codeql/cpp/ql/test/experimental/library-tests/rangeanalysis/extensibility/extensibility.c

/// Adds its arguments (has custom modeling in QL)
int custom_add_function(int a, int b);

int test_extensibility_add(int x) {
  if (x >= -10 && x <= 10) {
    int result = custom_add_function(x, 100);
    return result; // 90 .. 110
  }
}