View Compilation Error

0_0_6657798_13648.cpp: In function `void conv_insert(int, std::vector<pll, std::allocator<pll> >&, pll)':
0_0_6657798_13648.cpp:25: error: `test' undeclared (first use this function)
0_0_6657798_13648.cpp:25: error: (Each undeclared identifier is reported only once for each function it appears in.)