[Webkit-unassigned] [Bug 186206] [GTK] WebKit::CoordinatedBackingStoreTile::setBackBuffer(): WebKitWebProcess killed by SIGSEGV (ASSERTION FAILED: it != m_tiles.end())

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186206

Michael Catanzaro <mcatanzaro at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[GTK]                       |[GTK]
                   |WebKit::CoordinatedBackingS |WebKit::CoordinatedBackingS
                   |toreTile::setBackBuffer():  |toreTile::setBackBuffer():
                   |WebKitWebProcess killed by  |WebKitWebProcess killed by
                   |SIGSEGV                     |SIGSEGV (ASSERTION FAILED:
                   |                            |it != m_tiles.end())

--- Comment #13 from Michael Catanzaro <mcatanzaro at igalia.com> ---
Philippe and Fujii both hit this today in debug builds. In debug builds, instead of crashing in CoordinatedBackingStoreTile::setBackBuffer, it asserts one frame higher, in CoordinatedBackingStoreTile::updateTile:

ASSERTION FAILED: it != m_tiles.end()

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