llvm/lldb/test/API/commands/expression/import-std-module/forward_decl_from_module/main.cpp

#include <vector>

int main(int argc, char **argv) {
  // Makes sure we have the mock libc headers in the debug information.
  libc_struct s;
  std::vector<int> v;
  return 0; // Set break point at this line.
}