Legacy ImageMagick Discussions Archive

Some time ago, I posted about a bug that, according to magick on 29-5-2012 has been corrected. As of today, that bug is still present in the MacPorts release.

Here is a minimal example:

$ port list ImageMagick
ImageMagick @6.7.8-3 graphics/ImageMagick
$ wget http://www.imagemagick.org/image/logo.jpg
...
$ identify logo.jpg
$ logo.jpg JPEG 123x118 123x118+0+0 8-bit DirectClass 16.2KB 0.000u 0:00.000
$ cat minimal.cxx

Code: Select all

#include <iostream>
#include <Magick++.h>

using namespace std;
using namespace Magick;

int main() {
try {
Image sourceImage("logo.jpg");
Image newImage(sourceImage);
newImage.zoom("50x");
newImage.write("newlogo.jpg");
} catch (Error &e) {
cerr << e.what() << '\n';
} catch (...) {
cerr << "Unknown exception catched\n";
}
}

$ g++ `Magick++-config --cppflags --cxxflags --ldflags --libs` -o minimal minimal.cxx
$ ./minimal
minimal(18180) malloc: *** error for object 0xb00007fff48c14c7: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Abort trap: 6
$

Unfortunately we cannot reproduce the problem. Post the results of

gdb ./minimal
run
where

The stack trace may help trace the double free.

Unluckily, the program when executed under the debugger runs to its normal end without any error. There are a lot of warnings about object files and debug informations missing (obviously), then the program exits normally writing the output file 'newlogo.jpg' correctly scaled. Setting a breakpoint in malloc_error_break, that procedure is never reached. However, running the executable directly without the debugger leads to 'pointer being freed was not allocated' and to abort (no output file).

Now, with ImageMagick 6.7.9-0 released by MacPorts, my problems are solved. Thank you all!

Legacy ImageMagick Discussions Archive

Again: pointer being freed was not allocated

Again: pointer being freed was not allocated

Re: Again: pointer being freed was not allocated

Re: Again: pointer being freed was not allocated

Re: Again: pointer being freed was not allocated