// RUN: %clang_cc1 -Wno-string-plus-int -fexperimental-new-constant-interpreter %s -verify // RUN: %clang_cc1 -Wno-string-plus-int -fexperimental-new-constant-interpreter -triple i686 %s -verify // RUN: %clang_cc1 -Wno-string-plus-int -verify=ref %s -Wno-constant-evaluated // RUN: %clang_cc1 -std=c++20 -Wno-string-plus-int -fexperimental-new-constant-interpreter %s -verify // RUN: %clang_cc1 -std=c++20 -Wno-string-plus-int -fexperimental-new-constant-interpreter -triple i686 %s -verify // RUN: %clang_cc1 -std=c++20 -Wno-string-plus-int -verify=ref %s -Wno-constant-evaluated // RUN: %clang_cc1 -triple avr -std=c++20 -Wno-string-plus-int -fexperimental-new-constant-interpreter %s -verify // RUN: %clang_cc1 -triple avr -std=c++20 -Wno-string-plus-int -verify=ref %s -Wno-constant-evaluated namespace strcmp { constexpr char kFoobar[6] = {'f','o','o','b','a','r'}; constexpr char kFoobazfoobar[12] = {'f','o','o','b','a','z','f','o','o','b','a','r'}; static_assert(__builtin_strcmp("", "") == 0, ""); static_assert(__builtin_strcmp("abab", "abab") == 0, ""); static_assert(__builtin_strcmp("abab", "abba") == -1, ""); static_assert(__builtin_strcmp("abab", "abaa") == 1, ""); static_assert(__builtin_strcmp("ababa", "abab") == 1, ""); static_assert(__builtin_strcmp("abab", "ababa") == -1, ""); static_assert(__builtin_strcmp("a\203", "a") == 1, ""); static_assert(__builtin_strcmp("a\203", "a\003") == 1, ""); static_assert(__builtin_strcmp("abab\0banana", "abab") == 0, ""); static_assert(__builtin_strcmp("abab", "abab\0banana") == 0, ""); static_assert(__builtin_strcmp("abab\0banana", "abab\0canada") == 0, ""); static_assert(__builtin_strcmp(0, "abab") == 0, ""); // expected-error {{not an integral constant}} \ // expected-note {{dereferenced null}} \ // expected-note {{in call to}} \ // ref-error {{not an integral constant}} \ // ref-note {{dereferenced null}} static_assert(__builtin_strcmp("abab", 0) == 0, ""); // expected-error {{not an integral constant}} \ // expected-note {{dereferenced null}} \ // expected-note {{in call to}} \ // ref-error {{not an integral constant}} \ // ref-note {{dereferenced null}} static_assert(__builtin_strcmp(kFoobar, kFoobazfoobar) == -1, ""); static_assert(__builtin_strcmp(kFoobar, kFoobazfoobar + 6) == 0, ""); // expected-error {{not an integral constant}} \ // expected-note {{dereferenced one-past-the-end}} \ // expected-note {{in call to}} \ // ref-error {{not an integral constant}} \ // ref-note {{dereferenced one-past-the-end}} } /// Copied from constant-expression-cxx11.cpp namespace strlen { constexpr const char *a = "foo\0quux"; constexpr char b[] = "foo\0quux"; constexpr int f() { return 'u'; } constexpr char c[] = { 'f', 'o', 'o', 0, 'q', f(), 'u', 'x', 0 }; static_assert(__builtin_strlen("foo") == 3, ""); static_assert(__builtin_strlen("foo\0quux") == 3, ""); static_assert(__builtin_strlen("foo\0quux" + 4) == 4, ""); constexpr bool check(const char *p) { return __builtin_strlen(p) == 3 && __builtin_strlen(p + 1) == 2 && __builtin_strlen(p + 2) == 1 && __builtin_strlen(p + 3) == 0 && __builtin_strlen(p + 4) == 4 && __builtin_strlen(p + 5) == 3 && __builtin_strlen(p + 6) == 2 && __builtin_strlen(p + 7) == 1 && __builtin_strlen(p + 8) == 0; } static_assert(check(a), ""); static_assert(check(b), ""); static_assert(check(c), ""); constexpr int over1 = __builtin_strlen(a + 9); // expected-error {{constant expression}} \ // expected-note {{one-past-the-end}} \ // expected-note {{in call to}} \ // ref-error {{constant expression}} \ // ref-note {{one-past-the-end}} constexpr int over2 = __builtin_strlen(b + 9); // expected-error {{constant expression}} \ // expected-note {{one-past-the-end}} \ // expected-note {{in call to}} \ // ref-error {{constant expression}} \ // ref-note {{one-past-the-end}} constexpr int over3 = __builtin_strlen(c + 9); // expected-error {{constant expression}} \ // expected-note {{one-past-the-end}} \ // expected-note {{in call to}} \ // ref-error {{constant expression}} \ // ref-note {{one-past-the-end}} constexpr int under1 = __builtin_strlen(a - 1); // expected-error {{constant expression}} \ // expected-note {{cannot refer to element -1}} \ // ref-error {{constant expression}} \ // ref-note {{cannot refer to element -1}} constexpr int under2 = __builtin_strlen(b - 1); // expected-error {{constant expression}} \ // expected-note {{cannot refer to element -1}} \ // ref-error {{constant expression}} \ // ref-note {{cannot refer to element -1}} constexpr int under3 = __builtin_strlen(c - 1); // expected-error {{constant expression}} \ // expected-note {{cannot refer to element -1}} \ // ref-error {{constant expression}} \ // ref-note {{cannot refer to element -1}} constexpr char d[] = { 'f', 'o', 'o' }; // no nul terminator. constexpr int bad = __builtin_strlen(d); // expected-error {{constant expression}} \ // expected-note {{one-past-the-end}} \ // expected-note {{in call to}} \ // ref-error {{constant expression}} \ // ref-note {{one-past-the-end}} } namespace nan { constexpr double NaN1 = __builtin_nan(""); /// The current interpreter does not accept this, but it should. constexpr float NaN2 = __builtin_nans([](){return "0xAE98";}()); // ref-error {{must be initialized by a constant expression}} #if __cplusplus < 201703L // expected-error@-2 {{must be initialized by a constant expression}} #endif constexpr double NaN3 = __builtin_nan("foo"); // expected-error {{must be initialized by a constant expression}} \ // ref-error {{must be initialized by a constant expression}} constexpr float NaN4 = __builtin_nanf(""); //constexpr long double NaN5 = __builtin_nanf128(""); /// FIXME: This should be accepted by the current interpreter as well. constexpr char f[] = {'0', 'x', 'A', 'E', '\0'}; constexpr double NaN6 = __builtin_nan(f); // ref-error {{must be initialized by a constant expression}} /// FIXME: Current interpreter misses diagnostics. constexpr char f2[] = {'0', 'x', 'A', 'E'}; /// No trailing 0 byte. constexpr double NaN7 = __builtin_nan(f2); // ref-error {{must be initialized by a constant expression}} \ // expected-error {{must be initialized by a constant expression}} \ // expected-note {{read of dereferenced one-past-the-end pointer}} \ // expected-note {{in call to}} static_assert(!__builtin_issignaling(__builtin_nan("")), ""); static_assert(__builtin_issignaling(__builtin_nans("")), ""); } namespace fmin { constexpr float f1 = __builtin_fmin(1.0, 2.0f); static_assert(f1 == 1.0f, ""); constexpr float min = __builtin_fmin(__builtin_nan(""), 1); static_assert(min == 1, ""); constexpr float min2 = __builtin_fmin(1, __builtin_nan("")); static_assert(min2 == 1, ""); constexpr float min3 = __builtin_fmin(__builtin_inf(), __builtin_nan("")); static_assert(min3 == __builtin_inf(), ""); } namespace inf { static_assert(__builtin_isinf(__builtin_inf()), ""); static_assert(!