263 lines
15 KiB
C++
263 lines
15 KiB
C++
// RUN: %clang_cc1 -Wno-string-plus-int -fexperimental-new-constant-interpreter %s -verify
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// RUN: %clang_cc1 -Wno-string-plus-int -fexperimental-new-constant-interpreter -triple i686 %s -verify
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// RUN: %clang_cc1 -Wno-string-plus-int -verify=ref %s -Wno-constant-evaluated
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// RUN: %clang_cc1 -std=c++20 -Wno-string-plus-int -fexperimental-new-constant-interpreter %s -verify
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// RUN: %clang_cc1 -std=c++20 -Wno-string-plus-int -fexperimental-new-constant-interpreter -triple i686 %s -verify
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// RUN: %clang_cc1 -std=c++20 -Wno-string-plus-int -verify=ref %s -Wno-constant-evaluated
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// RUN: %clang_cc1 -triple avr -std=c++20 -Wno-string-plus-int -fexperimental-new-constant-interpreter %s -verify
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// RUN: %clang_cc1 -triple avr -std=c++20 -Wno-string-plus-int -verify=ref %s -Wno-constant-evaluated
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namespace strcmp {
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constexpr char kFoobar[6] = {'f','o','o','b','a','r'};
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constexpr char kFoobazfoobar[12] = {'f','o','o','b','a','z','f','o','o','b','a','r'};
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static_assert(__builtin_strcmp("", "") == 0, "");
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static_assert(__builtin_strcmp("abab", "abab") == 0, "");
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static_assert(__builtin_strcmp("abab", "abba") == -1, "");
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static_assert(__builtin_strcmp("abab", "abaa") == 1, "");
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static_assert(__builtin_strcmp("ababa", "abab") == 1, "");
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static_assert(__builtin_strcmp("abab", "ababa") == -1, "");
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static_assert(__builtin_strcmp("a\203", "a") == 1, "");
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static_assert(__builtin_strcmp("a\203", "a\003") == 1, "");
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static_assert(__builtin_strcmp("abab\0banana", "abab") == 0, "");
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static_assert(__builtin_strcmp("abab", "abab\0banana") == 0, "");
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static_assert(__builtin_strcmp("abab\0banana", "abab\0canada") == 0, "");
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static_assert(__builtin_strcmp(0, "abab") == 0, ""); // expected-error {{not an integral constant}} \
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// expected-note {{dereferenced null}} \
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// expected-note {{in call to}} \
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// ref-error {{not an integral constant}} \
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// ref-note {{dereferenced null}}
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static_assert(__builtin_strcmp("abab", 0) == 0, ""); // expected-error {{not an integral constant}} \
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// expected-note {{dereferenced null}} \
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// expected-note {{in call to}} \
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// ref-error {{not an integral constant}} \
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// ref-note {{dereferenced null}}
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static_assert(__builtin_strcmp(kFoobar, kFoobazfoobar) == -1, "");
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static_assert(__builtin_strcmp(kFoobar, kFoobazfoobar + 6) == 0, ""); // expected-error {{not an integral constant}} \
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// expected-note {{dereferenced one-past-the-end}} \
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// expected-note {{in call to}} \
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// ref-error {{not an integral constant}} \
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// ref-note {{dereferenced one-past-the-end}}
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}
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/// Copied from constant-expression-cxx11.cpp
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namespace strlen {
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constexpr const char *a = "foo\0quux";
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constexpr char b[] = "foo\0quux";
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constexpr int f() { return 'u'; }
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constexpr char c[] = { 'f', 'o', 'o', 0, 'q', f(), 'u', 'x', 0 };
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static_assert(__builtin_strlen("foo") == 3, "");
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static_assert(__builtin_strlen("foo\0quux") == 3, "");
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static_assert(__builtin_strlen("foo\0quux" + 4) == 4, "");
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constexpr bool check(const char *p) {
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return __builtin_strlen(p) == 3 &&
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__builtin_strlen(p + 1) == 2 &&
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__builtin_strlen(p + 2) == 1 &&
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__builtin_strlen(p + 3) == 0 &&
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__builtin_strlen(p + 4) == 4 &&
