clang/test/Sema/warn-duplicate-enum.c

   1 // RUN: %clang_cc1 %s -fsyntax-only -verify -Wduplicate-enum
   2 // RUN: %clang_cc1 -triple x86_64-apple-darwin %s -x c++ -DCPP -fsyntax-only -verify -Wduplicate-enum
   3 enum A {
   4   A1 = 0,  // expected-note {{element 'A1' also has value 0}}
   5   A2 = -1,
   6   A3,  // expected-warning {{element 'A3' has been implicitly assigned 0 which another element has been assigned}}
   7   A4};
   8
   9 enum B {
  10   B1 = -1,  // expected-note {{element 'B1' also has value -1}}
  11   B2,       // expected-warning {{element 'B2' has been implicitly assigned 0 which another element has been assigned}}
  12   B3,
  13   B4 = -2,
  14   B5,  // expected-warning {{element 'B5' has been implicitly assigned -1 which another element has been assigned}}
  15   B6   // expected-note {{element 'B6' also has value 0}}
  16 };
  17
  18 enum C { C1, C2 = -1, C3 }; // expected-warning{{element 'C1' has been implicitly assigned 0 which another element has been assigned}} \
  19   // expected-note {{element 'C3' also has value 0}}
  20
  21 enum D {
  22   D1,
  23   D2,
  24   D3,  // expected-warning{{element 'D3' has been implicitly assigned 2 which another element has been assigned}}
  25   D4 = D2,  // no warning
  26   D5 = 2  // expected-note {{element 'D5' also has value 2}}
  27 };
  28
  29 enum E {
  30   E1,
  31   E2 = E1,
  32   E3 = E2
  33 };
  34
  35 enum F {
  36   F1,
  37   F2,
  38   FCount,
  39   FMax = FCount - 1
  40 };
  41
  42 enum G {
  43   G1,
  44   G2,
  45   GMax = G2,
  46   GCount = GMax + 1
  47 };
  48
  49 enum {
  50   H1 = 0,
  51   H2 = -1,
  52   H3,
  53   H4};
  54
  55 enum {
  56   I1 = -1,
  57   I2,
  58   I3,
  59   I4 = -2,
  60   I5,
  61   I6
  62 };
  63
  64 enum { J1, J2 = -1, J3 };
  65
  66 enum {
  67   K1,
  68   K2,
  69   K3,
  70   K4 = K2,
  71   K5 = 2
  72 };
  73
  74 enum {
  75   L1,
  76   L2 = L1,
  77   L3 = L2
  78 };
  79
  80 enum {
  81   M1,
  82   M2,
  83   MCount,
  84   MMax = MCount - 1
  85 };
  86
  87 enum {
  88   N1,
  89   N2,
  90   NMax = N2,
  91   NCount = NMax + 1
  92 };
  93
  94 // PR15693
  95 enum enum1 {
  96   VALUE // expected-note{{previous definition is here}}
  97 };
  98
  99 enum enum2 {
 100   VALUE // expected-error{{redefinition of enumerator 'VALUE'}}
 101 };
 102
 103 #ifdef CPP
 104 enum BigEnumerators : long {
 105   e1,
 106   e2 = __LONG_MAX__,
 107 };
 108 #endif