fix: use C++11 compatible construct

giacomofiorin · giacomofiorin · commit 64f09ec351d6 · 2025-09-10T15:26:42.000-04:00
diff --git a/src/colvarparse.h b/src/colvarparse.h
@@ -397,7 +397,7 @@ class colvarparse : public colvarparams {
 inline constexpr colvarparse::Parse_Mode operator|(colvarparse::Parse_Mode mode1,
                                                    colvarparse::Parse_Mode mode2)
 {
-  using T = std::underlying_type_t<colvarparse::Parse_Mode>;
+  using T = std::underlying_type<colvarparse::Parse_Mode>::type;
   return static_cast<colvarparse::Parse_Mode>(static_cast<T>(mode1) | static_cast<T>(mode2));
 }
 

Original file line number	Diff line number	Diff line change
`@@ -397,7 +397,7 @@ class colvarparse : public colvarparams {`
`397`	`397`	`inline constexpr colvarparse::Parse_Mode operator\|(colvarparse::Parse_Mode mode1,`
`398`	`398`	`colvarparse::Parse_Mode mode2)`
`399`	`399`	`{`
`400`		`- using T = std::underlying_type_t<colvarparse::Parse_Mode>;`
	`400`	`+ using T = std::underlying_type<colvarparse::Parse_Mode>::type;`
`401`	`401`	`return static_cast<colvarparse::Parse_Mode>(static_cast<T>(mode1) \| static_cast<T>(mode2));`
`402`	`402`	`}`
`403`	`403`