> movl ((((10 + 3) & ~3) + 4) + 4)(%eax), %edx

I'm really puzzled; gcc would normally not generate assembler code
like this. Instead, with the expression being constant, gcc should
normally compute its result, and fill that into the assembler code.

To study this further, one would need to compare preprocessor output
and assembler output, to correlate them.