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From: MAB01057%UFRJ.BITNET@cornellc.cit.cornell.edu (Marcelo Amarante Ferreira Gomes)
Newsgroups: comp.os.minix
Subject: Re: C SYNTAX QUESTION
Message-ID: <16421@nigel.udel.EDU>
Date: 10 Apr 90 21:32:15 GMT
Sender: mmdf@udel.EDU
Lines: 22

In a previous message, Chistoph van Wuellen <HBO043@DJUKFA11> writes
about problems with the function

test(a) float a;
{
test1(&a);
}

Since the message is addressed to 'C Sintax experts', I shouldn't be
answering to it, but I will anyway :-)

I believe that the compiler could (I don't know if it should) try the
following: on promoting the 'a' to double, copy it to another area of
memory (in the stack, maybe) and pass the pointer to that area. On return,
the code should copy the contents in there to the original float variable
'a', wich caused the whole mess.

I know this is not a very elegant solution, but I think it solves the
problem. I couldn't think of a code fragment in wich this approach would
cause any trouble. Can anyone out there think of it? :-)

                         Marcelo A. Ferreira Gomes (Wally Gator)