(22009 characters) This is something a beginner might actually run into:
Ungolfed:
#include <array>#include <iostream>int main() { std::cout << std::array{1, 2, 3};}Golfed:
#include <array>#include <iostream>main(){std::cout<<std::array{1};}Compiled with Homebrew GCC 12.1 on MacOS 12.4, with no options.Error:
delete.cpp:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 3 | main(){std::cout<<std::array{1};} | ^~~~delete.cpp: In function 'int main()':delete.cpp:3:17: error: no match for 'operator<<' (operand types are 'std::ostream' {aka 'std::basic_ostream<char>'} and 'std::array<int, 1>') 3 | main(){std::cout<<std::array{1};} | ~~~~~~~~~^~ ~~~~~~~~ | | | | | std::array<int, 1> | std::ostream {aka std::basic_ostream<char>}In file included from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/iostream:39, from delete.cpp:2:/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:108:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(__ostream_type& (*)(__ostream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 108 | operator<<(__ostream_type& (*__pf)(__ostream_type&)) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:108:36: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'std::basic_ostream<char>::__ostream_type& (*)(std::basic_ostream<char>::__ostream_type&)' {aka 'std::basic_ostream<char>& (*)(std::basic_ostream<char>&)'} 108 | operator<<(__ostream_type& (*__pf)(__ostream_type&)) | ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:117:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(__ios_type& (*)(__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>; __ios_type = std::basic_ios<char>]' 117 | operator<<(__ios_type& (*__pf)(__ios_type&)) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:117:32: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'std::basic_ostream<char>::__ios_type& (*)(std::basic_ostream<char>::__ios_type&)' {aka 'std::basic_ios<char>& (*)(std::basic_ios<char>&)'} 117 | operator<<(__ios_type& (*__pf)(__ios_type&)) | ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:127:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 127 | operator<<(ios_base& (*__pf) (ios_base&)) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:127:30: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'std::ios_base& (*)(std::ios_base&)' 127 | operator<<(ios_base& (*__pf) (ios_base&)) | ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:166:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long int) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 166 | operator<<(long __n) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:166:23: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'long int' 166 | operator<<(long __n) | ~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:170:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 170 | operator<<(unsigned long __n) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:170:32: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'long unsigned int' 170 | operator<<(unsigned long __n) | ~~~~~~~~~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:174:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(bool) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 174 | operator<<(bool __n) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:174:23: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'bool' 174 | operator<<(bool __n) | ~~~~~^~~In file included from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:833:/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ostream.tcc:91:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(short int) [with _CharT = char; _Traits = std::char_traits<char>]' 91 | basic_ostream<_CharT, _Traits>:: | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ostream.tcc:92:22: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'short int' 92 | operator<<(short __n) | ~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:181:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(short unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 181 | operator<<(unsigned short __n) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:181:33: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'short unsigned int' 181 | operator<<(unsigned short __n) | ~~~~~~~~~~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ostream.tcc:105:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(int) [with _CharT = char; _Traits = std::char_traits<char>]' 105 | basic_ostream<_CharT, _Traits>:: | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ostream.tcc:106:20: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'int' 106 | operator<<(int __n) | ~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:192:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 192 | operator<<(unsigned int __n) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:192:31: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'unsigned int' 192 | operator<<(unsigned int __n) | ~~~~~~~~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:201:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 201 | operator<<(long long __n) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:201:28: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'long long int' 201 | operator<<(long long __n) | ~~~~~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:205:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long unsigned int) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 205 | operator<<(unsigned long long __n) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:205:37: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'long long unsigned int' 205 | operator<<(unsigned long long __n) | ~~~~~~~~~~~~~~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:220:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(double) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 220 | operator<<(double __f) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:220:25: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'double' 220 | operator<<(double __f) | ~~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:224:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(float) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 224 | operator<<(float __f) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:224:24: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'float' 224 | operator<<(float __f) | ~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:232:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long double) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 232 | operator<<(long double __f) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:232:30: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'long double' 232 | operator<<(long double __f) | ~~~~~~~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:245:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(const void*) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>]' 245 | operator<<(const void* __p) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:245:30: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'const void*' 245 | operator<<(const void* __p) | ~~~~~~~~~~~~^~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:250:7: note: candidate: 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::nullptr_t) [with _CharT = char; _Traits = std::char_traits<char>; __ostream_type = std::basic_ostream<char>; std::nullptr_t = std::nullptr_t]' 250 | operator<<(nullptr_t) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:250:18: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'std::nullptr_t' 250 | operator<<(nullptr_t) | ^~~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ostream.tcc:119:5: note: candidate: 