gen2brain
Raygui -Access violation crash in GuiTextBox on Windows - Exception 0xc0000005
Application crashes with access violation when calling gui.TextBox() from raylib-go/raygui on Windows.
Exception 0xc0000005 0x0 0xc001b94000 0x7bed93 PC=0x7bed93 signal arrived during external code execution
github.com/gen2brain/raylib-go/raygui._Cfunc_GuiTextBox({0x44070000, 0x43b40000, 0x43480000, 0x42700000}, 0xc001b93ff8, 0x40, 0x0) _cgo_gotypes.go:835 +0x50 github.com/gen2brain/raylib-go/raygui.TextBox({0x0?, 0x0?, 0xecd400?, 0x0?}, 0xc0001feab0, 0x40, 0x0) C:/Users/Aleksander/go/pkg/mod/github.com/gen2brain/raylib-go/[email protected]/raygui.go:980 +0x158
gui.TextBox(bounds, &textString, 64, true)
Issue: The crash occurs consistently when calling gui.TextBox(). This appears to be a CGO-related issue where the Go garbage collector may be moving string memory while C code is accessing it, causing an invalid memory access.
Expected Behavior: TextBox should render without crashing.
Actual Behavior:
Application terminates with access violation exception.
Hey @janicaleksander ,
can you please share a code snippet or example to reproduce the error?
w.createUserScene.emailInput = InputField{ bounds: rl.NewRectangle( float32(w.width/2)-100, float32(w.height/2-300), 200, 60, ), text: "", focus: false, textSize: 64, }
gui.TextBox(w.createUserScene.emailInput.bounds, &w.createUserScene.emailInput.text, w.createUserScene.emailInput.textSize, w.createUserScene.emailInput.focus)
This is the tricky part, because this error occurred twice in a row, and then I tried to do it again and this time it didn't happen.
@janicaleksander, Occasional crashes suggest you are doing more in your code than what is shown. You are not using Go routines, are you?
If not, as you mentioned, it's possible that GC is cleaning your objects, but from the C side, they're still needed. You can test that by simply adding runtime.KeepAlive(yourobject) at the end, or after the part where it is crashing, to force GC not to clean it.
Edit: Or just try with GOGC=off.
package Application
import (
gui "github.com/gen2brain/raylib-go/raygui"
rl "github.com/gen2brain/raylib-go/raylib"
"github.com/janicaleksander/bcs/Proto"
"github.com/janicaleksander/bcs/User"
"strconv"
)
type CreateUserScene struct {
emailInput InputField
passwordInput InputField
rePasswordInput InputField
ruleLevelInput InputField
nameInput InputField
surnameInput InputField
isError bool
errorMessage string
acceptButton Button
isAccept bool
acceptMessage string
//maybe sobe checkbox
}
func (s *CreateUserScene) Reset() {
s.isError = false
s.errorMessage = ""
s.isAccept = false
s.acceptMessage = ""
}
func (w *Window) createUserSceneSetup() {
w.createUserScene.Reset()
w.createUserScene.emailInput = InputField{
bounds: rl.NewRectangle(
float32(w.width/2)-100,
float32(w.height/2-300),
200,
60,
),
text: "",
focus: false,
textSize: 64,
}
w.createUserScene.passwordInput = InputField{
bounds: rl.NewRectangle(
float32(w.width/2)-100,
float32(w.height/2)-200,
200,
60),
text: "",
focus: false,
textSize: 64,
}
w.createUserScene.rePasswordInput = InputField{
bounds: rl.NewRectangle(
float32(w.width/2)-100,
float32(w.height/2)-100,
200,
60),
text: "",
focus: false,
textSize: 64,
}
w.createUserScene.ruleLevelInput = InputField{
bounds: rl.NewRectangle(
float32(w.width/2)-100,
float32(w.height/2),
200,
60,
),
text: "",
focus: false,
textSize: 64,
}
w.createUserScene.nameInput = InputField{
bounds: rl.NewRectangle(
float32(w.width/2)-100,
float32(w.height/2)+100,
200,
60),
text: "",
focus: false,
textSize: 64,
}
w.createUserScene.surnameInput = InputField{
bounds: rl.NewRectangle(
float32(w.width/2)-100,
float32(w.height/2)+200,
200,
60,
),
text: "",
focus: false,
textSize: 64,
}
w.createUserScene.acceptButton = Button{
bounds: rl.NewRectangle(
float32(w.width/2)-100,
float32(w.height/2+280),
200,
60),
text: "ACCEPT",
}
}
func (w *Window) updateCreateUserState() {
