http://llvm.org/bugs/show_bug.cgi?id=14273
Bug #: 14273
Summary: sizeof... in return type causes segfault
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++11
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Using sizeof... in the return type of a function with variadic arguments
segfaults. See the following code example, reduced from a simple
'make_std_array' function. As you can see, if I use a template to calculate the
size of the variadic arguments, rather than sizeof..., then the code works
fine.
Broken in today's svn.
template<typename T, int i>
struct myType
{ };
template<typename T, typename... Args>
struct Counter
{
static const int count = 1 + Counter<Args...>::count;
};
template<typename T>
struct Counter<T>
{
static const int count = 1;
};
// This works fine.
template<typename Arg, typename... Args>
myType<Arg, Counter<Args...>::count>* make_array_with_type_with_counter(const
Args&... args)
{
return 0;
}
// This segfaults
template<typename Arg, typename... Args>
myType<Arg, sizeof...(Args)>* make_array_with_type(const Args&... args)
{
return 0;
}
int main(void)
{
make_array_with_type<char>(1,2,3);
}
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