Bug 157452 – NeverDestroyed<> constructor does not pass std::initializer_list correctly

• Component: Web Template Framework
• Status: RESOLVED DUPLICATE

[Jer Noble]

Created attachment 278325 [details]
TestCase.cpp

The following code fails to compile:

#include <wtf/NeverDestroyed.h>
#include <wtf/Vector.h>

int main()
{
	Vector<int> v1 = {1, 2, 3}; // OK
	NeverDestroyed<Vector<int>> v2 = {1, 2, 3}; // "error: no matching constructor for initialization of 'WTF::Vector<int, 0, WTF::CrashOnOverflow, 16>"
	return 0;
}

This is likely because the "std::forward<Args>(args)..." in the NeverDestroyed constructor unrolls the initializer_list into a sequence of parameters, rather than passing it unadulterated.

[Darin Adler]

*** This bug has been marked as a duplicate of bug 132348 ***