1 files changed, 92 insertions, 0 deletions
diff --git a/test/Sema/warn-duplicate-enum.c b/test/Sema/warn-duplicate-enum.c
new file mode 100644
index 000000000000..239f6f1995c3
--- /dev/null
+++ b/test/Sema/warn-duplicate-enum.c
@@ -0,0 +1,92 @@
+// RUN: %clang_cc1 %s -fsyntax-only -verify -Wduplicate-enum
+// RUN: %clang_cc1 %s -x c++ -fsyntax-only -verify -Wduplicate-enum
+enum A {
+  A1 = 0,  // expected-note {{element A1 also has value 0}}
+  A2 = -1,
+  A3,  // expected-warning {{element A3 has been implicitly assigned 0 which another element has been assigned}}
+  A4};
+
+enum B {
+  B1 = -1,  // expected-note {{element B1 also has value -1}}
+  B2,       // expected-warning {{element B2 has been implicitly assigned 0 which another element has been assigned}}
+  B3,
+  B4 = -2,
+  B5,  // expected-warning {{element B5 has been implicitly assigned -1 which another element has been assigned}}
+  B6   // expected-note {{element B6 also has value 0}}
+};
+
+enum C { C1, C2 = -1, C3 }; // expected-warning{{element C1 has been implicitly assigned 0 which another element has been assigned}} \
+  // expected-note {{element C3 also has value 0}}
+
+enum D {
+  D1,
+  D2,
+  D3,  // expected-warning{{element D3 has been implicitly assigned 2 which another element has been assigned}}
+  D4 = D2,  // no warning
+  D5 = 2  // expected-note {{element D5 also has value 2}}
+};
+
+enum E {
+  E1,
+  E2 = E1,
+  E3 = E2
+};
+
+enum F {
+  F1,
+  F2,
+  FCount,
+  FMax = FCount - 1
+};
+
+enum G {
+  G1,
+  G2,
+  GMax = G2,
+  GCount = GMax + 1
+};
+
+enum {
+  H1 = 0,
+  H2 = -1,
+  H3,
+  H4};
+
+enum {
+  I1 = -1,
+  I2,
+  I3,
+  I4 = -2,
+  I5,
+  I6
+};
+
+enum { J1, J2 = -1, J3 };
+
+enum { 
+  K1, 
+  K2, 
+  K3,
+  K4 = K2,
+  K5 = 2
+};
+
+enum {
+  L1,
+  L2 = L1,
+  L3 = L2
+};
+
+enum {
+  M1,
+  M2,
+  MCount,
+  MMax = MCount - 1
+};
+
+enum {
+  N1,
+  N2,
+  NMax = N2,
+  NCount = NMax + 1
+};