run-time problems due to migration from x86 to x86_64

[aryan_]

Hi All,

I recently upgraded OS to its 64-bit version, namely, Ubuntu 9.10 64-bit.

After that, I began to experience anomalies (missing output data, infinite loops, etc) when executing my C++ application, which was previously running without any problems on x86.

Even though there is no application crash, I suspect that some third-party libraries along with even my own sources have problems due to the incompatibilities in data type lengths between x86 and x86_64.

I am in a situation where debugging the sources to find out about the real cause of the problem is difficult...

I want to hear about your suggestions.

Can I build my application using GCC compiler options with x86 settings on a x86_64 platform ?

Even if I am allowed to do that, is it really the right thing to do ? What might be the negative side-effects ?

Thanks.

[gerard4143]

Yes again -m32

g++ filename.cpp -m32 -o filename

[Rubberman]

If you use the -m32 option then you need to make sure you have 32-bit versions of all required libraries that are going to be linked.