Foundry v1.3.2

Foundry v1.3.2 is a bugfix release for forge.

Forge Fixes

fix(lint): explicit message when lint on build failures (#11224) by @grandizzy
fix(lint): lint only files that we build (#11247) by @grandizzy
fix: force 4844 txtype in blobhashes setter (#11355) by @mattsse
fix(forge): handle error if etherscan identifier cannot resolve config (#11356) by @grandizzy
fix: disable tx gas limit cap (#11347) by @mattsse
fix(forge): write ordered deps in foundry.lock (#11360) by @grandizzy
fix(invariant): ensure strategy always generates valid sender (#11370) by @grandizzy
fix(forge): do not panic on checkpoint revert (#11380) by @grandizzy

Foundry v1.3.1

Foundry v1.3.1 is a bugfix release for anvil, cast and forge.

Anvil Fixes

fix(anvil): unwrap panic in eth/backend/mem/mod.rs (#11141) by @zerosnacks
fix: use empty 7702 auths (#11182) by @mattsse

Cast Fixes

fix(cast): use all providers if local artifacts used (#11090) by @grandizzy
fix(cast): improve handling of mktx --raw-unsigned with runtime validation (#11111) by @mablr

Forge Fixes

fix(forge): consistent handling unresolved imports (#11164) by @grandizzy
fix(lint): exclude disabled ids in multi-lint passes (#11122) by @0xrusowsky
fix(forge): bump compilers to fix remapping sol file (#11184) by @grandizzy
fix(coverage): disambiguate duplicate function names (#11188) by @DaniPopes
fix(forge): set state changes journal in active fork (#11196) by @grandizzy
fix(forge): improve error messages for etherscan verification failures (#11194) by @shiyasmohd
fix(fmt): don't panic on stdin read failure (#11226) by @DaniPopes
fix(forge script): repeated vm.createSelectFork with same RPC causes segfault (#11250) by @zerosnacks

Foundry v1.3.0

This release includes support for forge lint, time-based campaigns and coverage-guided fuzzing for invariant tests, table tests, fork test improvements for Reth clients, and new EIP-712 features. Foundry v1.3.0 is built on top of the latest revm v27 Foundry v1.3.0 is built on top of the latest revm v27 and comes with an improved foundryup installer.

⚠️ It is highly recommended to update to latest version of foundryup, which avoids unnecessary downloads and verifies hashes of downloaded binaries upon install. You can update your installation by running: foundryup --update.

Performance Improvements

This release includes an updated revm (#11079) and an optimized inspector stack (#11077), which enhances Forge test performance by up to 21.50% compared to previous versions

Forge Test

Repository	v1.2.3	v1.3.0
ithacaxyz-account	3.69 s	3.12 s
solady	2.95 s	2.32 s
Uniswap-v4-core	8.03 s	6.76 s
sparkdotfi-spark-psm	57.02 s	44.76 s

Forge Fuzz Test

Repository	v1.2.3	v1.3.0
ithacaxyz-account	3.58 s	3.39 s
solady	3.34 s	2.54 s
Uniswap-v4-core	8.03 s	7.46 s
sparkdotfi-spark-psm	3.70 s	3.06 s

Forked tests using the Reth client are now faster thanks to the eth_getAccountInfo API (#10496 #10838), reducing account data fetching from three requests to one. Foundry detects if eth_getAccountInfo is available and falls back to the legacy method otherwise.
Example: Running forge test --mt statefulFuzz_curve_test on spark-alm-controller showed over 5 seconds in test time savings.

Provider	Response Time
reth-ethereum.ithaca.xyz (with `eth_getAccountInfo`)	45.21s
reth-ethereum.ithaca.xyz (without `eth_getAccountInfo`)	50.83s
QuickNode (Paid)	59.66s
Alchemy (Free Tier)	182.12s
Infura (Free Tier)	176.88s

Forge Lint

As of v1.3.0, Forge ships with a built-in linter (#10405) that analyzes Solidity code for style, correctness, and best practices.

Lint rules are configurable in the [lint] section of foundry.toml and via inline comment directives.
Lints can be customized by severity or specific rule identifiers.
By default, linting runs during forge build. To disable it, set lint_on_build = false.
For more details please refer to foundry docs:
Supported lints
Linter configuration docs
How to contribute a lint rule

Invariant Test Improvements

Time-Based Campaigns

Previously, invariant tests were limited by a fixed number of runs (default: 256, max: 4294967295).
Now you can run them for a specific time duration by setting the timeout value (in seconds) in the [invariant] section of foundry.toml (#10190).

