[cfe-dev] Why is "..." printed 'After' the arg name in TypePrinter?

[Manasij Mukherjee]

Hi
I was experimenting with printing out variadic templates with clang.
I had a slight issue with how TypePrinter works for function arguments in
variadic function templates.

If I have this in my original source file:
template <typename T, typename ...U>
void foo(T t,U... args)
{

}

TypePrinter currently generates this:
U args...
which should have been
U... args
as far as I know.

Is there some policy I can set to change this behaviour?

I had to slightly modify the the implementation to get what I expected.

There are two functions in TypePrinter.cpp as follows:

void TypePrinter::printPackExpansionBefore(const PackExpansionType *T,
                                           raw_ostream &OS) {
  printBefore(T->getPattern(), OS);
  OS << "...";
}
void TypePrinter::printPackExpansionAfter(const PackExpansionType *T,
                                          raw_ostream &OS) {

    printAfter(T->getPattern(), OS);

}

The line:

OS << "...";

was previously in printPackExpansionAfter.

Why ?
Any side effects of moving it to the before function, as I did ?

Manasij Mukherjee
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