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?
yes, any release
What operating system and processor architecture are you using (go env)?
go env Output
$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/usr/local/google/home/tenox/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/usr/local/google/home/tenox/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/lib/google-golang"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/google-golang/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
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 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build197159774=/tmp/go-build -gno-record-gcc-switches"
What did you do?
Create a simple gif image:
package main
import (
"image"
"image/color"
"image/gif"
"os"
"fmt"
)
func main() {
g, _ := os.Create("go.gif")
defer g.Close()
p := []color.Color{color.White, color.Black}
r := image.Rect(0,0,100,100)
i := image.NewPaletted(r, p)
for x:=20; x<40; x++ {
for y:=20; y<40; y++ {
fmt.Printf("%d %d", x, y)
i.SetColorIndex(x,y, 1)
}
}
gif.Encode(g, i, nil)
}
What did you expect to see?
Expected to open in older image viewers, editors and browsers.
What did you see instead?
A number of old browsers, image viewers and editors report generated gif image as corrupted or display it mangled. For example xv image viewer, https://en.wikipedia.org/wiki/Xv_(software) says the file is turncated. OmniWeb browser (v2.x and v3.x) crashes. Most graphical software on SGI IRIX reports it corrupted.
What version of Go are you using (
go version)?Does this issue reproduce with the latest release?
yes, any release
What operating system and processor architecture are you using (
go env)?go envOutputWhat did you do?
Create a simple gif image:
package main import ( "image" "image/color" "image/gif" "os" "fmt" ) func main() { g, _ := os.Create("go.gif") defer g.Close() p := []color.Color{color.White, color.Black} r := image.Rect(0,0,100,100) i := image.NewPaletted(r, p) for x:=20; x<40; x++ { for y:=20; y<40; y++ { fmt.Printf("%d %d", x, y) i.SetColorIndex(x,y, 1) } } gif.Encode(g, i, nil) }What did you expect to see?
Expected to open in older image viewers, editors and browsers.
What did you see instead?
A number of old browsers, image viewers and editors report generated gif image as corrupted or display it mangled. For example xv image viewer, https://en.wikipedia.org/wiki/Xv_(software) says the file is turncated. OmniWeb browser (v2.x and v3.x) crashes. Most graphical software on SGI IRIX reports it corrupted.