Re: Method call args order
Re: Method call args order
- Subject: Re: Method call args order
- From: "R. Matthew Emerson" <email@hidden>
- Date: Mon, 25 Sep 2006 12:01:20 -0400
On Sep 25, 2006, at 11:50 AM, Jean-Daniel Dupas wrote:
Is it always true for C language?
Yes. The order of function argument evaluation is undefined in C.
http://cm.bell-labs.com/cm/cs/who/dmr/clcs.html is an old paper that
talks about the rationale for this. See the section "Effects on the
Language" near the end of the paper.
Le 25 sept. 06 à 17:46, David A Rowland a écrit :
At 4:12 PM +0100 9/25/06, Paul Walmsley wrote:
I have problems with this function call:
int i=0;
printf("Format %i, %i\n", i++, i++);
The order of evaluation of function arguments is undefined in C+
+, so there is no guarantee which of the i++ gets evaluated
first. See Item 31 in Sutter & Alexandrescu's 'C++ coding
standards'. This is exactly the example they give that is not
guaranteed to work.
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