epicsSingleton: eliminate global ctor with >= c++11

2022-09-29 17:51:05 -07:00
parent fe9995c0b5
commit 8f1243da40
1 changed files with 6 additions and 0 deletions
--- a/modules/libcom/src/cxxTemplates/epicsSingleton.h
+++ b/modules/libcom/src/cxxTemplates/epicsSingleton.h
@@ -23,6 +23,9 @@

 class SingletonUntyped {
 public:
+#if __cplusplus>=201103L
+    constexpr
+#endif
    SingletonUntyped () :_pInstance ( 0 ), _refCount ( 0 ) {}
 #   if 0
    ~SingletonUntyped () {
@@ -112,6 +115,9 @@ public:
        epicsSingleton * _pSingleton;
    };
    friend class reference;
+#if __cplusplus>=201103L
+    constexpr
+#endif
    epicsSingleton () {}
    // mutex lock/unlock pair overhead incurred
    // when either of these are called