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authorBarnabás Pőcze <pobrn@protonmail.com>2024-05-27 13:24:29 +0000
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-05-27 23:53:59 +0300
commitc79fa47aac9b38865dab5e9f29030903bf460c46 (patch)
treefb6c1cbdb4da74ca9e29c9bd642744f2a7ea161e /include/linux
parent807119d1e0d27ffe50b10ccfc6ee7bf64ea03e74 (diff)
android: camera_capabilities: Fix GCC 14 warning
GCC 14 thinks `rects` is a "possibly dangling reference to a temporary": /libcamera/src/android/camera_capabilities.cpp: In member function ‘int CameraCapabilities::initializeStaticMetadata()’: /libcamera/src/android/camera_capabilities.cpp:1084:46: error: possibly dangling reference to a temporary [-Werror=dangling-reference] 1084 | const Span<const Rectangle>& rects = | ^~~~~ /libcamera/src/android/camera_capabilities.cpp:1085:83: note: the temporary was destroyed at the end of the full expression ‘(& properties)->libcamera::ControlList::get<libcamera::Span<const libcamera::Rectangle> >(libcamera::properties::PixelArrayActiveAreas).std::optional<libcamera::Span<const libcamera::Rectangle> >::value_or<libcamera::Span<const libcamera::Rectangle> >(libcamera::Span<const libcamera::Rectangle>())’ 1085 | properties.get(properties::PixelArrayActiveAreas).value_or(Span<const Rectangle>{}); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ The return value of `value_or()` is indeed a temporary, but binding it to a reference extends its lifetime. Avoid the warning by not using a reference; this does not make much difference since `value_or()` does not return a reference. Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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