1 files changed, 130 insertions, 0 deletions
diff --git a/test/Sema/enum-attr.c b/test/Sema/enum-attr.c
new file mode 100644
index 0000000000000..933d8ccdcd89c
--- /dev/null
+++ b/test/Sema/enum-attr.c
@@ -0,0 +1,130 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -Wassign-enum -Wswitch-enum -Wcovered-switch-default %s
+
+enum Enum {
+  A0 = 1, A1 = 10
+};
+
+enum __attribute__((enum_extensibility(closed))) EnumClosed {
+  B0 = 1, B1 = 10
+};
+
+enum __attribute__((enum_extensibility(open))) EnumOpen {
+  C0 = 1, C1 = 10
+};
+
+enum __attribute__((flag_enum)) EnumFlag {
+  D0 = 1, D1 = 8
+};
+
+enum __attribute__((flag_enum,enum_extensibility(closed))) EnumFlagClosed {
+  E0 = 1, E1 = 8
+};
+
+enum __attribute__((flag_enum,enum_extensibility(open))) EnumFlagOpen {
+  F0 = 1, F1 = 8
+};
+
+enum __attribute__((enum_extensibility(arg1))) EnumInvalidArg { // expected-warning{{'enum_extensibility' attribute argument not supported: 'arg1'}}
+  X0
+};
+
+// FIXME: The warning should mention that enum_extensibility takes only one argument.
+enum __attribute__((enum_extensibility(closed,open))) EnumTooManyArgs { // expected-error{{use of undeclared identifier 'open'}}
+  X1
+};
+
+enum __attribute__((enum_extensibility())) EnumTooFewArgs { // expected-error{{'enum_extensibility' attribute takes one argument}}
+  X2
+};
+
+struct __attribute__((enum_extensibility(open))) S { // expected-warning{{'enum_extensibility' attribute only applies to enums}}{
+};
+
+void test() {
+  enum Enum t0 = 100; // expected-warning{{integer constant not in range of enumerated type}}
+  t0 = 1;
+
+  switch (t0) { // expected-warning{{enumeration value 'A1' not handled in switch}}
+  case A0: break;
+  case 16: break; // expected-warning{{case value not in enumerated type}}
+  }
+
+  switch (t0) {
+  case A0: break;
+  case A1: break;
+  default: break; // expected-warning{{default label in switch which covers all enumeration}}
+  }
+
+  enum EnumClosed t1 = 100; // expected-warning{{integer constant not in range of enumerated type}}
+  t1 = 1;
+
+  switch (t1) { // expected-warning{{enumeration value 'B1' not handled in switch}}
+  case B0: break;
+  case 16: break; // expected-warning{{case value not in enumerated type}}
+  }
+
+  switch (t1) {
+  case B0: break;
+  case B1: break;
+  default: break; // expected-warning{{default label in switch which covers all enumeration}}
+  }
+
+  enum EnumOpen t2 = 100;
+  t2 = 1;
+
+  switch (t2) { // expected-warning{{enumeration value 'C1' not handled in switch}}
+  case C0: break;
+  case 16: break;
+  }
+
+  switch (t2) {
+  case C0: break;
+  case C1: break;
+  default: break;
+  }
+
+  enum EnumFlag t3 = 5; // expected-warning{{integer constant not in range of enumerated type}}
+  t3 = 9;
+
+  switch (t3) { // expected-warning{{enumeration value 'D1' not handled in switch}}
+  case D0: break;
+  case 9: break;
+  case 16: break; // expected-warning{{case value not in enumerated type}}
+  }
+
+  switch (t3) {
+  case D0: break;
+  case D1: break;
+  default: break;
+  }
+
+  enum EnumFlagClosed t4 = 5; // expected-warning{{integer constant not in range of enumerated type}}
+  t4 = 9;
+
+  switch (t4) { // expected-warning{{enumeration value 'E1' not handled in switch}}
+  case E0: break;
+  case 9: break;
+  case 16: break; // expected-warning{{case value not in enumerated type}}
+  }
+
+  switch (t4) {
+  case E0: break;
+  case E1: break;
+  default: break;
+  }
+
+  enum EnumFlagOpen t5 = 5;
+  t5 = 9;
+
+  switch (t5) { // expected-warning{{enumeration value 'F1' not handled in switch}}
+  case F0: break;
+  case 9: break;
+  case 16: break;
+  }
+
+  switch (t5) {
+  case F0: break;
+  case F1: break;
+  default: break;
+  }
+}