__builtin_isinf(1.0), ""); static_assert(__builtin_isfinite(1.0), ""); static_assert(!__builtin_isfinite(__builtin_inf()), ""); static_assert(__builtin_isnormal(1.0), ""); static_assert(!__builtin_isnormal(__builtin_inf()), ""); #ifndef __AVR__ static_assert(__builtin_issubnormal(0x1p-1070), ""); #endif static_assert(!__builtin_issubnormal(__builtin_inf()), ""); static_assert(__builtin_iszero(0.0), ""); static_assert(!__builtin_iszero(__builtin_inf()), ""); static_assert(__builtin_issignaling(__builtin_nans("")), ""); static_assert(!__builtin_issignaling(__builtin_inf()), ""); } namespace isfpclass { char isfpclass_inf_pos_0[__builtin_isfpclass(__builtin_inf(), 0x0200) ? 1 : -1]; // fcPosInf char isfpclass_inf_pos_1[!__builtin_isfpclass(__builtin_inff(), 0x0004) ? 1 : -1]; // fcNegInf char isfpclass_inf_pos_2[__builtin_isfpclass(__builtin_infl(), 0x0207) ? 1 : -1]; // fcSNan|fcQNan|fcNegInf|fcPosInf char isfpclass_inf_pos_3[!__builtin_isfpclass(__builtin_inf(), 0x01F8) ? 1 : -1]; // fcFinite char isfpclass_pos_0 [__builtin_isfpclass(1.0, 0x0100) ? 1 : -1]; // fcPosNormal char isfpclass_pos_1 [!__builtin_isfpclass(1.0f, 0x0008) ? 1 : -1]; // fcNegNormal char isfpclass_pos_2 [__builtin_isfpclass(1.0L, 0x01F8) ? 1 : -1]; // fcFinite char isfpclass_pos_3 [!__builtin_isfpclass(1.0, 0x0003) ? 1 : -1]; // fcSNan|fcQNan #ifndef __AVR__ char isfpclass_pdenorm_0[__builtin_isfpclass(1.0e-40f, 0x0080) ? 1 : -1]; // fcPosSubnormal char isfpclass_pdenorm_1[__builtin_isfpclass(1.0e-310, 0x01F8) ? 1 : -1]; // fcFinite char isfpclass_pdenorm_2[!__builtin_isfpclass(1.0e-40f, 0x003C) ? 1 : -1]; // fcNegative char isfpclass_pdenorm_3[!__builtin_isfpclass(1.0e-310, 0x0207) ? 1 : -1]; // ~fcFinite #endif char isfpclass_pzero_0 [__builtin_isfpclass(0.0f, 0x0060) ? 1 : -1]; // fcZero char isfpclass_pzero_1 [__builtin_isfpclass(0.0, 0x01F8) ? 1 : -1]; // fcFinite char isfpclass_pzero_2 [!__builtin_isfpclass(0.0L, 0x0020) ? 1 : -1]; // fcNegZero char isfpclass_pzero_3 [!__builtin_isfpclass(0.0, 0x0003) ? 1 : -1]; // fcNan char isfpclass_nzero_0 [__builtin_isfpclass(-0.0f, 0x0060) ? 1 : -1]; // fcZero char isfpclass_nzero_1 [__builtin_isfpclass(-0.0, 0x01F8) ? 1 : -1]; // fcFinite char isfpclass_nzero_2 [!__builtin_isfpclass(-0.0L, 0x0040) ? 1 : -1]; // fcPosZero char isfpclass_nzero_3 [!__builtin_isfpclass(-0.0, 0x0003) ? 1 : -1]; // fcNan char isfpclass_ndenorm_0[__builtin_isfpclass(-1.0e-40f, 0x0010) ? 1 : -1]; // fcNegSubnormal char isfpclass_ndenorm_2[!__builtin_isfpclass(-1.0e-40f, 0x03C0) ? 1 : -1]; // fcPositive #ifndef __AVR__ char isfpclass_ndenorm_1[__builtin_isfpclass(-1.0e-310, 0x01F8) ? 1 : -1]; // fcFinite char isfpclass_ndenorm_3[!__builtin_isfpclass(-1.0e-310, 0x0207) ? 1 : -1]; // ~fcFinite #endif char isfpclass_neg_0 [__builtin_isfpclass(-1.0, 0x0008) ? 1 : -1]; // fcNegNormal char isfpclass_neg_1 [!__builtin_isfpclass(-1.0f, 0x00100) ? 1 : -1]; // fcPosNormal char isfpclass_neg_2 [__builtin_isfpclass(-1.0L, 0x01F8) ? 1 : -1]; // fcFinite char isfpclass_neg_3 [!__builtin_isfpclass(-1.0, 0x0003) ? 1 : -1]; // fcSNan|fcQNan char isfpclass_inf_neg_0[__builtin_isfpclass(-__builtin_inf(), 0x0004) ? 1 : -1]; // fcNegInf char isfpclass_inf_neg_1[!__builtin_isfpclass(-__builtin_inff(), 0x0200) ? 1 : -1]; // fcPosInf char isfpclass_inf_neg_2[__builtin_isfpclass(-__builtin_infl(), 0x0207) ? 