Decision Workspace
va_list vs va_list-test vs libffi
Side-by-side comparison of Rust crates
43
va_list
growingv0.2.1
Provides a rust implementation of the 'va_list' type for a small set of ABIs. Allowing rust implementations of functions like vprintf.
32
va_list-test
growingv0.0.1
Testing helpers for the va_list crate
70
libffi
growingv5.1.0
Rust bindings for libffi
Core Metrics
| va_list | va_list-test | libffi | |
|---|---|---|---|
| Health Score | 43 | 32 | 70 |
| Total Downloads | 1.4M | 4.0K | 2.7M |
| 30d Downloads | 85.4K | 0 | 187.2K |
| Dependents | 93 | 1 | 535 |
| Releases | 10 | 1 | 46 |
| Last Updated | 362d ago | 3818d ago | 145d ago |
| Age | 10y 11m | 10y 11m | 9y 11m |
Health Breakdown
va_list
Maintenance
5
Quality
15
Community
8
Popularity
7
Documentation
8
va_list-test
Maintenance
1
Quality
15
Community
4
Popularity
4
Documentation
8
libffi
Maintenance
11
Quality
23
Community
16
Popularity
8
Documentation
12
Technical Details
| va_list | va_list-test | libffi | |
|---|---|---|---|
| Version | 0.2.1 | 0.0.1 | 5.1.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT | MIT/Apache-2.0 |
| Dependencies | 2 | 1 | 3 |
| Crate Size | 11KB | 733B | 33KB |
| Features | 0 | 0 | 5 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | — | — | 2021 |
| MSRV | — | — | 1.78 |
| Owners | 1 | 1 | 4 |
Links
Quick Verdict
- •libffi leads with a health score of 70/100, but none of the options score above 80.
- •libffi is depended on by 535 crates — strongest ecosystem trust.
- •⚠ va_list-test has not been updated in over a year.
- •va_list, va_list-test are pre-1.0 — API may change.