forked from OSchip/llvm-project
106 lines
3.7 KiB
C++
106 lines
3.7 KiB
C++
// RUN: %clang_cc1 -std=c++1z -fcxx-exceptions -fexceptions -verify -DTEST=1 %s
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// RUN: %clang_cc1 -std=c++1z -fcxx-exceptions -fexceptions -verify -DTEST=2 %s
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// RUN: %clang_cc1 -std=c++1z -fcxx-exceptions -fexceptions -verify -DTEST=3 %s
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// RUN: %clang_cc1 -std=c++1z -fcxx-exceptions -fexceptions -verify -DTEST=4 %s
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// RUN: %clang_cc1 -std=c++1z -fcxx-exceptions -fexceptions -verify -DTEST=5 %s
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#if TEST == 1
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auto test1a = __builtin_source_location(); // expected-error {{'std::source_location::__impl' was not found}}
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namespace std {
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inline namespace NS {
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struct source_location;
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}
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}
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auto test1b = __builtin_source_location(); // expected-error {{'std::source_location::__impl' was not found}}
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namespace std {
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inline namespace NS {
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struct source_location {
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struct __impl;
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};
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}
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}
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auto test1c = __builtin_source_location(); // expected-error {{'std::source_location::__impl' was not found}}
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#elif TEST == 2
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auto test2a = __builtin_source_location(); // expected-error {{'std::source_location::__impl' was not found}}
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namespace std {
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inline namespace NS {
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struct source_location {
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struct __impl { int x; };
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};
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}
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}
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auto test2b = __builtin_source_location(); // expected-error {{'std::source_location::__impl' must be standard-layout and have only two 'const char *' fields '_M_file_name' and '_M_function_name', and two integral fields '_M_line' and '_M_column'}}
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#elif TEST == 3
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namespace std {
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struct source_location {
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struct __impl {
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int other_member;
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char _M_line;
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const char *_M_file_name;
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char _M_column;
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const char *_M_function_name;
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};
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};
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}
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auto test3 = __builtin_source_location(); // expected-error {{'std::source_location::__impl' must be standard-layout and have only two 'const char *' fields '_M_file_name' and '_M_function_name', and two integral fields '_M_line' and '_M_column'}}
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#elif TEST == 4
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namespace std {
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struct source_location {
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struct parent {};
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struct __impl : public parent {
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char _M_line;
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const char *_M_file_name;
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char _M_column;
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const char *_M_function_name;
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};
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};
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}
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auto test4 = __builtin_source_location(); // expected-error {{'std::source_location::__impl' must be standard-layout and have only two 'const char *' fields '_M_file_name' and '_M_function_name', and two integral fields '_M_line' and '_M_column'}}
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#elif TEST == 5
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namespace std {
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struct source_location {
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struct __impl {
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signed char _M_line; // odd integral type to choose, but ok!
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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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static int other_member; // static members are OK
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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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// Verify that the address cannot be used as a non-type template argument.
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template <auto X = __builtin_source_location()>
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auto fn1() {return X;} // expected-note {{candidate template ignored: substitution failure: non-type template argument does not refer to any declaration}}
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auto test5a = fn1<>(); // expected-error {{no matching function for call to 'fn1'}}
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// (But using integer subobjects by value is okay.)
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template <auto X = __builtin_source_location()->_M_column>
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auto fn2() {return X;}
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auto test5b = fn2<>();
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// While it's not semantically required, for efficiency, we ensure that two
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// source-locations with the same content will point to the same object. Given
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// the odd definition of the struct used here (using 'signed char'), any
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// line-number modulo 256 will thus have the same content, and be deduplicated.
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#line 128
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constexpr auto sl1 = __builtin_source_location();
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#line 384
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constexpr auto sl2 = __builtin_source_location();
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constexpr auto sl3 = __builtin_source_location();
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static_assert(sl1 == sl2);
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static_assert(sl1 != sl3);
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static_assert(sl1->_M_line == -128);
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#endif
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