QPrinter reporting (false positive?) memory leaks

kennyb

Using windows, visual studio 2022, a minimal program like:

int WINAPI CALLBACK WinMain( HINSTANCE hInstance , HINSTANCE hPrevInstance , LPSTR lpCmdLine , int nShowCmd )
{
    _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
    QApplication app( __argc , __argv );
    QPrinter printer( QPrinter::HighResolution );
    return 0;
}

reports several leaks:

{2340} normal block at 0x0000022AF0341100, 66 bytes long.
 Data: <                > 01 00 00 00 00 00 00 00 06 00 00 00 00 00 00 00 
{2237} normal block at 0x0000022AEE055BA0, 16 bytes long.
 Data: <                > 01 00 00 00 FF FF FF FF CD CD CD CD CD CD CD CD 
{2236} normal block at 0x0000022AEE02A0E0, 120 bytes long.
 Data: <hH       `  *   > 68 48 C8 12 FB 7F 00 00 F0 60 05 EE 2A 02 00 00 
{2235} normal block at 0x0000022AEE0560F0, 16 bytes long.
 Data: <x @"        *   > 78 09 40 22 FB 7F 00 00 E0 A0 02 EE 2A 02 00 00 
{192} normal block at 0x0000022AEDFE08B0, 216 bytes long.
 Data: < m       t  *   > D0 6D D6 12 FB 7F 00 00 C0 74 00 EE 2A 02 00 00 
{191} normal block at 0x0000022AEE0074C0, 16 bytes long.
 Data: < m          *   > F0 6D D6 12 FB 7F 00 00 B0 08 FE ED 2A 02 00 00 
{190} normal block at 0x0000022AEDFE6040, 152 bytes long.
 Data: <                > 01 00 00 00 00 00 00 00 00 00 00 00 CD CD CD CD

I tried for a bit to track those down, but it's pretty deep in the Qt code and I kind of give up.

These do not multiply when creating additional QPrinter objects, so it seems they are allocated once in some globals. It doesn't sound like a huge problem, but with leak reporter going off after every run it's becoming extremely easy to miss any actual leaks.

Can I do something about it? To force clean QPrinter related globals or something along those lines?

Thanks!