[fpc-pascal] Understanding valgrind logs

[ik]

Thanks
Ido

http://ik.homelinux.org/


On Sun, Nov 8, 2009 at 3:59 PM, Jonas Maebe <jonas.maebe at elis.ugent.be>wrote:

> ik wrote on Sun, 08 Nov 2009:
>
>
>  Hello all,
>> I'm trying to figure out valgrind's log about a program I wrote in Pascal
>> using FPC.
>>
>> I have a lot of the following messages:\
>> ==30348== Mismatched free() / delete / delete []
>> ==30348==    at 0x4C21A18: free (in
>> /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
>>
> [snip]
>
>  ==30348==  Address 0xd2892b0 is 0 bytes inside a block of size 32 alloc'd
>> ==30348==    at 0x4C2261C: operator new(unsigned long) (in
>> /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
>>
> [snip]
>
>  Not even one report about my own code, buy all about shard libraries.
>> Does anyone know what it means exactly ?
>>
>
> It says that this library is calling free() on a memory block that was
> allocated with new(). This is an error, because they should be calling
> delete() (it's sort of like calling freemem(x) on pointer to an object in
> Pascal, rather than dispose(x,done)).
>
> There is probably nothing you can do about it in your code, since it's all
> inside the C++ library.
>
>
> Jonas
>
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