[tools-compilers] A potential problem of Function Pointer as Template Parameter in SS12

[Yong Sun]

//extern "C" void foo (void*);
extern void foo (void*);

template <typename T, void(*cb)(T*)> class Test {};
typedef Test<void, foo> TestVoid;

SunStudio C++ compiler will fail if we uncomment the 1st line, and reports:

line 5: Error: Template parameter cb requires an expression of type 
void(*)(void*).
1 Error(s) detected.
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