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Cleaner fix to ensure 32-bit XCB events

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This fix still satisfies Valgrind and is cleaner than the approach
at 19c41bd0: instead of using calloc we now use the C++11 specifier
alignas. For more info, see the following ML thread:
https://www.mail-archive.com/search?l=mid&q=20200219024908.5n4x4osni55gylo3%40tallinn
This commit is contained in:
Enrico Forestieri 2020-02-25 12:37:51 +01:00
parent 8977296078
commit f28334ac8b
1 changed files with 7 additions and 1 deletions
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8
src/frontends/qt/GuiApplication.cpp
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@ -3352,7 +3352,13 @@ bool GuiApplication::nativeEventFilter(const QByteArray & eventType,
// not doing that, maybe because of our
// "persistent selection" implementation
// (see comments in GuiSelection.cpp).
xcb_selection_notify_event_t nev;
// It is expected that every X11 event is
// 32 bytes long, even if not all 32 bytes are
// needed. See:
// https://www.x.org/releases/current/doc/man/man3/xcb_send_event.3.xhtml
struct alignas(32) padded_event
: xcb_selection_notify_event_t {};
padded_event nev = {};
nev.response_type = XCB_SELECTION_NOTIFY;
nev.requestor = srev->requestor;
nev.selection = srev->selection;