cmd/cover: inconsistent NumStmt: changed from 1 to 2

[hitzhangjie]

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

$ go version
go version go1.16.3 darwin/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
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/zhangjie/Library/Caches/go-build"
GOENV="/Users/zhangjie/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/zhangjie/go/pkg/mod"
GONOPROXY="git.code.oa.com/*"
GONOSUMDB="git.code.oa.com/*"
GOOS="darwin"
GOPATH="/Users/zhangjie/go"
GOPRIVATE="git.code.oa.com/*"
GOPROXY="https://goproxy.cn,direct"
GOROOT="/usr/local/go"
GOSUMDB="off"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GOVCS=""
GOVERSION="go1.16.3"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/zhangjie/Projects/Tencent/techmap/trpc-go-cmdline/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/0j/mvtnlhyj5j9cyqqq1b27bgg40000gn/T/go-build2861231693=/tmp/go-build -gno-record-gcc-switches -fno-common"
GOROOT/bin/go version: go version go1.16.3 darwin/amd64
GOROOT/bin/go tool compile -V: compile version go1.16.3
uname -v: Darwin Kernel Version 19.6.0: Tue Jan 12 22:13:05 PST 2021; root:xnu-6153.141.16~1/RELEASE_X86_64
ProductName:	Mac OS X
ProductVersion:	10.15.7
BuildVersion:	19H524
lldb --version: lldb-1200.0.44.2
Apple Swift version 5.3.2 (swiftlang-1200.0.45 clang-1200.0.32.28)
gdb --version: GNU gdb (GDB) 10.1

What did you do?

I have a project, I want to do a coverage test, so I run:

go test -v -gcflags 'all=-N -l' -p 1 -cover -coverpkg all -coverprofile 1.out  ./...

go tool cover -html 1.out

And, I have gofmt the code ( reference to the suggestion from #30746)

What did you expect to see?

I want to see the result of testing coverage.

What did you see instead?

see the error:

cover: inconsistent NumStmt: changed from 1 to 2

[hitzhangjie]

After I change from -coverpkg all to -coverpkg $(go list ./... | sed 's/\n/,/g'), it works.

The test cases run, and cover profile 1.out is generated, and go tool cover -html 1.out works, too.
But the coverage totally wrong, it displays only func init() is covered.

[seankhliao]

duplicate of #45361 ?

[hitzhangjie]

@sean-jc Oh, yes.