vendor/llvm-project/llvmorg-10-init-17466-ge26a78e7085

1 files changed, 6 insertions, 0 deletions

diff --git a/compiler-rt/include/fuzzer/FuzzedDataProvider.h b/compiler-rt/include/fuzzer/FuzzedDataProvider.h
index fd895b767d9e..3e069eba69b4 100644
--- a/compiler-rt/include/fuzzer/FuzzedDataProvider.h
+++ b/compiler-rt/include/fuzzer/FuzzedDataProvider.h
@@ -263,6 +263,12 @@ class FuzzedDataProvider {
     // which seems to be a natural choice for other implementations as well.
     // To increase the odds even more, we also call |shrink_to_fit| below.
     std::vector<T> result(size);
+    if (size == 0) {
+      if (num_bytes_to_consume != 0)
+        abort();
+      return result;
+    }
+
     std::memcpy(result.data(), data_ptr_, num_bytes_to_consume);
     Advance(num_bytes_to_consume);