From d980067810d18723f75cdb47bd1166625087c45d Mon Sep 17 00:00:00 2001
From: Simon Warta <simon@warta.it>
Date: Tue, 3 Jan 2023 18:16:58 +0100
Subject: [PATCH 1/3] Export Instantiate2AddressError and make it usable

---
 packages/std/src/addresses.rs | 12 +++++++++++-
 packages/std/src/lib.rs       |  2 +-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/packages/std/src/addresses.rs b/packages/std/src/addresses.rs
index 880e2171b7..39a4719291 100644
--- a/packages/std/src/addresses.rs
+++ b/packages/std/src/addresses.rs
@@ -7,6 +7,7 @@ use sha2::{
 use std::borrow::Cow;
 use std::fmt;
 use std::ops::Deref;
+use thiserror::Error;
 
 use crate::{binary::Binary, HexBinary};
 
@@ -275,7 +276,7 @@ impl fmt::Display for CanonicalAddr {
     }
 }
 
-#[derive(Debug)]
+#[derive(Error, Debug, PartialEq, Eq)]
 pub enum Instantiate2AddressError {
     /// Checksum must be 32 bytes
     InvalidChecksumLength,
@@ -283,6 +284,15 @@ pub enum Instantiate2AddressError {
     InvalidSaltLength,
 }
 
+impl fmt::Display for Instantiate2AddressError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Instantiate2AddressError::InvalidChecksumLength => write!(f, "invalid checksum length"),
+            Instantiate2AddressError::InvalidSaltLength => write!(f, "invalid salt length"),
+        }
+    }
+}
+
 /// Creates a contract address using the predictable address format introduced with
 /// wasmd 0.29. When using instantiate2, this is a way to precompute the address.
 /// When using instantiate, the contract address will use a different algorithm and
diff --git a/packages/std/src/lib.rs b/packages/std/src/lib.rs
index d40d25d68f..a15f0f4c62 100644
--- a/packages/std/src/lib.rs
+++ b/packages/std/src/lib.rs
@@ -26,7 +26,7 @@ mod timestamp;
 mod traits;
 mod types;
 
-pub use crate::addresses::{instantiate2_address, Addr, CanonicalAddr};
+pub use crate::addresses::{instantiate2_address, Addr, CanonicalAddr, Instantiate2AddressError};
 pub use crate::binary::Binary;
 pub use crate::coin::{coin, coins, has_coins, Coin};
 pub use crate::deps::{Deps, DepsMut, OwnedDeps};

From e86d906d9728ed2b6c9572a8ee45ae16ea9bb16c Mon Sep 17 00:00:00 2001
From: Simon Warta <simon@warta.it>
Date: Tue, 3 Jan 2023 18:33:36 +0100
Subject: [PATCH 2/3] Add virus contract

---
 contracts/README.md                         |    8 +
 contracts/virus/.cargo/config               |    6 +
 contracts/virus/Cargo.lock                  | 1936 +++++++++++++++++++
 contracts/virus/Cargo.toml                  |   42 +
 contracts/virus/README.md                   |    3 +
 contracts/virus/schema/raw/execute.json     |   35 +
 contracts/virus/schema/raw/instantiate.json |    6 +
 contracts/virus/schema/virus.json           |   50 +
 contracts/virus/src/bin/schema.rs           |   10 +
 contracts/virus/src/contract.rs             |   99 +
 contracts/virus/src/errors.rs               |   11 +
 contracts/virus/src/lib.rs                  |    3 +
 contracts/virus/src/msg.rs                  |   15 +
 contracts/virus/tests/integration.rs        |    1 +
 14 files changed, 2225 insertions(+)
 create mode 100644 contracts/virus/.cargo/config
 create mode 100644 contracts/virus/Cargo.lock
 create mode 100644 contracts/virus/Cargo.toml
 create mode 100644 contracts/virus/README.md
 create mode 100644 contracts/virus/schema/raw/execute.json
 create mode 100644 contracts/virus/schema/raw/instantiate.json
 create mode 100644 contracts/virus/schema/virus.json
 create mode 100644 contracts/virus/src/bin/schema.rs
 create mode 100644 contracts/virus/src/contract.rs
 create mode 100644 contracts/virus/src/errors.rs
 create mode 100644 contracts/virus/src/lib.rs
 create mode 100644 contracts/virus/src/msg.rs
 create mode 100644 contracts/virus/tests/integration.rs

