clang/test/Preprocessor/feature_tests.cpp

   1 // RUN: %clang_cc1 %s -triple=i686-apple-darwin9 -verify -DVERIFY
   2 // RUN: %clang_cc1 %s -triple=i686-apple-darwin9 -fms-extensions -DMS -verify -DVERIFY
   3
   4 #ifndef __has_feature
   5 #error Should have __has_feature
   6 #endif
   7
   8 #if __has_feature(something_we_dont_have)
   9 #error Bad
  10 #endif
  11
  12 #if  !__has_builtin(__builtin_huge_val) || \
  13      !__has_builtin(__builtin_shufflevector) || \
  14      !__has_builtin(__builtin_convertvector) || \
  15      !__has_builtin(__builtin_trap) || \
  16      !__has_builtin(__c11_atomic_init) || \
  17      !__has_builtin(__builtin_launder) || \
  18      !__has_feature(attribute_analyzer_noreturn) || \
  19      !__has_feature(attribute_overloadable)
  20 #error Clang should have these
  21 #endif
  22
  23 // These are technically implemented as keywords, but __has_builtin should
  24 // still return true.
  25 #if !__has_builtin(__builtin_LINE) || \
  26     !__has_builtin(__builtin_FILE) || \
  27     !__has_builtin(__builtin_FILE_NAME) || \
  28     !__has_builtin(__builtin_FUNCTION) || \
  29     !__has_builtin(__builtin_COLUMN) || \
  30     !__has_builtin(__array_rank) || \
  31     !__has_builtin(__underlying_type) || \
  32     !__has_builtin(__is_trivial) || \
  33     !__has_builtin(__is_same_as) || \
  34     !__has_builtin(__has_unique_object_representations)
  35 #error Clang should have these
  36 #endif
  37
  38 #ifdef MS
  39 #if !__has_builtin(__builtin_FUNCSIG)
  40 #error Clang should have this
  41 #endif
  42 #elif __has_builtin(__builtin_FUNCSIG)
  43 #error Clang should not have this without '-fms-extensions'
  44 #endif
  45
  46 // This is a C-only builtin.
  47 #if __has_builtin(__builtin_types_compatible_p)
  48 #error Clang should not have this in C++ mode
  49 #endif
  50
  51 #if __has_builtin(__builtin_insanity)
  52 #error Clang should not have this
  53 #endif
  54
  55 // Check __has_constexpr_builtin
  56 #if  !__has_constexpr_builtin(__builtin_fmax) || \
  57      !__has_constexpr_builtin(__builtin_fmin)
  58 #error Clang should have these constexpr builtins
  59 #endif
  60
  61 #if  __has_constexpr_builtin(__builtin_cbrt)
  62 #error This builtin should not be constexpr in Clang
  63 #endif
  64
  65 #if  __has_constexpr_builtin(__builtin_insanity)
  66 #error This is not a builtin in Clang
  67 #endif
  68
  69 // expected-error@+1 {{missing '(' after '__has_constexpr_builtin'}} expected-error@+1 {{expected value}}
  70 #if __has_constexpr_builtin
  71 #endif
  72
  73 // expected-error@+1 {{builtin feature check macro requires a parenthesized identifier}}
  74 #if  __has_constexpr_builtin("__builtin_fmax")
  75 #endif
  76
  77 // expected-error@+1 {{too many arguments}}
  78 #if __has_constexpr_builtin(__builtin_fmax, __builtin_fmin)
  79 #endif