From 4bc043cd8a2fc211b756d3e9c675c984e33f785d Mon Sep 17 00:00:00 2001
From: Vesselin Velichkov <vesselin@lancre>
Date: Tue, 13 Sep 2022 08:49:02 +0100
Subject: [PATCH] plonk: replaced challenge_str map with a vector. addresses
 https://github.com/clearmatics/libsnark/pull/61#discussion_r968600750 .

---
 .../tests/bls12_381_test_vector_transcript_hasher.cpp    | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/libsnark/zk_proof_systems/plonk/tests/bls12_381_test_vector_transcript_hasher.cpp b/libsnark/zk_proof_systems/plonk/tests/bls12_381_test_vector_transcript_hasher.cpp
index 043d1bd05..8e3deae8b 100644
--- a/libsnark/zk_proof_systems/plonk/tests/bls12_381_test_vector_transcript_hasher.cpp
+++ b/libsnark/zk_proof_systems/plonk/tests/bls12_381_test_vector_transcript_hasher.cpp
@@ -123,13 +123,8 @@ libff::Fr<libff::bls12_381_pp> bls12_381_test_vector_transcript_hasher::
 
     // map the index length=0,1...5 to the challenge string=beta,
     // gamma, ...; used to print explicitly the challenge string for debug
-    std::map<size_t, std::string> challenge_str;
-    challenge_str[0] = "beta";
-    challenge_str[1] = "gamma";
-    challenge_str[2] = "alpha";
-    challenge_str[3] = "zeta";
-    challenge_str[4] = "nu";
-    challenge_str[5] = "u";
+    std::vector<std::string> challenge_str = {
+        "beta", "gamma", "alpha", "zeta", "nu", "u"};
 
     // find the mathcing index
     size_t i = 0;