diff --git a/contracts/README.md b/contracts/README.md
index cb89fc0039..1f581ed2e0 100644
--- a/contracts/README.md
+++ b/contracts/README.md
@@ -36,6 +36,8 @@ Introducing the development contracts in the order they were created.
 9. **cyberpunk** is an attempt to cleanup hackatom and make writing runtime
    tests (cosmwasm-vm/wamsmvm) easier by avoid the need for the escrow setup
    that hackatom has.
+10. **virus** is a contract that reproduces itself and does nothing useful
+    beyond that, showing how to use instantiate2 from a contract.
 
 ## Optimized builds
 
@@ -92,6 +94,11 @@ docker run --rm -v "$(pwd)":/code \
   --mount type=volume,source="devcontract_cache_staking",target=/code/contracts/staking/target \
   --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
   cosmwasm/rust-optimizer:0.12.9 ./contracts/staking
+
+docker run --rm -v "$(pwd)":/code \
+  --mount type=volume,source="devcontract_cache_virus",target=/code/contracts/virus/target \
+  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
+  cosmwasm/rust-optimizer:0.12.9 ./contracts/virus
 ```
 
 ## Entry points
@@ -107,3 +114,4 @@ points in order to demonstrate and test the flexibility we have.
 | queue       | yes         | yes           |
 | reflect     | yes         | no            |
 | staking     | yes         | no            |
+| virus       | no          | no            |
diff --git a/contracts/virus/.cargo/config b/contracts/virus/.cargo/config
new file mode 100644
index 0000000000..f5174787c2
--- /dev/null
+++ b/contracts/virus/.cargo/config
@@ -0,0 +1,6 @@
+[alias]
+wasm = "build --release --lib --target wasm32-unknown-unknown"
+wasm-debug = "build --lib --target wasm32-unknown-unknown"
+unit-test = "test --lib"
+integration-test = "test --test integration"
+schema = "run --bin schema"
diff --git a/contracts/virus/Cargo.lock b/contracts/virus/Cargo.lock
new file mode 100644
index 0000000000..c46c654d81
--- /dev/null
+++ b/contracts/virus/Cargo.lock
@@ -0,0 +1,1936 @@
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+ "serde",
+ "serde_bytes",
+ "target-lexicon",
+ "thiserror",
+ "wasmer-artifact",
+ "wasmer-compiler",
+ "wasmer-types",
+ "wasmer-vm",
+]
+
+[[package]]
+name = "wasmer-engine-dylib"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad0358af9c154724587731175553805648d9acb8f6657880d165e378672b7e53"
+dependencies = [
+ "cfg-if",
+ "enum-iterator",
+ "enumset",
+ "leb128",
+ "libloading",
+ "loupe",
+ "object 0.28.3",
+ "rkyv",
+ "serde",
+ "tempfile",
+ "tracing",
+ "wasmer-artifact",
+ "wasmer-compiler",
+ "wasmer-engine",
+ "wasmer-object",
+ "wasmer-types",
+ "wasmer-vm",
+ "which",
+]
+
+[[package]]
+name = "wasmer-engine-universal"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "440dc3d93c9ca47865a4f4edd037ea81bf983b5796b59b3d712d844b32dbef15"
+dependencies = [
+ "cfg-if",
+ "enumset",
+ "leb128",
+ "loupe",
+ "region",
+ "rkyv",
+ "wasmer-compiler",
+ "wasmer-engine",
+ "wasmer-engine-universal-artifact",
+ "wasmer-types",
+ "wasmer-vm",
+ "winapi",
+]
+
+[[package]]
+name = "wasmer-engine-universal-artifact"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68f1db3f54152657eb6e86c44b66525ff7801dad8328fe677da48dd06af9ad41"
+dependencies = [
+ "enum-iterator",
+ "enumset",
+ "loupe",
+ "rkyv",
+ "thiserror",
+ "wasmer-artifact",
+ "wasmer-compiler",
+ "wasmer-types",
+]
+
+[[package]]
+name = "wasmer-middlewares"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7812438ed2f37203a37007cdb5332b8475cb2b16e15d51299b2647894e9ed3a"
+dependencies = [
+ "loupe",
+ "wasmer",
+ "wasmer-types",
+ "wasmer-vm",