The test progress bar shows the number of runs and the end time.

test/GuidedTest.t.sol:CounterTest
 → invariant_Puzzle5: [4360] Runs, ends at 11:03:28 2025-06-03 UTC
 → invariant_Puzzle3: [8784] Runs, ends at 14:50:08 2025-06-04 UTC
 → invariant_Puzzle6: [77762] Runs, ends at 05:56:48 2025-06-09 UTC
 → invariant_Puzzle2: [8739] Runs, ends at 12:50:08 2025-06-02 UTC

Coverage-Guided Fuzzing

Enable this mode by setting a path to corpus_dir in your invariant config (#10190).
The coverage-Guided fuzzing mode targets a corpus_min_size by mutating entries a number of times (default: 5), favoring those likely to uncover new paths.

Supported mutations:

splice: Combines two sequences
interleave: Weaves two sequences together
prefix: Overwrites the beginning of a sequence
suffix: Overwrites the end of a sequence
mutate args: Randomizes some call arguments

Additional notes:

Entries that generate new coverage are saved to disk (default: .gz; set corpus_gzip = false to save as JSON).
On reruns, the saved corpus is loaded and reused.
Metadata (as JSON) is persisted for evicted corpus entries. This includes a unique ID, mutation count, and coverage improvements.
The fuzzing progress bar displays metrics for cumulative edges and features, corpus count and number of favored entries.

test/forge/invariant/StaticInvariantTest.sol:StaticInvariantTest
 → invariantHealthy: [60/2000] Runs
  - cumulative edges seen: 41
  - cumulative features seen: 6
  - corpus count: 15
  - favored items: 14

For more details please refer to invariant docs.

Table Tests

Foundry v1.3.0 comes with support for table testing (#10775), which enables the definition of a dataset (the "table") and the execution of a test function for each entry in that dataset. This approach helps ensure that certain combinations of inputs and conditions are tested.
For more details please refer to table testing foundry docs.

Improved EIP-712 support

Foundry v1.3.0 comes with additional utilities (commands and new cheatcodes) to make it easy and reliable to work with EIP-712 signatures (#10510).
For more details please refer to EIP-712 foundry guide.

Other

new Anvil APIs including endpoints to deal and set allowance for ERC20 tokens, add balance and get blob by hash
Vyper support for forge verify-contract command
fail_on_revert config for stateless fuzz tests

Anvil Features

feat(anvil): add block context overrides for eth_call and eth_estimateGas (#10487) by @mablr
feat: added rpc method to deal ERC20 tokens (#10495) by @Soubhik-10
feat: implement add_balance endpoint (#10636) by @pistomat
feat: Add anvil set erc20 allowance endpoint (#10746) by @pistomat
feat: added eth_sendRawTransactionSync and eth_sendTransactionSync support for anvil (#10860) by @Rimeeeeee
feat(anvil): reset to in-mem (#10897) by @yash-atreya
feat: added get_blob_by_hash (#10987) by @Soubhik-10
feat: add support for passthrough of debug_codeByHash (#11053) by @cakevm
feat(anvil): use signatures identifier for --print-traces (#11070) by @mattsse

Anvil Fixes

fix(anvil): guard against the blockchain advancing while checking latest block (#10714) by @alexghr
bug(anvil): incorrectly adds +1 gas when estimating transactions with explicit empty data field (#10786) by @gitToki
fix(anvil): inject the P256 precompile for --odyssey upon EVM construction and fix NotActivated error for --optimism (#10567) by @zerosnacks
fix(anvil): latest evm version should be prague (#10653) by @yash-atreya
fix: populate missing fields for eth simulate (#10682) by @mattsse
fix: receipt conversion (#10853) by @mattsse
fix: spawn state writer blocking (#10922) by @mattsse
fix: dont check pool for gettransaction receipt (#10946) by @mattsse
fix: use correct mix hash for header (#10951) by @mattsse
fix: use existing functions for accountinfo (#11134) by @mattsse
fix(anvil): unwrap panic in eth/backend/mem/mod.rs (#11141) by @zerosnacks