1 files changed, 16 insertions, 0 deletions
diff --git a/test/fuzzing/hb-fuzzer.hh b/test/fuzzing/hb-fuzzer.hh
index 52e00dd0e..b7090a94a 100644
--- a/test/fuzzing/hb-fuzzer.hh
+++ b/test/fuzzing/hb-fuzzer.hh
@@ -10,9 +10,25 @@ extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size);
 #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;
+}