C 和 OpenCV 内存泄漏

Question

我有内存泄漏的问题。在这个简单的程序中:

#include <stdlib.h>
#include <stdio.h>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"

int main() {
    CvMat *src;
    src = cvLoadImageM("p1.jpg", CV_LOAD_IMAGE_GRAYSCALE);
    cvSaveImage("p2.bmp", src, 0);  
    cvReleaseMat(&src);
    return 0;
}

根据 valgrind，有 7 处泄漏:

==10478== HEAP SUMMARY:
==10478==     in use at exit: 10,464 bytes in 7 blocks
==10478==   total heap usage: 154 allocs, 147 frees, 2,908,450 bytes allocated
==10478== 
==10478== LEAK SUMMARY:
==10478==    definitely lost: 0 bytes in 0 blocks
==10478==    indirectly lost: 0 bytes in 0 blocks
==10478==      possibly lost: 0 bytes in 0 blocks
==10478==    still reachable: 10,464 bytes in 7 blocks
==10478==         suppressed: 0 bytes in 0 blocks
==10478== Rerun with --leak-check=full to see details of leaked memory
==10478== 
==10478== For counts of detected and suppressed errors, rerun with: -v
==10478== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 2 from 2)

谁能告诉我如何正确释放内存？感谢您的建议。

Answer 1

@user4815162342 可能是对的。尽管我建议您迁移到新的 C++ OpenCv cv::Mat，通过它可以自动进行内存管理。