clang/test/Preprocessor/feature_tests.cpp

   1 // RUN: %clang_cc1 %s -triple=i686-apple-darwin9 -verify -DVERIFY
   2
   3 #ifndef __has_feature
   4 #error Should have __has_feature
   5 #endif
   6
   7 #if __has_feature(something_we_dont_have)
   8 #error Bad
   9 #endif
  10
  11 #if  !__has_builtin(__builtin_huge_val) || \
  12      !__has_builtin(__builtin_shufflevector) || \
  13      !__has_builtin(__builtin_convertvector) || \
  14      !__has_builtin(__builtin_trap) || \
  15      !__has_builtin(__c11_atomic_init) || \
  16      !__has_builtin(__builtin_launder) || \
  17      !__has_feature(attribute_analyzer_noreturn) || \
  18      !__has_feature(attribute_overloadable)
  19 #error Clang should have these
  20 #endif
  21
  22 // These are technically implemented as keywords, but __has_builtin should
  23 // still return true.
  24 #if !__has_builtin(__builtin_LINE) || \
  25     !__has_builtin(__builtin_FILE) || \
  26     !__has_builtin(__builtin_FUNCTION) || \
  27     !__has_builtin(__builtin_COLUMN) || \
  28     !__has_builtin(__array_rank) || \
  29     !__has_builtin(__underlying_type) || \
  30     !__has_builtin(__is_trivial) || \
  31     !__has_builtin(__is_same_as) || \
  32     !__has_builtin(__has_unique_object_representations)
  33 #error Clang should have these
  34 #endif
  35
  36 // This is a C-only builtin.
  37 #if __has_builtin(__builtin_types_compatible_p)
  38 #error Clang should not have this in C++ mode
  39 #endif
  40
  41 #if __has_builtin(__builtin_insanity)
  42 #error Clang should not have this
  43 #endif
  44
  45 // Check __has_constexpr_builtin
  46 #if  !__has_constexpr_builtin(__builtin_fmax) || \
  47      !__has_constexpr_builtin(__builtin_fmin)
  48 #error Clang should have these constexpr builtins
  49 #endif
  50
  51 #if  __has_constexpr_builtin(__builtin_cbrt)
  52 #error This builtin should not be constexpr in Clang
  53 #endif
  54
  55 #if  __has_constexpr_builtin(__builtin_insanity)
  56 #error This is not a builtin in Clang
  57 #endif
  58
  59 // expected-error@+1 {{missing '(' after '__has_constexpr_builtin'}} expected-error@+1 {{expected value}}
  60 #if __has_constexpr_builtin
  61 #endif
  62
  63 // expected-error@+1 {{builtin feature check macro requires a parenthesized identifier}}
  64 #if  __has_constexpr_builtin("__builtin_fmax")
  65 #endif
  66
  67 // expected-error@+1 {{too many arguments}}
  68 #if __has_constexpr_builtin(__builtin_fmax, __builtin_fmin)
  69 #endif