From 7ef0952f856a5c5b52d8b86cc2fd51c9a16500f4 Mon Sep 17 00:00:00 2001
From: kevaundray <kevtheappdev@gmail.com>
Date: Tue, 29 Aug 2023 14:14:59 +0000
Subject: [PATCH] truncate to number of points in file and print to stderr.

---
 .../cpp/barretenberg/cpp/src/barretenberg/bb/get_crs.hpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/circuits/cpp/barretenberg/cpp/src/barretenberg/bb/get_crs.hpp b/circuits/cpp/barretenberg/cpp/src/barretenberg/bb/get_crs.hpp
index 808bb5a0f01..be827610303 100644
--- a/circuits/cpp/barretenberg/cpp/src/barretenberg/bb/get_crs.hpp
+++ b/circuits/cpp/barretenberg/cpp/src/barretenberg/bb/get_crs.hpp
@@ -62,8 +62,15 @@ inline std::vector<barretenberg::g1::affine_element> get_g1_data(const std::file
             vinfo("using cached crs at: ", path);
             auto data = read_file(path / "g1.dat");
             auto points = std::vector<barretenberg::g1::affine_element>(num_points);
+
+            auto size_of_points_in_bytes = num_points * 64;
+            if (data.size() < size_of_points_in_bytes) {
+                vinfo("data is smaller than expected!", data.size(), size_of_points_in_bytes);
+            }
+            size_t actual_buffer_size = std::min(data.size(), size_of_points_in_bytes);
+
             barretenberg::srs::IO<curve::BN254>::read_affine_elements_from_buffer(
-                points.data(), (char*)data.data(), num_points * 64);
+                points.data(), (char*)data.data(), actual_buffer_size);
             return points;
         }