http://llvm.org/bugs/show_bug.cgi?id=8800
Summary: conversion function not viable if conversion-type-id
is reference to incomplete type
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
$ clang++ -v
clang version 2.9 (trunk 121966)
Target: x86_64-unknown-linux-gnu
Thread model: posix
$
$ cat conv.cc
struct A;
struct C {
operator A&();
};
int main()
{
C c;
A& a1(c);
A& a2 = c;
A& a3 = static_cast<A&>(c);
A& a4 = (A&)c;
}
$
$ clang++ conv.cc
conv.cc:10:8: error: no viable conversion from 'C' to 'A'
A& a1(c);
^ ~
conv.cc:4:5: note: candidate function
operator A&();
^
conv.cc:11:8: error: no viable conversion from 'C' to 'A'
A& a2 = c;
^ ~
conv.cc:4:5: note: candidate function
operator A&();
^
conv.cc:12:13: error: no viable conversion from 'C' to 'A'
A& a3 = static_cast<A&>(c);
^ ~
conv.cc:4:5: note: candidate function
operator A&();
^
3 errors generated.
All four initializations should use the same conversion but only the fourth one
works. Conversion to A* works fine, but not A&
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