================
@@ -0,0 +1,62 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
+
+enum Unscoped { U0 = 1, U1 = 8 };
+enum class Scoped { S0 = 1, S1 = 8 };
+enum [[clang::flag_enum]] UnscopedFlag { D0 = 1, D1 = 8 };
+enum class [[clang::flag_enum]] WithOps { D0 = 1, D1 = 8 };
+enum class [[clang::flag_enum]] WithoutOps { D0 = 1, D1 = 8 };
+// expected-warning@-1 {{operator| is not available for flag-like enumeration
type WithoutOps}} \
+// expected-warning@-1 {{operator& is not available for flag-like enumeration
type WithoutOps}} \
+// expected-warning@-1 {{operator^ is not available for flag-like enumeration
type WithoutOps}} \
+// expected-warning@-1 {{operator~ is not available for flag-like enumeration
type WithoutOps}}
+
+WithOps operator|(WithOps L, WithOps R) {
+ return static_cast<WithOps>(static_cast<unsigned>(L) |
static_cast<unsigned>(R));
+}
+
+WithOps operator&(WithOps L, WithOps R) {
+ return static_cast<WithOps>(static_cast<unsigned>(L) &
static_cast<unsigned>(R));
+}
+
+WithOps operator^(WithOps L, WithOps R) {
+ return static_cast<WithOps>(static_cast<unsigned>(L) ^
static_cast<unsigned>(R));
+}
+
+WithOps operator~(WithOps L) {
+ return static_cast<WithOps>(~static_cast<unsigned>(L));
+}
+
----------------
cor3ntin wrote:
you don't actually need to provide implementations
https://github.com/llvm/llvm-project/pull/218290
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