Hitting memory limits for malloc() at about 1.7GB?

[Skywalker]

So it's looking like this is probably a 32 bit compiler issue. Thanks.

Do one more thing - what happens if you use the new operator instead of malloc()?

It also crashes, though oddly after the crash I now get the message "This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information.", while I got no message with malloc().

If you have downloaded Qt SDK then I suppose that you have MinGW - I don't know this one, but I think it is not generating 64-bit code (by default).

Yes I have the SDK. I've read that Qt is 64 bit since 3.3 - don't really get how that would help with a 32 bit compiler?

Anyway, what 64 bit compilers is Qt compatible with? And how do I change the compiler Qt uses by default?

[wysota]

I've read that Qt is 64 bit since 3.3 - don't really get how that would help with a 32 bit compiler?

It means it can be compiled with a 64 bit compiler.

Anyway, what 64 bit compilers is Qt compatible with?

MinGW has a 64 bit version.

And how do I change the compiler Qt uses by default?

You use the proper QMAKESPEC directory and make sure paths are setup correctly.

[Skywalker]

It was indeed a 32 bit compiler issue - I was able to successfully run a test program compiled with MinGW 64.

I'm not quite sure how to properly set up Qt to work with MinGW64, but I'll make a different thread for that.

Thank you very much