1 : -1]; // ~fcFinite char isfpclass_inf_neg_3[!__builtin_isfpclass(-__builtin_inf(), 0x03C0) ? 1 : -1]; // fcPositive char isfpclass_qnan_0 [__builtin_isfpclass(__builtin_nan(""), 0x0002) ? 1 : -1]; // fcQNan char isfpclass_qnan_1 [!__builtin_isfpclass(__builtin_nanf(""), 0x0001) ? 1 : -1]; // fcSNan char isfpclass_qnan_2 [__builtin_isfpclass(__builtin_nanl(""), 0x0207) ? 1 : -1]; // ~fcFinite char isfpclass_qnan_3 [!__builtin_isfpclass(__builtin_nan(""), 0x01F8) ? 1 : -1]; // fcFinite char isfpclass_snan_0 [__builtin_isfpclass(__builtin_nansf(""), 0x0001) ? 1 : -1]; // fcSNan char isfpclass_snan_1 [!__builtin_isfpclass(__builtin_nans(""), 0x0002) ? 1 : -1]; // fcQNan char isfpclass_snan_2 [__builtin_isfpclass(__builtin_nansl(""), 0x0207) ? 1 : -1]; // ~fcFinite char isfpclass_snan_3 [!__builtin_isfpclass(__builtin_nans(""), 0x01F8) ? 1 : -1]; // fcFinite } namespace fpclassify { char classify_nan [__builtin_fpclassify(+1, -1, -1, -1, -1, __builtin_nan(""))]; char classify_snan [__builtin_fpclassify(+1, -1, -1, -1, -1, __builtin_nans(""))]; char classify_inf [__builtin_fpclassify(-1, +1, -1, -1, -1, __builtin_inf())]; char classify_neg_inf [__builtin_fpclassify(-1, +1, -1, -1, -1, -__builtin_inf())]; char classify_normal [__builtin_fpclassify(-1, -1, +1, -1, -1, 1.539)]; #ifndef __AVR__ char classify_normal2 [__builtin_fpclassify(-1, -1, +1, -1, -1, 1e-307)]; char classify_denorm [__builtin_fpclassify(-1, -1, -1, +1, -1, 1e-308)]; char classify_denorm2 [__builtin_fpclassify(-1, -1, -1, +1, -1, -1e-308)]; #endif char classify_zero [__builtin_fpclassify(-1, -1, -1, -1, +1, 0.0)]; char classify_neg_zero[__builtin_fpclassify(-1, -1, -1, -1, +1, -0.0)]; char classify_subnorm [__builtin_fpclassify(-1, -1, -1, +1, -1, 1.0e-38f)]; } namespace fabs { static_assert(__builtin_fabs(-14.0) == 14.0, ""); } namespace std { struct source_location { struct __impl { unsigned int _M_line; const char *_M_file_name; signed char _M_column; const char *_M_function_name; }; using BuiltinT = decltype(__builtin_source_location()); // OK. }; } namespace SourceLocation { constexpr auto A = __builtin_source_location(); static_assert(A->_M_line == __LINE__ -1, ""); static_assert(A->_M_column == 22, ""); static_assert(__builtin_strcmp(A->_M_function_name, "") == 0, ""); static_assert(__builtin_strcmp(A->_M_file_name, __FILE__) == 0, ""); static_assert(__builtin_LINE() == __LINE__, ""); struct Foo { int a = __builtin_LINE(); }; static_assert(Foo{}.a == __LINE__, ""); struct AA { int n = __builtin_LINE(); }; struct B { AA a = {}; }; constexpr void f() { constexpr B c = {}; static_assert(c.a.n == __LINE__ - 1, ""); } } #define BITSIZE(x) (sizeof(x) * 8) namespace popcount { static_assert(__builtin_popcount(~0u) == __CHAR_BIT__ * sizeof(unsigned int), ""); static_assert(__builtin_popcount(0) == 0, ""); static_assert(__builtin_popcountl(~0ul) == __CHAR_BIT__ * sizeof(unsigned long), ""); static_assert(__builtin_popcountl(0) == 0, ""); static_assert(__builtin_popcountll(~0ull) == __CHAR_BIT__ * sizeof(unsigned long long), ""); static_assert(__builtin_popcountll(0) == 0, ""); /// From test/Sema/constant-builtins-2.c char popcount1[__builtin_popcount(0) == 0 ? 1 : -1]; char popcount2[__builtin_popcount(0xF0F0) == 8 ? 1 : -1]; char popcount3[__builtin_popcount(~0) == BITSIZE(int) ? 1 : -1]; char popcount4[__builtin_popcount(~0L) == BITSIZE(int) ? 1 : -1]; char popcount5[__builtin_popcountl(0L) == 0 ? 