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__builtin_strlen(p + 5) == 3 &&
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__builtin_strlen(p + 6) == 2 &&
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__builtin_strlen(p + 7) == 1 &&
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__builtin_strlen(p + 8) == 0;
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}
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static_assert(check(a), "");
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static_assert(check(b), "");
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static_assert(check(c), "");
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constexpr int over1 = __builtin_strlen(a + 9); // expected-error {{constant expression}} \
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// expected-note {{one-past-the-end}} \
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// expected-note {{in call to}} \
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// ref-error {{constant expression}} \
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// ref-note {{one-past-the-end}}
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constexpr int over2 = __builtin_strlen(b + 9); // expected-error {{constant expression}} \
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// expected-note {{one-past-the-end}} \
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// expected-note {{in call to}} \
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// ref-error {{constant expression}} \
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// ref-note {{one-past-the-end}}
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constexpr int over3 = __builtin_strlen(c + 9); // expected-error {{constant expression}} \
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// expected-note {{one-past-the-end}} \
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// expected-note {{in call to}} \
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// ref-error {{constant expression}} \
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// ref-note {{one-past-the-end}}
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constexpr int under1 = __builtin_strlen(a - 1); // expected-error {{constant expression}} \
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// expected-note {{cannot refer to element -1}} \
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// ref-error {{constant expression}} \
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// ref-note {{cannot refer to element -1}}
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constexpr int under2 = __builtin_strlen(b - 1); // expected-error {{constant expression}} \
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// expected-note {{cannot refer to element -1}} \
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// ref-error {{constant expression}} \
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// ref-note {{cannot refer to element -1}}
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constexpr int under3 = __builtin_strlen(c - 1); // expected-error {{constant expression}} \
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// expected-note {{cannot refer to element -1}} \
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// ref-error {{constant expression}} \
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// ref-note {{cannot refer to element -1}}
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constexpr char d[] = { 'f', 'o', 'o' }; // no nul terminator.
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constexpr int bad = __builtin_strlen(d); // expected-error {{constant expression}} \
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// expected-note {{one-past-the-end}} \
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// expected-note {{in call to}} \
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// ref-error {{constant expression}} \
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// ref-note {{one-past-the-end}}
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}
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namespace nan {
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constexpr double NaN1 = __builtin_nan("");
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/// The current interpreter does not accept this, but it should.
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constexpr float NaN2 = __builtin_nans([](){return "0xAE98";}()); // ref-error {{must be initialized by a constant expression}}
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#if __cplusplus < 201703L
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// expected-error@-2 {{must be initialized by a constant expression}}
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#endif
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constexpr double NaN3 = __builtin_nan("foo"); // expected-error {{must be initialized by a constant expression}} \
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// ref-error {{must be initialized by a constant expression}}
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constexpr float NaN4 = __builtin_nanf("");
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//constexpr long double NaN5 = __builtin_nanf128("");
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/// FIXME: This should be accepted by the current interpreter as well.
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constexpr char f[] = {'0', 'x', 'A', 'E', '\0'};
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constexpr double NaN6 = __builtin_nan(f); // ref-error {{must be initialized by a constant expression}}
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/// FIXME: Current interpreter misses diagnostics.
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constexpr char f2[] = {'0', 'x', 'A', 'E'}; /// No trailing 0 byte.