+]
+
+[[package]]
+name = "wasmer-object"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8d831335ff3a44ecf451303f6f891175c642488036b92ceceb24ac8623a8fa8b"
+dependencies = [
+ "object 0.28.3",
+ "thiserror",
+ "wasmer-compiler",
+ "wasmer-types",
+]
+
+[[package]]
+name = "wasmer-types"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39df01ea05dc0a9bab67e054c7cb01521e53b35a7bb90bd02eca564ed0b2667f"
+dependencies = [
+ "backtrace",
+ "enum-iterator",
+ "indexmap",
+ "loupe",
+ "more-asserts",
+ "rkyv",
+ "serde",
+ "thiserror",
+]
+
+[[package]]
+name = "wasmer-vm"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30d965fa61f4dc4cdb35a54daaf7ecec3563fbb94154a6c35433f879466247dd"
+dependencies = [
+ "backtrace",
+ "cc",
+ "cfg-if",
+ "corosensei",
+ "enum-iterator",
+ "indexmap",
+ "lazy_static",
+ "libc",
+ "loupe",
+ "mach",
+ "memoffset",
+ "more-asserts",
+ "region",
+ "rkyv",
+ "scopeguard",
+ "serde",
+ "thiserror",
+ "wasmer-artifact",
+ "wasmer-types",
+ "winapi",
+]
+
+[[package]]
+name = "wasmparser"
+version = "0.83.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "718ed7c55c2add6548cca3ddd6383d738cd73b892df400e96b9aa876f0141d7a"
+
+[[package]]
+name = "which"
+version = "4.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b55551e42cbdf2ce2bedd2203d0cc08dba002c27510f86dab6d0ce304cba3dfe"
+dependencies = [
+ "either",
+ "libc",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-sys"
+version = "0.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43dbb096663629518eb1dfa72d80243ca5a6aca764cae62a2df70af760a9be75"
+dependencies = [
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd761fd3eb9ab8cc1ed81e56e567f02dd82c4c837e48ac3b2181b9ffc5060807"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cab0cf703a96bab2dc0c02c0fa748491294bf9b7feb27e1f4f96340f208ada0e"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8cfdbe89cc9ad7ce618ba34abc34bbb6c36d99e96cae2245b7943cd75ee773d0"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4dd9b0c0e9ece7bb22e84d70d01b71c6d6248b81a3c60d11869451b4cb24784"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff1e4aa646495048ec7f3ffddc411e1d829c026a2ec62b39da15c1055e406eaa"
+
+[[package]]
+name = "zeroize"
+version = "1.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c394b5bd0c6f669e7275d9c20aa90ae064cb22e75a1cad54e1b34088034b149f"
diff --git a/contracts/virus/Cargo.toml b/contracts/virus/Cargo.toml
new file mode 100644
index 0000000000..24df513fab
--- /dev/null
+++ b/contracts/virus/Cargo.toml
@@ -0,0 +1,42 @@
+[package]
+name = "virus"
+version = "0.0.0"
+authors = ["Simon Warta <webmaster128@users.noreply.github.com>"]
+edition = "2021"
+publish = false
+license = "Apache-2.0"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[profile.release]
+opt-level = 3
+debug = false
+rpath = false
+lto = true
+debug-assertions = false
+codegen-units = 1
+panic = 'abort'
+incremental = false
+overflow-checks = true
+
+[features]
+# Add feature "cranelift" to default if you need 32 bit or ARM support
+default = []
+# Use cranelift backend instead of singlepass. This is required for development on 32 bit or ARM machines.
+cranelift = ["cosmwasm-vm/cranelift"]
+# for quicker tests, cargo test --lib
+# for more explicit tests, cargo test --features=backtraces
+backtraces = ["cosmwasm-std/backtraces", "cosmwasm-vm/backtraces"]
+
+[dependencies]
+cosmwasm-schema = { path = "../../packages/schema" }
+cosmwasm-std = { path = "../../packages/std", features = ["cosmwasm_1_2"] }
+schemars = "0.8.3"
+serde = { version = "1.0.103", default-features = false, features = ["derive"] }
