Article View: comp.std.c++
Article #3146Explicit constructor call vs Temporaries
From: eddy Gorsuch
Date: Thu, 25 Jan 1996 16:12
Date: Thu, 25 Jan 1996 16:12
34 lines
1643 bytes
1643 bytes
Is an explicit call to an object constructor (an unamed object) const or
not? I have code like the following where I don't care about the parameter
to X::f(), so I just created an unamed T(). I thought I had tried to compile
this code and got errors about trying to pass a const object to a non const
reference parameter. Thinking that the unamed T() counts as a temporary (and
therefor const) object, I believed that the compiler was right. Now somebody
tells me that the following code is legal. Is it?
class T {
T();
~T();
}
class X {
X();
~X();
f(T& t);
}
int main() {
X x;
x.f(T()); // Compiler complained on this line
}
eddy
--
ed.dy \'ed-e-\ n [ME (Sc dial.) ydy, prob. fr. ON itha; akin to OHG ith-
again], L et and 1a: a current of water or air running contrary to the main
current; esp)X : a small whirlpool 1b: a substance moving similarly 2: a
contrary or circular current - eddy vb
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Path: arc1-ca.pugleaf.net!engnews1.Eng.Sun.COM!taumet!clamage From: eddy@siemensrolm.com (eddy Gorsuch) Newsgroups: comp.std.c++ Subject: Explicit constructor call vs Temporaries Date: 25 Jan 1996 16:12:06 GMT Organization: Siemens Rolm Communications Inc. Approved: clamage@eng.sun.com (comp.std.c++) Message-ID: <4e6plv$idn@eclipse.eng.sc.rolm.com> NNTP-Posting-Host: taumet.eng.sun.com Content-Type: text Content-Length: 929 X-Lines: 30 Originator: clamage@taumet