http://llvm.org/bugs/show_bug.cgi?id=9944
Summary: Doesn't SFINAE away an invalid substitution into
toplevel parameter type "T[N]"
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]
GCC incorrectly fails to compile this code
template<typename T> void f(T[1]) = delete;
template<typename T> void f(...);
int main() { f<void>(0); }
The substitution into "T" should fail, because "T[1]" is an invalid type, and
hence the call should use the second template.
Note that I think it's unspecified in the spec what happens when we tweak
things as follows
template<typename T> void f(T[1]) = delete;
template<typename T> void f(T*);
template<typename T> void f(...);
int main() { f<void>(0); }
The first two templates are equivalent, but behave different during
substitution. The spec doesn't specify what the outcome of this is, I think.
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