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Re: [PATCH,fortran]: fix bind(c) common block alignment
On Mon, Aug 06, 2007 at 11:17:01AM -0600, Christopher D. Rickett wrote:
> hi Tobias,
>
> currently, the patch only changes the alignment if the common block is
> bind(c), which means the compiler should have already verified that the
> common block fields interop with C.
>
> as to why we weren't seeing it before, i do not know. the
> bind_c_coms.f90/bind_c_coms_driver.c illustrates on x86 linux that there
> is a difference in the alignment. the generated assembly shows it, but
> the linker didn't complain.
>
The Linux linker can handle different alignments on the same common
symbol without problems. Linker will complain only if a definition of
a smaller alignment overrides a common symbol with a bigger alignment.
We have linker testcases to verify those.
H.J.