update harfbuzz to 10.1.0

libs/harfbuzz/test/fuzzing/hb-fuzzer.hh

@@ -0,0 +1,36 @@
+#include <hb-config.hh>
+
+#include <hb.h>
+#include <stddef.h>
+
+extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size);
+
+#if defined(__GNUC__) && (__GNUC__ >= 4) || (__clang__)
+#define HB_UNUSED	__attribute__((unused))
+#else
+#define HB_UNUSED
+#endif
+
+#ifdef HB_IS_IN_FUZZER
+
+/* See src/failing-alloc.c */
+extern "C" int alloc_state;
+
+#else
+
+/* Just a dummy global variable */
+static int HB_UNUSED alloc_state = 0;
+
+#endif
+
+static inline int
+_fuzzing_alloc_state (const uint8_t *data, size_t size)
+{
+  /* https://github.com/harfbuzz/harfbuzz/pull/2764#issuecomment-1172589849 */
+
+  /* In 50% of the runs, don't fail the allocator. */
+  if (size && data[size - 1] < 0x80)
+    return 0;
+
+  return size;
+}