, },
-		{ 0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab, },
-		{ 0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93, },
-		{ 0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e, },
-		{ 0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a, },
-		{ 0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4, },
-		{ 0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75, },
-		{ 0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14, },
-		{ 0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7, },
-		{ 0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1, },
-		{ 0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f, },
-		{ 0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69, },
-		{ 0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b, },
-		{ 0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb, },
-		{ 0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe, },
-		{ 0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0, },
-		{ 0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93, },
-		{ 0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8, },
-		{ 0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8, },
-		{ 0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc, },
-		{ 0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17, },
-		{ 0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f, },
-		{ 0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde, },
-		{ 0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6, },
-		{ 0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad, },
-		{ 0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32, },
-		{ 0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71, },
-		{ 0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7, },
-		{ 0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12, },
-		{ 0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15, },
-		{ 0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31, },
-		{ 0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02, },
-		{ 0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca, },
-		{ 0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a, },
-		{ 0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e, },
-		{ 0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad, },
-		{ 0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18, },
-		{ 0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4, },
-		{ 0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9, },
-		{ 0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9, },
-		{ 0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb, },
-		{ 0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0, },
-		{ 0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6, },
-		{ 0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7, },
-		{ 0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee, },
-		{ 0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1, },
-		{ 0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a, },
-		{ 0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81, },
-		{ 0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f, },
-		{ 0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24, },
-		{ 0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7, },
-		{ 0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea, },
-		{ 0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60, },
-		{ 0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66, },
-		{ 0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c, },
-		{ 0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f, },
-		{ 0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5, },
-		{ 0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95, }
-	};
-	unsigned char in[64];
-	struct sipkey k;
-	size_t i;
+static int
+sip24_valid(void) {
+  /* clang-format off */
+  static const unsigned char vectors[64][8] = {
+    { 0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72, },
+    { 0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74, },
+    { 0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d, },
+    { 0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85, },
+    { 0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf, },
+    { 0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18, },
+    { 0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb, },
+    { 0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab, },
+    { 0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93, },
+    { 0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e, },
+    { 0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a, },
+    { 0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4, },
+    { 0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75, },
+    { 0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14, },
+    { 0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7, },
+    { 0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1, },
+    { 0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f, },
+    { 0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69, },
+    { 0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b, },
+    { 0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb, },
+    { 0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe, },
+    { 0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0, },
+    { 0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93, },
+    { 0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8, },
+    { 0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8, },
+    { 0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc, },
+    { 0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17, },
+    { 0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f, },
+    { 0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde, },
+    { 0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6, },
+    { 0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad, },
+    { 0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32, },
+    { 0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71, },
+    { 0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7, },
+    { 0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12, },
+    { 0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15, },
+    { 0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31, },
+    { 0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02, },
+    { 0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca, },
+    { 0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a, },
+    { 0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e, },
+    { 0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad, },
+    { 0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18, },
+    { 0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4, },
+    { 0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9, },
+    { 0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9, },
+    { 0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb, },
+    { 0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0, },
+    { 0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6, },
+    { 0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7, },
+    { 0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee, },
+    { 0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1, },
+    { 0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a, },
+    { 0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81, },
+    { 0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f, },
+    { 0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24, },
+    { 0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7, },
+    { 0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea, },
+    { 0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60, },
+    { 0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66, },
+    { 0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c, },
+    { 0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f, },
+    { 0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5, },
+    { 0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95, }
+  };
+  /* clang-format on */
 
-	sip_tokey(&k, "\000\001\002\003\004\005\006\007\010\011"
-			"\012\013\014\015\016\017");
+  unsigned char in[64];
+  struct sipkey k;
+  size_t i;
 
-	for (i = 0; i < sizeof in; ++i) {
-		in[i] = (unsigned char)i;
+  sip_tokey(&k, "\000\001\002\003\004\005\006\007\010\011"
+                "\012\013\014\015\016\017");
 
-		if (siphash24(in, i, &k) != SIP_U8TO64_LE(vectors[i]))
-			return 0;
-	}
+  for (i = 0; i < sizeof in; ++i) {
+    in[i] = (unsigned char)i;
 
-	return 1;
+    if (siphash24(in, i, &k) != SIP_U8TO64_LE(vectors[i]))
+      return 0;
+  }
+
+  return 1;
 } /* sip24_valid() */
 
-
 #ifdef SIPHASH_MAIN
 
-#include <stdio.h>
+#  include <stdio.h>
 
-int main(void) {
-	const int ok = sip24_valid();
+int
+main(void) {
+  const int ok = sip24_valid();
 
-	if (ok)
-		puts("OK");
-	else
-		puts("FAIL");
+  if (ok)
+    puts("OK");
+  else
+    puts("FAIL");
 
-	return !ok;
+  return ! ok;
 } /* main() */
 
 #endif /* SIPHASH_MAIN */
 
-
 #endif /* SIPHASH_H */