http://llvm.org/bugs/show_bug.cgi?id=13661
Bug #: 13661
Summary: unhelpful error message on missing parentheses on main
Product: clang
Version: 3.1
Platform: PC
OS/Version: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: -New Bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Given this code:
#include <iostream>
template<typename T>
class Val {
T Value;
public:
T const& Get() const { return Value; }
Val(T value) : Value(value) { }
};
using A = Val<int>;
using B = Val<char>;
int operator+ (A const& a, B const& b)
{
return a.Get() + b.Get();
}
template <class T, class U>
auto add(T t, U u) -> decltype(t+u)
{
return t+u;
}
int main
{
A a(5);
B b(3);
auto Result = add(a,b);
}
Clang complains:
test.cpp:27:13: error: unexpected type name 'A': expected expression
A a(5);
^
test.cpp:30:1: error: expected ';' after top level declarator
^
;
Which is totally messed up.
The problem here is missing parentheses after the token "main".
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