[Bug c++/107532] [13 Regression] -Werror=dangling-reference false positives in libcamera-0.0.1

[mpolacek at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107532

--- Comment #15 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Hmm, so it's this line

const FrameMetadata::Plane &meta = buffer->metadata().planes()[i];

and we complain because we have

libcamera::Span<const libcamera::FrameMetadata::Plane>::operator[]
(&TARGET_EXPR <D.153699, libcamera::FrameMetadata::planes ((const struct
FrameMetadata *) libcamera::FrameBuffer::metadata (NON_LVALUE_EXPR
<VIEW_CONVERT_EXPR<struct FrameBuffer *>(buffer)>))>, (size_type)
VIEW_CONVERT_EXPR<unsigned int>(i))

and the argument to operator[] is a temporary of type Span.  Span is not a
reference wrapper class so I *think* this is a valid warning.