C++ Generating Back End Adds Extra '...' #412

Issue Summary

When using the C++ generating back end with the included code an extra '...' is included:

__attribute((acquire_capability(Mutexes ( ) ... )...)) void

Reproducing Source Code

template <class... Mutexes>
__attribute__((acquire_capability(Mutexes()...)))
void lock_all(Mutexes&...);
int main() { return 0; }

Command-line Options

cpfe-cp --c++23 test.cpp

Type of Issue

[Back End] There is a problem with the generated C++ code.

Additional Details

No response

Reproducing (Standard) Configuration(s)

linux-gcc-debug

Reproducing (Non-standard) Configuration

No response

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