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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-05-30 06:22:54 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-06-01 03:18:57 +0300
commitb84896c1289d2bb1b66540e5c35206bae67bf3b7 (patch)
tree4f568be13f4524d55623f2f4abee2c9724046957 /test/delayed_controls.cpp
parent19652e5028e92f8eb7ca989d754c1e394216fbb6 (diff)
libcamera: pipeline: ipu3: Fix incorrect bdsHeight calculation
When compiling with optimization, gcc 9 and newer throw an unitialized variable warning: ../../src/libcamera/pipeline/ipu3/imgu.cpp: In function ‘void libcamera::{anonymous}::calculateBDSHeight(libcamera::ImgUDevice::Pipe*, const libcamera::Size&, const libcamera::Size&, unsigned int, float)’: ../../src/libcamera/pipeline/ipu3/imgu.cpp:172:17: error: ‘bdsHeight’ may be used uninitialized in this function [-Werror=maybe-uninitialized] 172 | unsigned int bdsIntHeight = static_cast<unsigned int>(bdsHeight); Neither clang not gcc versions older than 9 complain. This seems to be a false positive. However, there's an obvious error in the code. The second while () loop in the first part of calculateBDSHeight() modifies the bdsHeight variable set by the first loop even if the second loop doesn't find a suitable height. This can result in an incorrect bdsHeight value. Fix this, which also gets rid of the compiler warning. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
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