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callcount

io.PipeWriter.CloseWithError

standard library

The 1547th most-called standard-library method by production calls. Called 433 times across 104 modules; 401 of those run outside tests and generated code.

0% in production calls vs 2026-W37 (400 → 401)

All of io → Docs on pkg.go.dev ↗

prod calls
401
non-test, non-generated
all calls
433
total callsites
modules
104
distinct callers
in loop
35%
of prod calls
in tests
7%
32 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 →

  • Concrete method100%A method on a value whose type is known exactly.
  • Embedded method<1%Reached through an embedded type.

who calls this

Notable callers

Production calls into PipeWriter.CloseWithError from notable Go projects. Open one on the map to see what else it hammers.

where it's called

Callsites in the wild

12 representative callsites of 433, prioritizing in-loop and non-test usage. We link to source, never display it.

top callers

The modules that reach for it

The modules that call PipeWriter.CloseWithError most in this snapshot.

  • github.com/google/go-containerregistry194%
  • github.com/go-git/go-git/v5174%
  • github.com/dapr/dapr164%
  • github.com/minio/minio164%
  • github.com/awslabs/soci-snapshotter153%

siblings

More from io

The other most-called members in this package. See all →