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

$ go version
go version go1.14.6 linux/amd64

Does this issue reproduce with the latest release?

Yes，with the latest release go1.14.6

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

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN="/home/tanhongfei/me/workspace/src/go/bin"
GOCACHE="/home/tanhongfei/.cache/go-build"
GOENV="/home/tanhongfei/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/tanhongfei/me/workspace/src/go:/home/tanhongfei/me/workspace/go/src/k8s.io/kubernetes/staging"
GOPRIVATE=""
GOPROXY="https://goproxy.cn/"
GOROOT="/home/tanhongfei/me/software/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/tanhongfei/me/software/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build390604943=/tmp/go-build"

What did you do?

1. generate ssa.html file with command env GOSSAFUNC=test go build main.go for the following code：

package main
import (
    "fmt"
)
func test() {
    fmt.Println("hello, world!")
}
func main() {
    test()
}

2. remove ssa.html

3. run env GOSSAFUNC=test go build main.go again

extra infomation：
env GOSSAFUNC=test go run/install main.go has the same problem.
env GOSSAFUNC=test go build/run/install -a main.go will work correctly with "-a" flag
env GOSSAFUNC=test go tool compile main.go will work correctly
I guess it is related to the cache mechanism of "go" command, using "go tool compile" or with "-a" flag(force rebuild) will work correctly.

What did you expect to see?

generate ssa.html file again in the current directory

What did you see instead?

output with the following message, but no ssa.html file is generated in the current directory

# command-line-arguments
dumped SSA to ./ssa.html