1 : -1]; char popcount6[__builtin_popcountl(0xF0F0L) == 8 ? 1 : -1]; char popcount7[__builtin_popcountl(~0L) == BITSIZE(long) ? 1 : -1]; char popcount8[__builtin_popcountll(0LL) == 0 ? 1 : -1]; char popcount9[__builtin_popcountll(0xF0F0LL) == 8 ? 1 : -1]; char popcount10[__builtin_popcountll(~0LL) == BITSIZE(long long) ? 1 : -1]; } namespace parity { /// From test/Sema/constant-builtins-2.c char parity1[__builtin_parity(0) == 0 ? 1 : -1]; char parity2[__builtin_parity(0xb821) == 0 ? 1 : -1]; char parity3[__builtin_parity(0xb822) == 0 ? 1 : -1]; char parity4[__builtin_parity(0xb823) == 1 ? 1 : -1]; char parity5[__builtin_parity(0xb824) == 0 ? 1 : -1]; char parity6[__builtin_parity(0xb825) == 1 ? 1 : -1]; char parity7[__builtin_parity(0xb826) == 1 ? 1 : -1]; char parity8[__builtin_parity(~0) == 0 ? 1 : -1]; char parity9[__builtin_parityl(1L << (BITSIZE(long) - 1)) == 1 ? 1 : -1]; char parity10[__builtin_parityll(1LL << (BITSIZE(long long) - 1)) == 1 ? 1 : -1]; } namespace clrsb { char clrsb1[__builtin_clrsb(0) == BITSIZE(int) - 1 ? 1 : -1]; char clrsb2[__builtin_clrsbl(0L) == BITSIZE(long) - 1 ? 1 : -1]; char clrsb3[__builtin_clrsbll(0LL) == BITSIZE(long long) - 1 ? 1 : -1]; char clrsb4[__builtin_clrsb(~0) == BITSIZE(int) - 1 ? 1 : -1]; char clrsb5[__builtin_clrsbl(~0L) == BITSIZE(long) - 1 ? 1 : -1]; char clrsb6[__builtin_clrsbll(~0LL) == BITSIZE(long long) - 1 ? 1 : -1]; char clrsb7[__builtin_clrsb(1) == BITSIZE(int) - 2 ? 1 : -1]; char clrsb8[__builtin_clrsb(~1) == BITSIZE(int) - 2 ? 1 : -1]; char clrsb9[__builtin_clrsb(1 << (BITSIZE(int) - 1)) == 0 ? 1 : -1]; char clrsb10[__builtin_clrsb(~(1 << (BITSIZE(int) - 1))) == 0 ? 1 : -1]; char clrsb11[__builtin_clrsb(0xf) == BITSIZE(int) - 5 ? 1 : -1]; char clrsb12[__builtin_clrsb(~0x1f) == BITSIZE(int) - 6 ? 1 : -1]; } namespace bitreverse { char bitreverse1[__builtin_bitreverse8(0x01) == 0x80 ? 1 : -1]; char bitreverse2[__builtin_bitreverse16(0x3C48) == 0x123C ? 1 : -1]; char bitreverse3[__builtin_bitreverse32(0x12345678) == 0x1E6A2C48 ? 1 : -1]; char bitreverse4[__builtin_bitreverse64(0x0123456789ABCDEFULL) == 0xF7B3D591E6A2C480 ? 1 : -1]; } namespace expect { constexpr int a() { return 12; } static_assert(__builtin_expect(a(),1) == 12, ""); static_assert(__builtin_expect_with_probability(a(), 1, 1.0) == 12, ""); } namespace rotateleft { char rotateleft1[__builtin_rotateleft8(0x01, 5) == 0x20 ? 1 : -1]; char rotateleft2[__builtin_rotateleft16(0x3210, 11) == 0x8190 ? 1 : -1]; char rotateleft3[__builtin_rotateleft32(0x76543210, 22) == 0x841D950C ? 1 : -1]; char rotateleft4[__builtin_rotateleft64(0xFEDCBA9876543210ULL, 55) == 0x87F6E5D4C3B2A19ULL ? 1 : -1]; } namespace rotateright { char rotateright1[__builtin_rotateright8(0x01, 5) == 0x08 ? 1 : -1]; char rotateright2[__builtin_rotateright16(0x3210, 11) == 0x4206 ? 1 : -1]; char rotateright3[__builtin_rotateright32(0x76543210, 22) == 0x50C841D9 ? 1 : -1]; char rotateright4[__builtin_rotateright64(0xFEDCBA9876543210ULL, 55) == 0xB97530ECA86421FDULL ? 1 : -1]; } namespace ffs { char ffs1[__builtin_ffs(0) == 0 ? 1 : -1]; char ffs2[__builtin_ffs(1) == 1 ? 1 : -1]; char ffs3[__builtin_ffs(0xfbe71) == 1 ? 1 : -1]; char ffs4[__builtin_ffs(0xfbe70) == 5 ? 1 : -1]; char ffs5[__builtin_ffs(1U << (BITSIZE(int) - 1)) == BITSIZE(int) ? 1 : -1]; char ffs6[__builtin_ffsl(0x10L) == 5 ? 1 : -1]; char ffs7[__builtin_ffsll(0x100LL) == 9 ? 1 : -1]; }