Space optimizations of globals and statics

When building embedded applications, optimization of space (eliminating
unused memory between global and or static variables/aggregates by
reordering them) is obviously very important. One compiler vendor I have
spoken with told me that they don't do this because the source code for
certain "UNIX utilities" actually makes assumption about the order of
variables. (I hope this is an old practice and that no one programs in
this manner any more.)


My question is, what do other compilers do (ie. do they reorder for space
optimization or do they leave the order alone) ?




Jack Patteeuw
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