use PyErr_WarnEx instead of PyErr_WarnFormat since the latter is not …

…available on all build platforms

bindings/pyroot/cppyy/CPyCppyy/src/TemplateProxy.cxx

@@ -305,10 +305,13 @@ PyObject* TemplateProxy::Instantiate(const std::string& fname,
  PyObject* pymeth =
  CPPOverload_Type.tp_descr_get(pyol, bNeedsRebind ? fSelf : nullptr, (PyObject*)&CPPOverload_Type);
  Py_DECREF(pyol);
- bool empty = diagnostics.str().find_first_not_of(' ') == diagnostics.str().npos;
- if (!empty) {
- PyErr_WarnFormat(PyExc_Warning, 1, "Compiler warnings during instantiation of \"%s(%s)\"\n%s", fname.c_str(),
- proto.c_str(), diagnostics.str().c_str());
+ // check if diagnostics contains only spaces since this can happen as a result of clang indenting
+ const bool emptydiag = diagnostics.str().find_first_not_of(' ') == diagnostics.str().npos;
+ if (!emptydiag) {
+ std::ostringstream warnmsg;
+ warnmsg << "Compiler warnings during instantiation of \"" << fname << "(" << proto << ")\"\n"
+ << diagnostics.str();
+ PyErr_WarnEx(PyExc_Warning, warnmsg.str().c_str(), 1);
  }
  return pymeth;
  }