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POOpenCV free(): invalid pointer:
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2013-06-30T10:35:50.937
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I am getting the next error while running an application that reads some data from files, extracts the features of an image and predicts a result using a set of pre-trained classifiers: <pre><code>> *** glibc detected *** ./SVMread: free(): invalid pointer: 0xbfeb2670 *** > ======= Backtrace: ========= /lib/i386-linux-gnu/libc.so.6(+0x75ee2)[0xb5fe8ee2] > /usr/lib/i386-linux-gnu/libstdc++.so.6(_ZdlPv+0x1f)[0xb61e451f] > ./SVMread(_ZN2cv17FlannBasedMatcherD0Ev+0x1c)[0x804b214] > ./SVMread[0x804ca96] ./SVMread[0x804c0e1] > ./SVMread(_ZN2cv3PtrINS_17DescriptorMatcherEED1Ev+0x11)[0x804b6e9] > ./SVMread[0x804a8cc] > /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb5f8c4d3] > ./SVMread[0x8049ef1] > ======= Memory map: ======== 08048000-08050000 r-xp 00000000 00:14 101213 /home/srt/OpenCV-2.4.2/samples/cpp/SVMread > 08050000-08051000 r--p 00007000 00:14 101213 > /home/srt/OpenCV-2.4.2/samples/cpp/SVMread 08051000-08052000 rw-p > 00008000 00:14 101213 /home/srt/OpenCV-2.4.2/samples/cpp/SVMread > ... </code></pre> I am thinking that the conflicting part is in one of the next sections of the code, but I really can't find a solution on the web nor in the OpenCV documentation. <pre><code> SurfDescriptorExtractor extractor1; Ptr<DescriptorExtractor> extractor = &extractor1; FlannBasedMatcher matcher1; Ptr<DescriptorMatcher> matcher = &matcher1; BOWImgDescriptorExtractor bowide(extractor,matcher); </code></pre> or in: <pre><code>CvFileStorage* storage = cvOpenFileStorage( "svm1.yml", 0, CV_STORAGE_READ ); const char * c; string clase; CvFileNode* cFN; for (unsigned int i = 0; i<Vclases.size(); i++) { clase = Vclases[i]; c = (clase).c_str(); cFN = cvGetFileNodeByName( storage , 0, c ); cout << "reading " << clase << endl; classes_classifiers[clase].read(storage, cFN ); } </code></pre> Edit: The valgrind output confirms that there is a problem in: <pre><code>CvFileStorage* storage = cvOpenFileStorage( "svm1.yml", 0, CV_STORAGE_READ ); </code></pre> Valgrind: <pre><code>> Conditional jump or move depends on uninitialised value(s) > ==23398== at 0x56585C0: ____strtod_l_internal (strtod_l.c:1659) > ==23398== by 0x5653FAE: strtod (strtod.c:70) > ==23398== by 0x41425B1: icv_strtod(CvFileStorage*, char*, char**) (in /usr/local/lib/libopencv_core.so.2.4.2) > ==23398== by 0x415875F: icvYMLParseValue(CvFileStorage*, char*, CvFileNode*, int, int) (in /usr/local/lib/libopencv_core.so.2.4.2) > ==23398== by 0x804A377: main (SVMread.cpp:64) > ==23398== Uninitialised value was created by a stack allocation > ==23398== at 0x56575E4: ____strtod_l_internal (strtod_l.c:424) </code></pre> I'm a newbie with pointers and memory allocation so any help will be appreciated. Thanks in advance.
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<c++><pointers><opencv><memory-leaks><runtime-error>
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OpenCV free(): invalid pointer:
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