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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-algs.hh28
1 files changed, 22 insertions, 6 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-algs.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-algs.hh
index c40a55cd1fa..05b4df52f15 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-algs.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-algs.hh
@@ -150,10 +150,26 @@ struct BEInt<Type, 4>
uint8_t ((V >> 16) & 0xFF),
uint8_t ((V >> 8) & 0xFF),
uint8_t ((V ) & 0xFF)} {}
- constexpr operator Type () const { return (v[0] << 24)
- + (v[1] << 16)
- + (v[2] << 8)
- + (v[3] ); }
+
+ struct __attribute__((packed)) packed_uint32_t { uint32_t v; };
+ constexpr operator Type () const {
+#if ((defined(__GNUC__) && __GNUC__ >= 5) || defined(__clang__)) && \
+ defined(__BYTE_ORDER) && \
+ (__BYTE_ORDER == __LITTLE_ENDIAN || __BYTE_ORDER == __BIG_ENDIAN)
+ /* Spoon-feed the compiler a big-endian integer with alignment 1.
+ * https://github.com/harfbuzz/harfbuzz/pull/1398 */
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ return __builtin_bswap32 (((packed_uint32_t *) this)->v);
+#else /* __BYTE_ORDER == __BIG_ENDIAN */
+ return ((packed_uint32_t *) this)->v;
+#endif
+#else
+ return (v[0] << 24)
+ + (v[1] << 16)
+ + (v[2] << 8)
+ + (v[3] );
+#endif
+ }
private: uint8_t v[4];
};
@@ -213,11 +229,11 @@ HB_FUNCOBJ (hb_bool);
template <typename T>
static inline
-T hb_coerce (const T v) { return v; }
+constexpr T hb_coerce (const T v) { return v; }
template <typename T, typename V,
hb_enable_if (!hb_is_same (hb_decay<T>, hb_decay<V>) && std::is_pointer<V>::value)>
static inline
-T hb_coerce (const V v) { return *v; }
+constexpr T hb_coerce (const V v) { return *v; }
struct
{