+thiserror = "1.0.26"
+
+[dev-dependencies]
+cosmwasm-vm = { path = "../../packages/vm", default-features = false, features = ["iterator"] }
diff --git a/contracts/virus/README.md b/contracts/virus/README.md
new file mode 100644
index 0000000000..497dbf17e3
--- /dev/null
+++ b/contracts/virus/README.md
@@ -0,0 +1,3 @@
+# Virus contract
+
+A contract that clones itself over various levels.
diff --git a/contracts/virus/schema/raw/execute.json b/contracts/virus/schema/raw/execute.json
new file mode 100644
index 0000000000..0c6d37f103
--- /dev/null
+++ b/contracts/virus/schema/raw/execute.json
@@ -0,0 +1,35 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "ExecuteMsg",
+  "oneOf": [
+    {
+      "type": "object",
+      "required": [
+        "spread"
+      ],
+      "properties": {
+        "spread": {
+          "type": "object",
+          "required": [
+            "levels",
+            "parent_path"
+          ],
+          "properties": {
+            "levels": {
+              "description": "The number of levels of spreading. When set to 0, the contract performs a no-op.",
+              "type": "integer",
+              "format": "uint32",
+              "minimum": 0.0
+            },
+            "parent_path": {
+              "description": "A slash separated path to the instance creating this one. The root is the empty string.",
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        }
+      },
+      "additionalProperties": false
+    }
+  ]
+}
diff --git a/contracts/virus/schema/raw/instantiate.json b/contracts/virus/schema/raw/instantiate.json
new file mode 100644
index 0000000000..1352613d57
--- /dev/null
+++ b/contracts/virus/schema/raw/instantiate.json
@@ -0,0 +1,6 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "InstantiateMsg",
+  "type": "object",
+  "additionalProperties": false
+}
diff --git a/contracts/virus/schema/virus.json b/contracts/virus/schema/virus.json
new file mode 100644
index 0000000000..71f03d0963
--- /dev/null
+++ b/contracts/virus/schema/virus.json
@@ -0,0 +1,50 @@
+{
+  "contract_name": "virus",
+  "contract_version": "0.0.0",
+  "idl_version": "1.0.0",
+  "instantiate": {
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "InstantiateMsg",
+    "type": "object",
+    "additionalProperties": false
+  },
+  "execute": {
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "ExecuteMsg",
+    "oneOf": [
+      {
+        "type": "object",
+        "required": [
+          "spread"
+        ],
+        "properties": {
+          "spread": {
+            "type": "object",
+            "required": [
+              "levels",
+              "parent_path"
+            ],
+            "properties": {
+              "levels": {
+                "description": "The number of levels of spreading. When set to 0, the contract performs a no-op.",
+                "type": "integer",
+                "format": "uint32",
+                "minimum": 0.0
+              },
+              "parent_path": {
+                "description": "A slash separated path to the instance creating this one. The root is the empty string.",
+                "type": "string"
+              }
+            },
+            "additionalProperties": false
+          }
+        },
+        "additionalProperties": false
+      }
+    ]
+  },
+  "query": null,
+  "migrate": null,
+  "sudo": null,
+  "responses": null
+}
diff --git a/contracts/virus/src/bin/schema.rs b/contracts/virus/src/bin/schema.rs
new file mode 100644
index 0000000000..3417811600
--- /dev/null
+++ b/contracts/virus/src/bin/schema.rs
