FMX.Browser.Linux - Segmentation fault (11)

[Pavel B]

I receive Segmentation fault (11) or empty URL (TLinuxWebBrowserService(Data).FURL)

procedure FmuxLoadFinished(Data: Pointer); cdecl;
begin
TLinuxWebBrowserService(Data).FURL := FmuxWebViewGetUrl(TLinuxWebBrowserService(Data).FWebView); ← here
TLinuxWebBrowserService(Data).FWebControl.FinishLoading;
end;

It looks like FWebView is allways 0x3 for any project

{<System.TInterfacedObject> = {<System.TObject> = {}, FRefCount = -11056}, FURL = '', FWebControl = 0x27d57e0, FWebView = 0x3}

Just drop on a form a TWebBrowser component, one button and navigate on click for example to https://www.google.com

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Thank you
Pavel

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[Eugene Kryukov]

What FmxLinux version ? What Delphi version ?

[Pavel B]

Sydney 10.4.1

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Also some hints/warnings

[DCC Warning] FMX.Platform.Linux.pas(62): W1000 Symbol 'MessageDialog' is deprecated: 'Use FMX.DialogService methods'
[DCC Warning] FMX.Platform.Linux.pas(62): W1000 Symbol 'MessageDialog' is deprecated: 'Use FMX.DialogService methods'
[DCC Warning] FMX.Platform.Linux.pas(62): W1000 Symbol 'InputQuery' is deprecated: 'Use FMX.DialogService methods'
[DCC Warning] FMX.Platform.Linux.pas(62): W1000 Symbol 'InputQuery' is deprecated: 'Use FMX.DialogService methods'
[DCC Warning] FMX.Platform.Linux.pas(62): W1000 Symbol 'GetWindowScale' is deprecated
[DCC Warning] FMX.Platform.Linux.pas(212): W1000 Symbol 'GetWindowScale' is deprecated
[DCC Hint] FMX.Platform.Linux.pas(366): H2077 Value assigned to 'Handled' never used
[DCC Warning] FMX.Media.Linux.pas(108): W1020 Constructing instance of 'TLinuxVideoCaptureDevice' containing abstract method 'TVideoCaptureDevice.GetCaptureSetting'
[DCC Warning] FMX.Media.Linux.pas(108): W1020 Constructing instance of 'TLinuxVideoCaptureDevice' containing abstract method 'TVideoCaptureDevice.DoSetCaptureSetting'
[DCC Warning] FMX.Media.Linux.pas(108): W1020 Constructing instance of 'TLinuxVideoCaptureDevice' containing abstract method 'TVideoCaptureDevice.DoGetAvailableCaptureSettings'

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[Eugene Kryukov]

What version of FmxLinux ? Is it from fmxlinux.com or from GetIt ?

Actually, we can’t reproduce that. Everything works fine.

[Pavel B]

GetIt

const
ResName = 'fmux';
LibName = 'libfmux';
LibVer = '1.51';
LibRev = '$Rev: 698 $';

Ubuntu 20.4 (target) + Windows 10

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[Eugene Kryukov]

Checked GetIt version - works fine.

Can you please do following on your Linux machine:

1. Delete ~/.fmxlinux folder
2. Run your application
3. Check ~/.fmxlinux folder - what FmxLinux runtime lib version inside (should be libfmux-1.51.so)

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[Pavel B]

Sorry for the delay, I have recorded a small video 1 image = 1000 words

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[Eugene Kryukov]

That really weird. It works fine and we don’t get any other similar reports. Looks you the problem in your side - we added new property to TLinuxWebBrowserService and that why FWebView property may wrong. So, looks like your app uses wrong dcu or sources.

Did you do any changes in our sources ?

Can you try WebBrowser with new project ?

[Pavel B]

After spending A LOT OF TIME I have found that it depends on URL
for the first case when URL was url:=url+'?'+System.string.Join('&',parts1); i have received Segmentation fault (11)
if I have doubled the parameters url:=url+'?'+System.string.Join('&',parts1)+'&'+System.string.Join('&',parts1);
I do not receive any error. In fact there is only one parameter that make problems “redirect_uri=http%3A%2F%2F127.0.0.1%3A9888%2F”
if I put this paramater 2 times in URL I do not receive Segmentation fault (11)

I have no idea why.

The app is cross platform and only in LINUX has this problem. ON MacOS64, Android, Windows its OK

Thank you.