encoding/json Unmarshals invalid json successfully

[rskumar]

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

$ go version

go version go1.12.5 linux/amd64

Does this issue reproduce with the latest release?

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

go env Output

$ go env

GOARCH="amd64"
GOBIN=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOROOT="/usr/local/go"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
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-build191036311=/tmp/go-build -gno-record-gcc-switches"

What did you do?

https://play.golang.org/p/ELkurW4YV8x

What did you expect to see?

Error if json is not valid.

What did you see instead?

No error

[zeast]

I don't think you understand the usage of json.Decoder. json.Decoder reads the next JSON-encoded value from its input and stores it in the value pointed to by v.
you can see https://play.golang.org/p/xj4l9fkWPQ2 and https://play.golang.org/p/vdGLVq5rfu_R

[agnivade]

What @zeast said. I will close this as the issue has been resolved. If you have further questions, feel free to ask it in any of these forums below:

• Stack Overflow with questions tagged "go"

• The Go Forum, a web-based forum

• Gophers Slack, use the invite app for access. The #general channel is a good starting point.

• Go Community on Hashnode with questions and posts tagged with "go"

• The golang-nuts mailing list

• IRC channel #go-nuts on Freenode

Thanks

[rskumar]

Got it, thanks. I had different understanding, what I read from a library code.