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For example, this allows to do: my_flags flags; ... flags |= some_flag; gdb/ChangeLog: * common/enum-flags.h (enum_flags::enum_flags): Initialize m_enum_value to 0 in default constructor. --- gdb/common/enum-flags.h | 1 + 1 file changed, 1 insertion(+) diff --git a/gdb/common/enum-flags.h b/gdb/common/enum-flags.h index 5b8c3ebc32..b1cf9a4644 100644 --- a/gdb/common/enum-flags.h +++ b/gdb/common/enum-flags.h @@ -117,6 +117,7 @@ private: public: /* Allow default construction, just like raw enums. */ enum_flags () + : m_enum_value ((enum_type) 0) {} enum_flags (const enum_flags &other)