"Tom Lane" <tgl@sss.pgh.pa.us> writes:
> Gregory Stark <stark@enterprisedb.com> writes:
>>> Tom Lane wrote:
>>>> Specifically, I think what you missed is that on some platforms C
>>>> functions pass or return float values differently from similar-sized
>>>> integer or pointer values (typically, the float values get passed in
>>>> floating-point registers).
>
>> But I'm skeptical that it would hit such a wide swathe of the build farm. In
>> particular AFAIK the standard ABI for i386 does no such thing.
>
> I did some digging, and it seems you're mistaken. The standard gcc ABI
> for both i386 and x86_64 returns floats in float registers (387
> registers in the first case, and SSE registers in the second case).
> This appears to have been the case for a very long time. I quote from
> the manual for gcc 2.95:
Ah, return values. I accidentally glossed over that point and was looking for
how parameters were passed.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
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