[libcamera-devel] [PATCH] libcamera: pipeline: ipu3: Fix compilation on gcc 5 and 6

[Laurent Pinchart]

Commit 5e7c5d64a67f ("libcamera: ipu3: Do not unconditionally queue
buffers to CIO2") introduced usage of the std::queue default constructor
by using copy-list-initialization from {}. The default constructor was
explicit in C++11, which was fixed retroactively with a defect report
(http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0935r0.html).
gcc 5 and 6 are unfortunately affected, requiring explicit usage of the
constructor.

Fixes: 5e7c5d64a67f ("libcamera: ipu3: Do not unconditionally queue buffers to CIO2")
Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 src/libcamera/pipeline/ipu3/ipu3.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index b490a801a9c4..1e114ca7ed10 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -1532,7 +1532,8 @@ int CIO2Device::allocateBuffers()
 
 void CIO2Device::freeBuffers()
 {
-	availableBuffers_ = {};
+	/* The default std::queue constructor is explicit with gcc 5 and 6. */
+	availableBuffers_ = std::queue<FrameBuffer *>{};
 
 	buffers_.clear();
 
-- 
Regards,

Laurent Pinchart