@@ -0,0 +1,10 @@
+use cosmwasm_schema::write_api;
+
+use virus::msg::{ExecuteMsg, InstantiateMsg};
+
+fn main() {
+    write_api! {
+        instantiate: InstantiateMsg,
+        execute: ExecuteMsg,
+    }
+}
diff --git a/contracts/virus/src/contract.rs b/contracts/virus/src/contract.rs
new file mode 100644
index 0000000000..dabd590cbd
--- /dev/null
+++ b/contracts/virus/src/contract.rs
@@ -0,0 +1,99 @@
+use cosmwasm_std::{
+    entry_point, instantiate2_address, to_binary, Attribute, Binary, CodeInfoResponse,
+    ContractInfoResponse, DepsMut, Env, MessageInfo, Response, StdError, StdResult, WasmMsg,
+};
+
+use crate::errors::ContractError;
+use crate::msg::{ExecuteMsg, InstantiateMsg};
+
+#[entry_point]
+pub fn instantiate(
+    _deps: DepsMut,
+    _env: Env,
+    _info: MessageInfo,
+    _msg: InstantiateMsg,
+) -> StdResult<Response> {
+    Err(StdError::generic_err(
+        "You can only use this contract for migrations",
+    ))
+}
+
+#[entry_point]
+pub fn execute(
+    deps: DepsMut,
+    env: Env,
+    info: MessageInfo,
+    msg: ExecuteMsg,
+) -> Result<Response, ContractError> {
+    match msg {
+        ExecuteMsg::Spread {
+            parent_path,
+            levels,
+        } => execute_spread(deps, env, info, parent_path, levels),
+    }
+}
+
+/// Basic reproduction number
+const R0: u32 = 2;
+
+pub fn execute_spread(
+    deps: DepsMut,
+    env: Env,
+    _info: MessageInfo,
+    parent_path: String,
+    levels: u32,
+) -> Result<Response, ContractError> {
+    if levels == 0 {
+        return Ok(Response::new());
+    }
+
+    let creator = deps.api.addr_canonicalize(env.contract.address.as_str())?;
+    let ContractInfoResponse { code_id, .. } = deps
+        .querier
+        .query_wasm_contract_info(env.contract.address)?;
+    let CodeInfoResponse { checksum, .. } = deps.querier.query_wasm_code_info(code_id)?;
+
+    let mut msgs = Vec::<WasmMsg>::new();
+    let mut attributes = Vec::<Attribute>::new();
+    for i in 0..R0 {
+        let path = format!("{parent_path}/{i}");
+        let label = format!("Instance {path}");
+        let salt = Binary::from(path.as_bytes());
+
+        attributes.push(Attribute::new(format!("path{i}"), path.clone()));
+
+        let address = deps
+            .api
+            .addr_humanize(&instantiate2_address(&checksum, &creator, &salt)?)?;
+        attributes.push(Attribute::new(
+            format!("predicted_address{i}"),
+            address.clone(),
+        ));
+
+        msgs.push(WasmMsg::Instantiate2 {
+            admin: None,
+            code_id,
+            label,
+            msg: to_binary(&InstantiateMsg {})?,
+            funds: vec![],
+            salt,
+        });
+
+        // we know the address of the newly instantiated contract, so let's execute it right away
+        msgs.push(WasmMsg::Execute {
+            contract_addr: address.into(),
+            msg: to_binary(&ExecuteMsg::Spread {
+                parent_path: path,
+                levels: levels - 1,
+            })?,
+            funds: vec![],
+        });
+    }
+
+    Ok(Response::new()
+        .add_attributes(attributes)
+        .add_messages(msgs))
+}
+
+#[cfg(test)]
+mod tests {}
diff --git a/contracts/virus/src/errors.rs b/contracts/virus/src/errors.rs
new file mode 100644
index 0000000000..5a5361b574
--- /dev/null
+++ b/contracts/virus/src/errors.rs
@@ -0,0 +1,11 @@
+use cosmwasm_std::{Instantiate2AddressError, StdError};
+use thiserror::Error;
+
+#[derive(Error, Debug, PartialEq)]
+pub enum ContractError {
+    #[error("{0}")]
