* could not convert `obj(5)' to `obj &'
@ 2003-11-11 16:45 Jon Vance
2003-11-12 11:40 ` Nathan Sidwell
0 siblings, 1 reply; 3+ messages in thread
From: Jon Vance @ 2003-11-11 16:45 UTC (permalink / raw)
To: gcc-help
I have a bunch of code that used to compile under an older version of gcc,
and will not do so using 2.96. Here is a very simple example of the
problem I am having:
CODE:
#include <stdio.h>
struct obj
{
int i;
obj(int n) : i(n) {}
};
void printit(obj& o)
{
printf("%d\n", o.i);
}
main()
{
printit(obj(5));
}
COMPILER ERROR:
g++ t.cpp -o t
t.cpp: In function `int main ()':
t.cpp:17: could not convert `obj(5)' to `obj &'
t.cpp:11: in passing argument 1 of `printit (obj &)'
make: *** [t] Error 1
Any ideas?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: could not convert `obj(5)' to `obj &'
2003-11-11 16:45 could not convert `obj(5)' to `obj &' Jon Vance
@ 2003-11-12 11:40 ` Nathan Sidwell
0 siblings, 0 replies; 3+ messages in thread
From: Nathan Sidwell @ 2003-11-12 11:40 UTC (permalink / raw)
To: Jon Vance; +Cc: gcc-help
Jon Vance wrote:
>
> I have a bunch of code that used to compile under an older version of
> gcc, and will not do so using 2.96. Here is a very simple example of
> the problem I am having:
> void printit(obj& o)
void printit (obj const & o)
> {
> printf("%d\n", o.i);
> }
> g++ t.cpp -o t
> t.cpp: In function `int main ()':
> t.cpp:17: could not convert `obj(5)' to `obj &'
> t.cpp:11: in passing argument 1 of `printit (obj &)'
> make: *** [t] Error 1
you cannot bind a temporary to a non-constant reference
nathan
--
Nathan Sidwell :: http://www.codesourcery.com :: CodeSourcery LLC
The voices in my head said this was stupid too
nathan@codesourcery.com :: http://www.planetfall.pwp.blueyonder.co.uk
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: could not convert `obj(5)' to `obj &'
@ 2003-11-11 17:20 Lev Assinovsky
0 siblings, 0 replies; 3+ messages in thread
From: Lev Assinovsky @ 2003-11-11 17:20 UTC (permalink / raw)
To: Jon Vance, gcc-help
You have to use void printit(const obj& o)
since you pass obj(n) which is considered as a temporary.
----
Lev Assinovsky
Aelita Software Corporation
O&S InTrust Framework Division, Team Leader
ICQ# 165072909
> -----Original Message-----
> From: Jon Vance [mailto:mail@jonvance.com]
> Sent: Tuesday, November 11, 2003 7:45 PM
> To: gcc-help@gcc.gnu.org
> Subject: could not convert `obj(5)' to `obj &'
>
>
>
> I have a bunch of code that used to compile under an older
> version of gcc,
> and will not do so using 2.96. Here is a very simple example of the
> problem I am having:
>
> CODE:
>
> #include <stdio.h>
>
> struct obj
> {
> int i;
>
> obj(int n) : i(n) {}
> };
>
> void printit(obj& o)
> {
> printf("%d\n", o.i);
> }
>
> main()
> {
> printit(obj(5));
> }
>
>
>
> COMPILER ERROR:
>
> g++ t.cpp -o t
> t.cpp: In function `int main ()':
> t.cpp:17: could not convert `obj(5)' to `obj &'
> t.cpp:11: in passing argument 1 of `printit (obj &)'
> make: *** [t] Error 1
>
>
>
> Any ideas?
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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