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constexpr double NaN7 = __builtin_nan(f2); // ref-error {{must be initialized by a constant expression}} \
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// expected-error {{must be initialized by a constant expression}} \
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// expected-note {{read of dereferenced one-past-the-end pointer}} \
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// expected-note {{in call to}}
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}
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namespace fmin {
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constexpr float f1 = __builtin_fmin(1.0, 2.0f);
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static_assert(f1 == 1.0f, "");
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constexpr float min = __builtin_fmin(__builtin_nan(""), 1);
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static_assert(min == 1, "");
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constexpr float min2 = __builtin_fmin(1, __builtin_nan(""));
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static_assert(min2 == 1, "");
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constexpr float min3 = __builtin_fmin(__builtin_inf(), __builtin_nan(""));
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static_assert(min3 == __builtin_inf(), "");
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}
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namespace inf {
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static_assert(__builtin_isinf(__builtin_inf()), "");
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static_assert(!__builtin_isinf(1.0), "");
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static_assert(__builtin_isfinite(1.0), "");
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static_assert(!__builtin_isfinite(__builtin_inf()), "");
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static_assert(__builtin_isnormal(1.0), "");
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static_assert(!__builtin_isnormal(__builtin_inf()), "");
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}
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namespace isfpclass {
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char isfpclass_inf_pos_0[__builtin_isfpclass(__builtin_inf(), 0x0200) ? 1 : -1]; // fcPosInf
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char isfpclass_inf_pos_1[!__builtin_isfpclass(__builtin_inff(), 0x0004) ? 1 : -1]; // fcNegInf
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char isfpclass_inf_pos_2[__builtin_isfpclass(__builtin_infl(), 0x0207) ? 1 : -1]; // fcSNan|fcQNan|fcNegInf|fcPosInf
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char isfpclass_inf_pos_3[!__builtin_isfpclass(__builtin_inf(), 0x01F8) ? 1 : -1]; // fcFinite
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char isfpclass_pos_0 [__builtin_isfpclass(1.0, 0x0100) ? 1 : -1]; // fcPosNormal
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char isfpclass_pos_1 [!__builtin_isfpclass(1.0f, 0x0008) ? 1 : -1]; // fcNegNormal
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char isfpclass_pos_2 [__builtin_isfpclass(1.0L, 0x01F8) ? 1 : -1]; // fcFinite
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char isfpclass_pos_3 [!__builtin_isfpclass(1.0, 0x0003) ? 1 : -1]; // fcSNan|fcQNan
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#ifndef __AVR__
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char isfpclass_pdenorm_0[__builtin_isfpclass(1.0e-40f, 0x0080) ? 1 : -1]; // fcPosSubnormal
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char isfpclass_pdenorm_1[__builtin_isfpclass(1.0e-310, 0x01F8) ? 1 : -1]; // fcFinite
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char isfpclass_pdenorm_2[!__builtin_isfpclass(1.0e-40f, 0x003C) ? 1 : -1]; // fcNegative
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char isfpclass_pdenorm_3[!__builtin_isfpclass(1.0e-310, 0x0207) ? 1 : -1]; // ~fcFinite
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#endif
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char isfpclass_pzero_0 [__builtin_isfpclass(0.0f, 0x0060) ? 1 : -1]; // fcZero
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char isfpclass_pzero_1 [__builtin_isfpclass(0.0, 0x01F8) ? 1 : -1]; // fcFinite
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char isfpclass_pzero_2 [!__builtin_isfpclass(0.0L, 0x0020) ? 1 : -1]; // fcNegZero
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char isfpclass_pzero_3 [!__builtin_isfpclass(0.0, 0x0003) ? 1 : -1]; // fcNan
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char isfpclass_nzero_0 [__builtin_isfpclass(-0.0f, 0x0060) ? 1 : -1]; // fcZero
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char isfpclass_nzero_1 [__builtin_isfpclass(-0.0, 0x01F8) ? 1 : -1]; // fcFinite
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char isfpclass_nzero_2 [!__builtin_isfpclass(-0.0L, 0x0040) ? 1 : -1]; // fcPosZero
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char isfpclass_nzero_3 [!__builtin_isfpclass(-0.0, 0x0003) ? 1 : -1]; // fcNan
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char isfpclass_ndenorm_0[__builtin_isfpclass(-1.0e-40f, 0x0010) ? 1 : -1]; // fcNegSubnormal
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char isfpclass_ndenorm_2[!__builtin_isfpclass(-1.0e-40f, 0x03C0) ? 1 : -1]; // fcPositive
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#ifndef __AVR__
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char isfpclass_ndenorm_1[__builtin_isfpclass(-1.0e-310, 0x01F8) ? 1 : -1]; // fcFinite
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char isfpclass_ndenorm_3[!__builtin_isfpclass(-1.0e-310, 0x0207) ? 1 : -1]; // ~fcFinite
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#endif
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char isfpclass_neg_0 [__builtin_isfpclass(-1.0, 0x0008) ? 1 : -1]; // fcNegNormal
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char isfpclass_neg_1 [!__builtin_isfpclass(-1.0f, 0x00100) ? 1 : -1]; // fcPosNormal
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char isfpclass_neg_2 [__builtin_isfpclass(-1.0L, 0x01F8) ? 1 : -1]; // fcFinite
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char isfpclass_neg_3 [!__builtin_isfpclass(-1.0, 0x0003) ? 1 : -1]; // fcSNan|fcQNan
