| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
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| 2 | |
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| 3 | extern int funcInt(int); |
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| 4 | extern float funcFloat(float); |
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| 5 | extern double funcDouble(double); |
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| 6 | // figure out why "char *" doesn't work (with gcc, nothing to do with clang) |
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| 7 | //extern void funcCharPtr(char *); |
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| 8 | |
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| 9 | #define func(expr) \ |
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| 10 | do { \ |
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| 11 | typeof(expr) tmp; \ |
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| 12 | if (__builtin_types_compatible_p(typeof(expr), int)) funcInt(tmp); \ |
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| 13 | else if (__builtin_types_compatible_p(typeof(expr), float)) funcFloat(tmp); \ |
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| 14 | else if (__builtin_types_compatible_p(typeof(expr), double)) funcDouble(tmp); \ |
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| 15 | } while (0) |
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| 16 | #define func_choose(expr) \ |
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| 17 | __builtin_choose_expr(__builtin_types_compatible_p(typeof(expr), int), funcInt(expr), \ |
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| 18 | __builtin_choose_expr(__builtin_types_compatible_p(typeof(expr), float), funcFloat(expr), \ |
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| 19 | __builtin_choose_expr(__builtin_types_compatible_p(typeof(expr), double), funcDouble(expr), (void)0))) |
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| 20 | |
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| 21 | static void test() |
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| 22 | { |
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| 23 | int a; |
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| 24 | float b; |
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| 25 | double d; |
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| 26 | |
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| 27 | func(a); |
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| 28 | func(b); |
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| 29 | func(d); |
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| 30 | a = func_choose(a); |
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| 31 | b = func_choose(b); |
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| 32 | d = func_choose(d); |
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| 33 | |
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| 34 | int c; |
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| 35 | struct xx { int a; } x, y; |
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| 36 | |
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| 37 | c = __builtin_choose_expr(a+3-7, b, x); // expected-error{{'__builtin_choose_expr' requires a constant expression}} |
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| 38 | c = __builtin_choose_expr(0, b, x); // expected-error{{assigning to 'int' from incompatible type 'struct xx'}} |
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| 39 | c = __builtin_choose_expr(5+3-7, b, x); |
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| 40 | y = __builtin_choose_expr(4+3-7, b, x); |
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| 41 | |
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| 42 | } |
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| 43 | |
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| 44 | enum E1 { E1Foo }; |
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| 45 | enum E2 { E2Foo }; |
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| 46 | |
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| 47 | static void testGccCompatibility() { |
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| 48 | _Static_assert(__builtin_types_compatible_p(const volatile int, int), ""); |
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| 49 | _Static_assert(__builtin_types_compatible_p(int[5], int[]), ""); |
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| 50 | _Static_assert(!__builtin_types_compatible_p(int[5], int[4]), ""); |
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| 51 | _Static_assert(!__builtin_types_compatible_p(int *, int **), ""); |
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| 52 | _Static_assert(!__builtin_types_compatible_p(const int *, int *), ""); |
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| 53 | _Static_assert(!__builtin_types_compatible_p(enum E1, enum E2), ""); |
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| 54 | |
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| 55 | // GCC's __builtin_types_compatible_p ignores qualifiers on arrays. |
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| 56 | _Static_assert(__builtin_types_compatible_p(const int[4], int[4]), ""); |
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| 57 | _Static_assert(__builtin_types_compatible_p(int[4], const int[4]), ""); |
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| 58 | _Static_assert(__builtin_types_compatible_p(const int[5][4], int[][4]), ""); |
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| 59 | _Static_assert(!__builtin_types_compatible_p(const int(*)[], int(*)[]), ""); |
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| 60 | } |
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| 61 | |
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