http://llvm.org/bugs/show_bug.cgi?id=16550
Bug ID: 16550
Summary: Poor diagnostic when a default argument uses a default
initializer that has not been parsed yet
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++11
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
struct A
{
struct B
{
int i = 0;
};
B b;
A(const B& _b = B())
: b(_b)
{}
};
test.cpp:11:21: error: defaulted default constructor of 'B' cannot be used by
non-static data member initializer which appears before end of class definition
A(const B& _b = B())
^
This diagnostic is not correct. We should really say something more like:
test.cpp:5:17: error: non-static data member initializer used within class
definition
int i = 0;
^
test.cpp:11:21: note: implicitly used by use of defaulted default constructor
for 'B' in default argument here
A(const B& _b = B())
^
(We should probably wait until we have wording for core issue 1607 before
proceeding here; it's not entirely clear exactly what the rules will be yet.)
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