GMail attachment issue

When sending a piped file, Gmail closes the pipe and sends a corrupted file instead.

Google issue tracker

~~https://issuetracker.google.com/issues/235374656~~ - closed as advice was it was the wrong place for this issue https://issuetracker.google.com/issues/235489985

Example built APK

Steps to reproduce

Install this app.
Install and setup GMail with an email account.
Open this app and tap "Send File" button.
Chose to use GMail to send the file if multiple apps available.
Send the email containing the file.

Video

Expected results

The email is send containing the image of the android robot

Actual results

Using com.google.android.gm_2022.04.03.445234996.Release-63212521.apk or earlier version

The email successfully contains the image correctly.

Example

EML file

From 63212521.eml

APK file

This APK should not be trusted, they are taken from 3rd party source so should not be used with secure Google accounts. com.google.android.gm_2022.04.03.445234996.Release-63212521.apk

Using com.google.android.gm_2022.04.17.446880209.Release-63240686.apk or later version

The email contains a corrupted file in place of the image.

Example

EML file

From 63240686.eml

APK file

This APK should not be trusted, they are taken from 3rd party source so should not be used with secure Google accounts. com.google.android.gm_2022.04.17.446880209.Release-63240686.apk