log.Fatal
standard libraryThe 197th most-called standard-library function by production calls. Called 8,180 times across 589 modules; 5,083 of those run outside tests and generated code.
0% in production calls vs 2026-W37 (5,076 → 5,083)
- prod calls
- 5,083
- non-test, non-generated
- all calls
- 8,180
- total callsites
- modules
- 589
- distinct callers
- in loop
- 7%
- of prod calls
- in tests
- 38%
- 3,096 calls
- resolved
- 100%
- to a known target
resolution mix
How each call resolves
How each call was attributed. Only resolved kinds, where the target function is known, count toward the ranking. Interface dispatch and unresolved receivers are reported separately and never guessed. Read the taxonomy →
- Package function100%A direct call to an exported package function, resolved by type.
who calls this
Notable callers
Production calls into Fatal from notable Go projects. Open one on the map to see what else it hammers.
- Go (golang.org/x) 158 3%
- Tailscale 141 3%
- Kubernetes 130 3%
- CockroachDB 105 2%
- NATS 78 2%
where it's called
Callsites in the wild
12 representative callsites of 8,180, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
-
liamstask/goose @v0.0.0-20150115234039-8488cc47d90c
lib/goose/migrate.go:215
in loop -
CCTV/age @v0.0.0-20260829155415-4448f2097b2d
internal/generate.go:43
in loop - in loop
- in loop
- in loop
- in loop
- in loop
-
Binject/debug @v0.0.0-20260128230015-4e22595eaac6
in loop -
GoogleCloudPlatform/terraformer @v0.0.0-20260316201050-1807affdde9e
in loop -
IBM-Cloud/bluemix-go @v0.0.0-20260916083538-6e91b9f8f36f
in loop -
Melkeydev/go-blueprint @v0.10.11
in loop
top callers
The modules that reach for it
The modules that call Fatal most in this snapshot.
- github.com/IBM-Cloud/bluemix-go81510%
- github.com/u-root/u-root2763%
- github.com/google/go-cloud2303%
- github.com/tailscale/tailscale1992%
- tailscale.com1992%
siblings
More from log
The other most-called functions in this package. See all →