regexp: regexp.Compile() compile invalid regexp

[felipeweb]

Please answer these questions before submitting your issue. Thanks!

What did you do?

match string with this invalid regexp /files/instance/contas/export/*
https://play.golang.org/p/IY62eQqTKX

What did you expect to see?

err != nil and match == false

What did you see instead?

err == nil and match == true

System details

go version go1.8.3 darwin/amd64
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/felipeweb/Code/go"
GORACE=""
GOROOT="/usr/local/Cellar/go/1.8.3/libexec"
GOTOOLDIR="/usr/local/Cellar/go/1.8.3/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/3c/3d8vk1ls4gggp0mq77yn19qm0000gn/T/go-build980377668=/tmp/go-build -gno-record-gcc-switches -fno-common"
CXX="clang++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
GOROOT/bin/go version: go version go1.8.3 darwin/amd64
GOROOT/bin/go tool compile -V: compile version go1.8.3 X:framepointer
uname -v: Darwin Kernel Version 16.7.0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64
ProductName:	Mac OS X
ProductVersion:	10.12.6
BuildVersion:	16G29
lldb --version: lldb-370.0.37
  Swift-3.1

[dcheney-atlassian]

This isn't an invalid regex, https://play.golang.org/p/VgCwQDuHeN

https://regex101.com/r/tfD68u/1

[dsnet]

This is working as intended since /* literally means to match zero-or more / characters.