Using long longs in a 32 bit app

What restrictions do I need to observe if I use long long ints (or off_t or fpos_t) in a 32 bit app? If I return a 64 bit value from a function, will that change the alignment of all function calls in the project? Can I use structs that contain long longs without affecting call alignments?

I don't have another
compiler/debugger to use, but I make more progress by
inserting my own debugging statements than with GDB.
You're not the only one!
If there is an alignment problem, the source is probably not in GCC. Even though using a long long is a little unusual for people like me, I'm sure there are enough people using long long in GCC to have worked out the bugs.
Are you doing pointer arithmetic? Are you assuming that the way you have defined your C structure is the way it looks in memory? Is it possible you have endian issues?
I would suggest starting a new thread. I think the only thing you've done wrong is assume that it is an alignment issue with GCC/GDB and asked a specific question about that. If you frame your question in terms of "I'm crashing here - anybody know why?" you'll get better responses. Of course, the ideal is a very small piece of runnable code the reproduces the error. I know that is usually not possible, but try the best you can. If nothing else, post the structures as you define them and then post some code examples of how you pass them and then how you use them.
Switching to C++ is another can of worms you probably don't want. I would rather see you use C than Python or Java. Just post some source code here or in a new thread and we'll take a look at it. Having another set of eyes makes a huge difference.

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Revision: 16385
Revision: 16385
Author:   [email protected]
Date:     2010-06-01 13:32:35 -0700 (Tue, 01 Jun 2010)
Log Message:
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Illegal use of LONG

I create on table say "TAB" with a column as long datatype
create table tab
(name long);
now i need to create another table structure similar to "TAB" say "TMP_TAB"
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as
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If you have Oracle 9i, then
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Illegal use of LONG datatype

While I was insert a rows into the same table I am getting an error. I am having one long column in table list. I am getting following error while I was inserting a row.
ORA-00997: illegal use of LONG datatype
Please let me know how do I insert long data type values for this kind of insert.

[duplicate thread|http://forums.oracle.com/forums/message.jspa?messageID=3770321#3770321]

Using long longs in a 32 bit app

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