PureBasic Forums - English

Posted: **Thu Mar 14, 2024 4:14 am**

Hello everyone,

My question today is about running a program compiled with PureBasic with valgrind to check if the program as memory leaks among other problems.

==25059== HEAP SUMMARY:
==25059== in use at exit: 4,272,043 bytes in 58,826 blocks
==25059== total heap usage: 981,301 allocs, 922,475 frees, 227,836,882 bytes allocated
==25059==
==25059== LEAK SUMMARY:
==25059== definitely lost: 29,952 bytes in 37 blocks
==25059== indirectly lost: 72,089 bytes in 2,958 blocks
==25059== possibly lost: 5,615 bytes in 54 blocks
==25059== still reachable: 3,929,187 bytes in 53,674 blocks
==25059== of which reachable via heuristic:
==25059== length64 : 6,104 bytes in 18 blocks
==25059== suppressed: 0 bytes in 0 blocks
==25059== Rerun with --leak-check=full to see details of leaked memory
==25059==
==25059== For lists of detected and suppressed errors, rerun with: -s
==25059== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)

Apparently I have some memory leaks somewhere in the program but I don't know how to find and correct them. When run valgrind with --leak-check=full I got many leaks coming from the external libraries I'm using, for example :

==25220== at 0x484582F: realloc (vg_replace_malloc.c:1437)
==25220== by 0x5ABF4D8: ??? (in /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.12.0)
==25220== by 0x5ABFC60: ??? (in /usr/lib/x86_64-linux-gnu/libfontconfig.so.1.12.0)
==25220== by 0x52B0523: ??? (in /usr/lib/x86_64-linux-gnu/libcairo.so.2.11600.0)
==25220== by 0x5182A48: ??? (in /usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0.5000.12)
==25220== by 0x5A90EFD: ??? (in /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0.5000.12)
==25220== by 0x51AA802: ??? (in /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0.5000.12)
==25220== by 0x51BA83D: ??? (in /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0.5000.12)
==25220== by 0x51BCEFD: ??? (in /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0.5000.12)
==25220== by 0x4B467A3: ??? (in /usr/lib/x86_64-linux-gnu/libgtk-3.so.0.2406.32)
==25220== by 0x4A7D5E0: ??? (in /usr/lib/x86_64-linux-gnu/libgtk-3.so.0.2406.32)
==25220== by 0x4A82177: ??? (in /usr/lib/x86_64-linux-gnu/libgtk-3.so.0.2406.32)

Is this kind of problems I should worry about ?

Thanks in advance.
StarBootics

Posted: **Thu Mar 14, 2024 9:20 am**

Without Linux code we can't say much.
Do you use the GTK API? If so, you have to make sure that you release the results correctly.

Posted: **Thu Mar 14, 2024 10:13 am**

Be sure to compile with the '-ds' flag to have the debug symbols in your final exe

Posted: **Thu Mar 14, 2024 11:00 am**

mk-soft wrote: Thu Mar 14, 2024 9:20 am Without Linux code we can't say much.
Do you use the GTK API? If so, you have to make sure that you release the results correctly.

Yes, I'm using GTK API and I'm also using cairo, pango and pangocairo API to create a custom widget that work like Trello board with cards. I will review the code one more time but the example of code are not very concise about how to work with them. One thing I can do is to upload the entire source code of the program (under 9 800 lines) or I can make a simplified version of the program but this will take some time.

Fred wrote: Thu Mar 14, 2024 10:13 am Be sure to compile with the '-ds' flag to have the debug symbols in your final exe

It would be nice if we can set compiler flags via the compiler option window instead of compiling via the command line terminal, I will give it a try.

Thanks again.
StarBootics

Posted: **Thu Mar 14, 2024 2:40 pm**

GTK

- g_value_unset
-g_error_free
- g_list_free
- g_object_unref

If not const gchar
- g_free

and more ...

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