http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59328
Bug ID: 59328
Summary: Template cast operator ambiguity in a delete
expression
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: maxime.van.noppen at gmail dot com
The following code fails to compile with gcc whereas it works on Clang, Visual
Studio and ICC.
The version of gcc I tested: 4.4.7, 4.5.3, 4.6.4, 4.7.3, 4.8.1, 4.9.0 20130909
Code snippet:
template
struct Ptr
{
template
operator U*() const;
operator const T*() const;
};
void foo()
{
Ptr ptr;
delete ptr;
}
Errors:
error: default type conversion can't deduce template argument for
‘template Ptr::operator U*() const [with U = U; T = int]’
error: type ‘struct Ptr’ argument given to ‘delete’, expected pointer
My understanding is that the compiler shouldn't consider the templated cast
operator and that there shouldn't be an ambiguity here. This is what the other
compilers mentioned above do.
This is somewhat similar to the bug 58119 and I can confirm that the bug was
fixed on 4.9.0 20130909 but this code still fails on that version.
