cmd/compile: confusing error message "not enough arguments in call to F"

[yansal]

What version of Go are you using (go version)?

$ go version
go version go1.25.4 linux/amd64

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE=''
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/home/ysalaun/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/home/ysalaun/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build3938636047=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/home/ysalaun/z/gobug/go.mod'
GOMODCACHE='/home/ysalaun/go/pkg/mod'
GONOPROXY='gitlab.ateme.net'
GONOSUMDB='gitlab.ateme.net'
GOOS='linux'
GOPATH='/home/ysalaun/go'
GOPRIVATE='gitlab.ateme.net'
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='on'
GOTELEMETRYDIR='/home/ysalaun/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.25.1'
GOWORK=''
PKG_CONFIG='pkg-config'
uname -sr: Linux 6.8.0-87-generic
Distributor ID:	Ubuntu
Description:	Ubuntu 22.04.5 LTS
Release:	22.04
Codename:	jammy
/lib/x86_64-linux-gnu/libc.so.6: GNU C Library (Ubuntu GLIBC 2.35-0ubuntu3.11) stable release version 2.35.
gdb --version: GNU gdb (Ubuntu 12.1-0ubuntu1~22.04.2) 12.1

What did you do?

Try to call a method that is undefined.

https://go.dev/play/p/X1HN2CRqe6N

What did you expect to see?

Only the second error message saying the method is undefined

./prog.go:14:6: v.f undefined (type T1 has no field or method f)

What did you see instead?

Two error messages.

./prog.go:14:4: not enough arguments in call to F
	have (T1)
	want (T, error)
./prog.go:14:6: v.f undefined (type T1 has no field or method f)

The first error message is confusing

[gabyhelp]

Related Issues

• cmd/compile: expression calling an undefined method gets adorned with receiver's type in error message #76103 (closed)
• cmd/compile, go/types: the "have" section with variadic argument show slice and not variadic in "not-enough/too-many values" compiler error message #70150 (closed)
• Improve "not enough arguments" compiler error #18353 (closed)

Related Discussions

• Confusing error message: Not enough arguments in Fooer.Foo

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