From d3dbfd6021f1601cdb4f17ab43785c51548ada4e Mon Sep 17 00:00:00 2001
From: Zahary Karadjov <zahary@status.im>
Date: Thu, 18 Aug 2022 19:25:51 +0300
Subject: [PATCH] libnfuzz uses the mainnet RuntimeConfig (the default one
 might differ in subtle ways)

---
 nfuzz/libnfuzz.nim | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/nfuzz/libnfuzz.nim b/nfuzz/libnfuzz.nim
index 1ba109d8b..15e352106 100644
--- a/nfuzz/libnfuzz.nim
+++ b/nfuzz/libnfuzz.nim
@@ -3,6 +3,7 @@
 
 import
   stew/ptrops, stew/ranges/ptr_arith, chronicles,
+  ../beacon_chain/networking/network_metadata,
   ../beacon_chain/spec/datatypes/phase0,
   ../beacon_chain/spec/[
     beaconstate, eth2_ssz_serialization, forks, validator, state_transition,
@@ -102,7 +103,7 @@ proc nfuzz_attestation(input: openArray[byte], xoutput: ptr byte,
 proc nfuzz_attester_slashing(input: openArray[byte], xoutput: ptr byte,
     xoutput_size: ptr uint, disable_bls: bool): bool {.exportc, raises: [FuzzCrashError, Defect].} =
   decodeAndProcess(AttesterSlashingInput):
-    process_attester_slashing(defaultRuntimeConfig, data.state, data.attesterSlashing, flags, cache).isOk
+    process_attester_slashing(mainnetMetadata.cfg, data.state, data.attesterSlashing, flags, cache).isOk
 
 proc nfuzz_block(input: openArray[byte], xoutput: ptr byte,
     xoutput_size: ptr uint, disable_bls: bool): bool {.exportc, raises: [FuzzCrashError, Defect].} =
@@ -126,7 +127,7 @@ proc nfuzz_block(input: openArray[byte], xoutput: ptr byte,
 
   decodeAndProcess(BlockInput):
     state_transition(
-      defaultRuntimeConfig, data, data.beaconBlock, flags, noRollback).isOk
+      mainnetMetadata.cfg, data, data.beaconBlock, flags, noRollback).isOk
 
 proc nfuzz_block_header(input: openArray[byte], xoutput: ptr byte,
     xoutput_size: ptr uint, disable_bls: bool): bool {.exportc, raises: [FuzzCrashError, Defect].} =
@@ -136,17 +137,17 @@ proc nfuzz_block_header(input: openArray[byte], xoutput: ptr byte,
 proc nfuzz_deposit(input: openArray[byte], xoutput: ptr byte,
     xoutput_size: ptr uint, disable_bls: bool): bool {.exportc, raises: [FuzzCrashError, Defect].} =
   decodeAndProcess(DepositInput):
-    process_deposit(defaultRuntimeConfig, data.state, data.deposit, flags).isOk
+    process_deposit(mainnetMetadata.cfg, data.state, data.deposit, flags).isOk
 
 proc nfuzz_proposer_slashing(input: openArray[byte], xoutput: ptr byte,
     xoutput_size: ptr uint, disable_bls: bool): bool {.exportc, raises: [FuzzCrashError, Defect].} =
   decodeAndProcess(ProposerSlashingInput):
-    process_proposer_slashing(defaultRuntimeConfig, data.state, data.proposerSlashing, flags, cache).isOk
+    process_proposer_slashing(mainnetMetadata.cfg, data.state, data.proposerSlashing, flags, cache).isOk
 
 proc nfuzz_voluntary_exit(input: openArray[byte], xoutput: ptr byte,
     xoutput_size: ptr uint, disable_bls: bool): bool {.exportc, raises: [FuzzCrashError, Defect].} =
   decodeAndProcess(VoluntaryExitInput):
-    process_voluntary_exit(defaultRuntimeConfig, data.state, data.exit, flags, cache).isOk
+    process_voluntary_exit(mainnetMetadata.cfg, data.state, data.exit, flags, cache).isOk
 
 # Note: Could also accept raw input pointer and access list_size + seed here.
 # However, list_size needs to be known also outside this proc to allocate xoutput.