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char isfpclass_inf_neg_0[__builtin_isfpclass(-__builtin_inf(), 0x0004) ? 1 : -1]; // fcNegInf
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char isfpclass_inf_neg_1[!__builtin_isfpclass(-__builtin_inff(), 0x0200) ? 1 : -1]; // fcPosInf
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char isfpclass_inf_neg_2[__builtin_isfpclass(-__builtin_infl(), 0x0207) ? 1 : -1]; // ~fcFinite
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char isfpclass_inf_neg_3[!__builtin_isfpclass(-__builtin_inf(), 0x03C0) ? 1 : -1]; // fcPositive
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char isfpclass_qnan_0 [__builtin_isfpclass(__builtin_nan(""), 0x0002) ? 1 : -1]; // fcQNan
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char isfpclass_qnan_1 [!__builtin_isfpclass(__builtin_nanf(""), 0x0001) ? 1 : -1]; // fcSNan
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char isfpclass_qnan_2 [__builtin_isfpclass(__builtin_nanl(""), 0x0207) ? 1 : -1]; // ~fcFinite
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char isfpclass_qnan_3 [!__builtin_isfpclass(__builtin_nan(""), 0x01F8) ? 1 : -1]; // fcFinite
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char isfpclass_snan_0 [__builtin_isfpclass(__builtin_nansf(""), 0x0001) ? 1 : -1]; // fcSNan
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char isfpclass_snan_1 [!__builtin_isfpclass(__builtin_nans(""), 0x0002) ? 1 : -1]; // fcQNan
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char isfpclass_snan_2 [__builtin_isfpclass(__builtin_nansl(""), 0x0207) ? 1 : -1]; // ~fcFinite
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char isfpclass_snan_3 [!__builtin_isfpclass(__builtin_nans(""), 0x01F8) ? 1 : -1]; // fcFinite
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}
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namespace fpclassify {
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char classify_nan [__builtin_fpclassify(+1, -1, -1, -1, -1, __builtin_nan(""))];
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char classify_snan [__builtin_fpclassify(+1, -1, -1, -1, -1, __builtin_nans(""))];
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char classify_inf [__builtin_fpclassify(-1, +1, -1, -1, -1, __builtin_inf())];
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char classify_neg_inf [__builtin_fpclassify(-1, +1, -1, -1, -1, -__builtin_inf())];
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char classify_normal [__builtin_fpclassify(-1, -1, +1, -1, -1, 1.539)];
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#ifndef __AVR__
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char classify_normal2 [__builtin_fpclassify(-1, -1, +1, -1, -1, 1e-307)];
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char classify_denorm [__builtin_fpclassify(-1, -1, -1, +1, -1, 1e-308)];
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char classify_denorm2 [__builtin_fpclassify(-1, -1, -1, +1, -1, -1e-308)];
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#endif
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char classify_zero [__builtin_fpclassify(-1, -1, -1, -1, +1, 0.0)];
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char classify_neg_zero[__builtin_fpclassify(-1, -1, -1, -1, +1, -0.0)];
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char classify_subnorm [__builtin_fpclassify(-1, -1, -1, +1, -1, 1.0e-38f)];
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}
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namespace fabs {
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static_assert(__builtin_fabs(-14.0) == 14.0, "");
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}
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namespace std {
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struct source_location {
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struct __impl {
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unsigned int _M_line;
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const char *_M_file_name;
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signed char _M_column;
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const char *_M_function_name;
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};
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using BuiltinT = decltype(__builtin_source_location()); // OK.
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};
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}
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namespace SourceLocation {
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constexpr auto A = __builtin_source_location();
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static_assert(A->_M_line == __LINE__ -1, "");
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static_assert(A->_M_column == 22, "");
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static_assert(__builtin_strcmp(A->_M_function_name, "") == 0, "");
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static_assert(__builtin_strcmp(A->_M_file_name, __FILE__) == 0, "");
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static_assert(__builtin_LINE() == __LINE__, "");
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struct Foo {
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int a = __builtin_LINE();
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};
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static_assert(Foo{}.a == __LINE__, "");
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struct AA {
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int n = __builtin_LINE();
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};
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struct B {
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AA a = {};
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};
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constexpr void f() {
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constexpr B c = {};
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static_assert(c.a.n == __LINE__ - 1, "");
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}
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}
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