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feat: support go 1.26 and 1.27 #66

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Merged
not-matthias merged 1 commit into from
Aug 21, 2026
Merged

feat: support go 1.26 and 1.27 #66

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2 changes: 1 addition & 1 deletion .github/workflows/ci.yml
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Expand Up @@ -22,7 +22,7 @@ jobs:
runs-on: ubuntu-latest
strategy:
matrix:
go-version: ["1.24.x", "1.25.x"]
go-version: ["1.24.x", "1.25.x", "1.26.x", "1.27.x"]
env:
# Needed for the quic-go test
GOEXPERIMENT: ${{ matrix.go-version == '1.24.x' && 'synctest' || '' }}
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4 changes: 2 additions & 2 deletions AGENTS.md
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Expand Up @@ -22,7 +22,7 @@ cargo test test_name_here

Pre-commit hooks enforce: `go-mod-tidy`, `go-fmt`, `cargo fmt`, `cargo check --all-targets`, `clippy -D warnings`.

CI tests against Go 1.24.x and 1.25.x. Go 1.24 tests require `GOEXPERIMENT=synctest`.
CI tests against Go 1.24.x, 1.25.x, 1.26.x and 1.27.x. Go 1.24 tests require `GOEXPERIMENT=synctest`.

## Architecture

Expand All @@ -31,7 +31,7 @@ Rust workspace with a single crate: `go-runner/` (`codspeed-go-runner`), edition
**Flow:** `main.rs` parses CLI args → `runner::run()` generates overlay + runs `go test` → Go benchmarks write raw JSON results to `$CODSPEED_PROFILE_FOLDER/raw_results/` → `collect_walltime_results()` aggregates into `results/{pid}.json`.

**Overlay mechanism:** Three files are overlaid into `$GOROOT/src/testing/`:
- `benchmark.go` — replaces the standard `testing.B` implementation (version-specific: 1.24 or 1.25+)
- `benchmark.go` — replaces the standard `testing.B` implementation (version-specific: 1.24, 1.25 or 1.26+)
- `codspeed.go` — CodSpeed measurement logic, result saving, `codspeed` struct with per-round measurements
- `instrument-hooks.go` — cgo FFI bindings to the C instrument-hooks library (downloaded at runtime)

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4 changes: 2 additions & 2 deletions go-runner/overlay/README.md
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Expand Up @@ -4,8 +4,8 @@ This directory contains CodSpeed instrumentation overlays for Go's standard `tes

## Files

- `benchmark1.24.0.go`, `benchmark1.25.0.go` - Modified versions of Go's `testing/benchmark.go` with CodSpeed instrumentation
- `benchmark1.24.0.patch`, `benchmark1.25.0.patch` - Patch files showing differences from upstream
- `benchmark1.24.0.go`, `benchmark1.25.0.go`, `benchmark1.26.0.go` - Modified versions of Go's `testing/benchmark.go` with CodSpeed instrumentation
- `benchmark1.24.0.patch`, `benchmark1.25.0.patch`, `benchmark1.26.0.patch` - Patch files showing differences from upstream
- `codspeed.go` - CodSpeed-specific benchmark extensions
- `instrument-hooks.go` - Bindings to the instrument-hooks library

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