+    /// this is needed so we can use `bucket.load(...)?` and have it auto-converted to the custom error
+    Std(#[from] StdError),
+    #[error("{0}")]
+    Instantiate2Address(#[from] Instantiate2AddressError),
+}
diff --git a/contracts/virus/src/lib.rs b/contracts/virus/src/lib.rs
new file mode 100644
index 0000000000..33208e28f1
--- /dev/null
+++ b/contracts/virus/src/lib.rs
@@ -0,0 +1,3 @@
+pub mod contract;
+mod errors;
+pub mod msg;
diff --git a/contracts/virus/src/msg.rs b/contracts/virus/src/msg.rs
new file mode 100644
index 0000000000..cdf26cc717
--- /dev/null
+++ b/contracts/virus/src/msg.rs
@@ -0,0 +1,15 @@
+use cosmwasm_schema::cw_serde;
+
+#[cw_serde]
+pub struct InstantiateMsg {}
+
+#[cw_serde]
+pub enum ExecuteMsg {
+    Spread {
+        /// A slash separated path to the instance creating this one.
+        /// The root is the empty string.
+        parent_path: String,
+        /// The number of levels of spreading. When set to 0, the contract performs a no-op.
+        levels: u32,
+    },
+}
diff --git a/contracts/virus/tests/integration.rs b/contracts/virus/tests/integration.rs
new file mode 100644
index 0000000000..8b13789179
--- /dev/null
+++ b/contracts/virus/tests/integration.rs
@@ -0,0 +1 @@
+

From af99739be4a9aab12ad858e71436df232e284b7f Mon Sep 17 00:00:00 2001
From: Simon Warta <simon@warta.it>
Date: Thu, 5 Jan 2023 17:44:12 +0100
Subject: [PATCH 3/3] Test contract_virus in CI

---
 .circleci/config.yml | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index ad9fc54090..9d3e0d6975 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -65,6 +65,7 @@ workflows:
       - contract_queue
       - contract_reflect
       - contract_staking
+      - contract_virus
       - fmt
       - fmt_extra
       - clippy:
@@ -138,6 +139,9 @@ jobs:
           keys:
             - v4-arm64-contracts-rust:1.60.0-{{ checksum "contracts/crypto-verify/Cargo.lock" }}-{{ checksum "contracts/hackatom/Cargo.lock" }}-{{ checksum "contracts/queue/Cargo.lock" }}-{{ checksum "contracts/reflect/Cargo.lock" }}-{{ checksum "contracts/staking/Cargo.lock" }}
             - v4-arm64-contracts-rust:1.60.0-
+      # Test a few contracts that do something potentially interesting in the VM
+      # to test contract execution on ARM64.
+      # No need to add all contracts here.
       - run:
           name: "contracts/crypto-verify: integration-test"
           working_directory: ~/project/contracts/crypto-verify
@@ -761,6 +765,33 @@ jobs:
             - target/wasm32-unknown-unknown/release/deps
           key: cargocache-v2-contract_staking-rust:1.60.0-{{ checksum "Cargo.lock" }}
 
+  contract_virus:
+    docker:
+      - image: rust:1.60.0
+    environment:
+      RUST_BACKTRACE: 1
+    working_directory: ~/cosmwasm/contracts/virus
+    steps:
+      - checkout:
+          path: ~/cosmwasm
+      - run:
+          name: Version information
+          command: rustc --version; cargo --version; rustup --version
+      - restore_cache:
+          keys:
+            - cargocache-v2-contract_virus-rust:1.60.0-{{ checksum "Cargo.lock" }}
+      - check_contract
+      - save_cache:
+          paths:
+            - /usr/local/cargo/registry
+            - target/debug/.fingerprint
+            - target/debug/build
+            - target/debug/deps
+            - target/wasm32-unknown-unknown/release/.fingerprint
+            - target/wasm32-unknown-unknown/release/build
+            - target/wasm32-unknown-unknown/release/deps
+          key: cargocache-v2-contract_virus-rust:1.60.0-{{ checksum "Cargo.lock" }}
+
   fmt:
     docker:
       - image: rust:1.60.0