Merge branch 'ast-1422-check-string' into 'master'

AST-1422 Check string type

See merge request !130

src/h5parm/soltab.cc

@@ -53,6 +53,10 @@ SolTab::SolTab(H5::Group& group) : H5::Group(group) {
     throw std::runtime_error("H5 attribute TITLE not found in " + GetName());
   }
   H5::Attribute typeattr = openAttribute("TITLE");
+  if (typeattr.getDataType().isVariableStr()) {
+    throw std::runtime_error(
+        "H5Parm attribute TITLE is a variable string, which is not supported");
+  }
   hsize_t typenamelen = typeattr.getDataType().getSize();
   std::vector<char> type_chars(typenamelen + 1, '\0');
   typeattr.read(typeattr.getDataType(), type_chars.data());