Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: qtubuntu (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1580118
Title:
GLContext: if creating a context fails, deleting it causes crash
Status in qtubuntu package in Ubuntu:
Confirmed
Bug description:
See here:
http://paste.ubuntu.com/16343869/
this is the relevant code from qsgthreadedrendererloop.cpp:
if (!w->thread->gl) {
w->thread->gl = new QOpenGLContext();
if (qt_gl_global_share_context())
w->thread->gl->setShareContext(qt_gl_global_share_context());
w->thread->gl->setFormat(w->window->requestedFormat());
w->thread->gl->setScreen(w->window->screen());
if (!w->thread->gl->create()) {
const bool isEs = w->thread->gl->isOpenGLES();
delete w->thread->gl;
w->thread->gl = 0;
handleContextCreationFailure(w->window, isEs);
return;
}
Qt is creating a GL context object, but creation fails. In cleaning up,
QtUbuntu crashes as it's tries to release an invalid context.
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