testing.TB.Fatalf
standard libraryThe 634th most-called standard-library method by production calls. Called 3,248 times across 184 modules; 1,134 of those run outside tests and generated code.
- prod calls
- 1,134
- non-test, non-generated
- all calls
- 3,248
- total callsites
- modules
- 184
- distinct callers
- in loop
- 10%
- of prod calls
- in tests
- 65%
- 2,114 calls
- resolved
- 3%
- 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 →
- Embedded method3%Reached through an embedded type.
- Interface method97%Called through an interface. The runtime target may differ.
- Method value<1%A method captured as a value, then called.
who calls this
Notable callers
Production calls into TB.Fatalf from notable Go projects. Open one on the map to see what else it hammers.
- Vault 107 9%
- Tailscale 103 9%
- Nomad 55 5%
- Kubernetes 49 4%
- Docker 48 4%
where it's called
Callsites in the wild
12 representative callsites of 3,248, prioritizing in-loop and non-test usage. We link to source, never display it.
-
cilium/cilium @v1.20.0
in loop -
cockroachdb/cockroach @v19.2.12+incompatible
in loop -
docker/docker @v28.5.2+incompatible
in loop - in loop
- in loop
- in loop
-
lib/pq @v1.12.3
in loop - in loop
-
pion/transport/v4 @v4.1.0
in loop - in loop
- in loop
-
seaweedfs/seaweedfs @v0.0.0-20260805044234-3c549b33ab8d
in loop
top callers
The modules that reach for it
The modules that call TB.Fatalf most in this snapshot.
- golang.org/x/net2267%
- github.com/pocketbase/pocketbase1866%
- github.com/sagernet/tailscale1846%
- github.com/tailscale/tailscale1846%
- tailscale.com1846%
siblings
More from testing
The other most-called members in this package. See all →