OK it is logged.

Jonas Maebe wrote:

On 05 Aug 2009, at 13:55, Wimpie Nortje wrote:

program memleak;

{$mode objfpc}{$H+}

uses
cthreads;

begin
end.

If I run the program using valgrind I get the following output:
==1944== Invalid free() / delete / delete[] ==1944== at 0x4025DFA: free (vg_replace_malloc.c:323) ==1944== by 0x4171664: (within /lib/tls/i686/cmov/libc-2.9.so)
==1944==    by 0x4020422: _vgnU_freeres (vg_preloaded.c:60)
==1944==    by 0x40E5B23: _Exit (in /lib/tls/i686/cmov/libc-2.9.so)
==1944== by 0x405C77C: (below main) (in /lib/tls/i686/cmov/libc-2.9.so) ==1944== Address 0xffffffff is not stack'd, malloc'd or (recently) free'd

This invalid free is probably the reason for the memory leak.

It even happens for this program:

{$linklib c}
begin
end.

There is probably some error in FPC's startup code (the code in fpc/rtl/linux/i386/cprt0.as) which doesn't initialise some libc pointer. You should indeed report a bug about this.

To Graeme and Michael: heaptrc is useless/irrelevant to analyse memory leaks reported inside libc. Such errors can always be due to wrong usage of the C library from within FPC code.


Jonas
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