if gui.Button(w.createUserScene.acceptButton.bounds, w.createUserScene.acceptButton.text) {
w.createUserScene.Reset()
email := w.createUserScene.emailInput.text
password := w.createUserScene.passwordInput.text
rePassword := w.createUserScene.rePasswordInput.text
ruleLevel := w.createUserScene.ruleLevelInput.text
name := w.createUserScene.nameInput.text
surname := w.createUserScene.surnameInput.text
//check input
if len(email) <= 0 || len(password) <= 0 ||
len(rePassword) <= 0 || len(ruleLevel) <= 0 ||
len(name) <= 0 || len(surname) <= 0 {
w.createUserScene.isError = true
w.createUserScene.errorMessage = "Zero length error"
return
}
lvl, err := strconv.Atoi(ruleLevel)
// TODO curr max lvl
if lvl > 5 || err != nil {
w.createUserScene.isError = true
w.createUserScene.errorMessage = "Bad ruleLVL input"
return
}
newUser := User.NewUser(email, password, int32(lvl), name, surname)
resp := w.ctx.Request(w.serverPID, &Proto.CreateUser{User: newUser}, WaitTime)
val, err := resp.Result()
if err != nil {
w.createUserScene.isError = true
w.createUserScene.errorMessage = "Actor ctx error"
}
if _, ok := val.(*Proto.AcceptCreateUser); ok {
w.createUserScene.isAccept = true
w.createUserScene.acceptMessage = "Created successfully"
w.createUserScene.emailInput.text = ""
w.createUserScene.passwordInput.text = ""
w.createUserScene.rePasswordInput.text = ""
w.createUserScene.ruleLevelInput.text = ""
w.createUserScene.nameInput.text = ""
w.createUserScene.surnameInput.text = ""
}
if _, ok := val.(*Proto.DenyCreateUser); ok {
w.createUserScene.isError = true
w.createUserScene.errorMessage = "DB deny!"
}
}
}
func (w *Window) renderCreateUserState() {
//error
if w.createUserScene.isError {
rl.DrawText(w.createUserScene.errorMessage, 0, 0, 32, rl.Red)
}
if w.createUserScene.isAccept {
rl.DrawText(w.createUserScene.acceptMessage, 0, 0, 32, rl.Green)
}
if rl.IsMouseButtonPressed(rl.MouseButtonLeft) {
mousePos := rl.GetMousePosition()
w.createUserScene.emailInput.focus = false
w.createUserScene.passwordInput.focus = false
w.createUserScene.rePasswordInput.focus = false
w.createUserScene.ruleLevelInput.focus = false
w.createUserScene.nameInput.focus = false
w.createUserScene.surnameInput.focus = false
if rl.CheckCollisionPointRec(mousePos, w.createUserScene.emailInput.bounds) {
w.createUserScene.emailInput.focus = true
}
if rl.CheckCollisionPointRec(mousePos, w.createUserScene.passwordInput.bounds) {
w.createUserScene.passwordInput.focus = true
}
if rl.CheckCollisionPointRec(mousePos, w.createUserScene.rePasswordInput.bounds) {
w.createUserScene.rePasswordInput.focus = true
}
if rl.CheckCollisionPointRec(mousePos, w.createUserScene.ruleLevelInput.bounds) {
w.createUserScene.ruleLevelInput.focus = true
}
if rl.CheckCollisionPointRec(mousePos, w.createUserScene.nameInput.bounds) {
w.createUserScene.nameInput.focus = true
}
if rl.CheckCollisionPointRec(mousePos, w.createUserScene.surnameInput.bounds) {
w.createUserScene.surnameInput.focus = true
}
}
gui.TextBox(w.createUserScene.emailInput.bounds, &w.createUserScene.emailInput.text, w.createUserScene.emailInput.textSize, w.createUserScene.emailInput.focus)
gui.TextBox(w.createUserScene.passwordInput.bounds, &w.createUserScene.passwordInput.text, w.createUserScene.passwordInput.textSize, w.createUserScene.passwordInput.focus)
gui.TextBox(w.createUserScene.rePasswordInput.bounds, &w.createUserScene.rePasswordInput.text, w.createUserScene.rePasswordInput.textSize, w.createUserScene.rePasswordInput.focus)
gui.TextBox(w.createUserScene.ruleLevelInput.bounds, &w.createUserScene.ruleLevelInput.text, w.createUserScene.ruleLevelInput.textSize, w.createUserScene.ruleLevelInput.focus)
gui.TextBox(w.createUserScene.nameInput.bounds, &w.createUserScene.nameInput.text, w.createUserScene.nameInput.textSize, w.createUserScene.nameInput.focus)
gui.TextBox(w.createUserScene.surnameInput.bounds, &w.createUserScene.surnameInput.text, w.createUserScene.surnameInput.textSize, w.createUserScene.surnameInput.focus)
}