'std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; __streambuf_type = std::basic_streambuf<char>]' 119 | basic_ostream<_CharT, _Traits>:: | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ostream.tcc:120:34: note: no known conversion for argument 1 from 'std::array<int, 1>' to 'std::basic_ostream<char>::__streambuf_type*' {aka 'std::basic_streambuf<char>*'} 120 | operator<<(__streambuf_type* __sbin) | ~~~~~~~~~~~~~~~~~~^~~~~~In file included from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/basic_string.h:48, from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/string:53, from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/locale_classes.h:40, from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ios_base.h:41, from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ios:4, from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:38:/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/string_view:672:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, basic_string_view<_CharT, _Traits>)' 672 | operator<<(basic_ostream<_CharT, _Traits>& __os, | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/string_view:672:5: note: template argument deduction/substitution failed:delete.cpp:3:31: note: 'std::array<int, 1>' is not derived from 'std::basic_string_view<_CharT, _Traits>' 3 | main(){std::cout<<std::array{1};} | ^/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/basic_string.h:3883:5:note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)' 3883 | operator<<(basic_ostream<_CharT, _Traits>& __os, | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/basic_string.h:3883:5:note: template argument deduction/substitution failed:delete.cpp:3:31: note: 'std::array<int, 1>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' 3 | main(){std::cout<<std::array{1};} | ^In file included from /opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ios_base.h:46:/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/system_error:279:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const error_code&)' 279 | operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/system_error:279:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'const std::error_code&' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:507:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _CharT)' 507 | operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:507:5: note: template argument deduction/substitution failed:delete.cpp:3:31: note: deduced conflicting types for parameter '_CharT' ('cha' and 'std::array<int, 1>') 3 | main(){std::cout<<std::array{1};} | ^/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:517:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, char)' 517 | operator<<(basic_ostream<_CharT, _Traits>& __out, char __c) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:517:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'char' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:523:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, char)' 523 | operator<<(basic_ostream<char, _Traits>& __out, char __c) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:523:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'char' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:534:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, signed char)' 534 | operator<<(basic_ostream<char, _Traits>& __out, signed char __c) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:534:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'signed char' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:539:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, unsigned char)' 539 | operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:539:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'unsigned char' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:598:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const _CharT*)' 598 | operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:598:5: note: template argument deduction/substitution failed:delete.cpp:3:31: note: mismatched types 'const _CharT*' and 'std::array<int, 1>' 3 | main(){std::cout<<std::array{1};} | ^/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ostream.tcc:302:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const char*)' 302 | operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/bits/ostream.tcc:302:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'const char*' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:615:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const char*)' 615 | operator<<(basic_ostream<char, _Traits>& __out, const char* __s) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:615:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'const char*' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:628:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const signed char*)' 628 | operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:628:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'const signed char*' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:633:5: note: candidate: 'template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const unsigned char*)' 633 | operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:633:5: note: template argument deduction/substitution failed:delete.cpp:3:24: note: cannot convert 'std::array<int, 1>{std::__array_traits<int, 1>::_Type{1}}' (type 'std::array<int, 1>') to type 'const unsigned char*' 3 | main(){std::cout<<std::array{1};} | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:754:5: note: candidate: 'template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&)' 754 | operator<<(_Ostream&& __os, const _Tp& __x) | ^~~~~~~~/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:754:5: note: template argument deduction/substitution failed:/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream: In substitution of 'template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&) [with _Ostream = std::basic_ostream<char>&; _Tp = std::array<int, 1>]':delete.cpp:3:31: required from here/opt/homebrew/Cellar/gcc@12/12.1.0_1/include/c++/12/ostream:754:5: error: no type named 'type' in 'struct std::enable_if<false, void>'Another one, just to see what happens when you redefine important functions.
#define write std::array#define memcpy printf#include <iostream>Compiled with Apple Clang 13.1.6 on macOS 12.4, with no options.
Error (18212 characters):
In file included from delete.cpp:4:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:37:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ios:214:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__locale:15:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/string:522:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/algorithm:652:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/cstring:60:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/string.h:60:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/string.h:72:7: error: functions that differ only in their return type cannot be overloadedvoid *memcpy(void *__dst, const void *__src, size_t __n);~~~~~~~~~^delete.cpp:3:16: note: expanded from macro 'memcpy'#define memcpy cout ^delete.cpp:2:14: note: expanded from macro 'cout'#define cout printf ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdio.h:170:6: note: previous declaration is hereint printf(const char * __restrict, ...) __printflike(1, 2);~~~ ^In file included from delete.cpp:4:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:37:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ios:214:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__locale:15:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/string:522:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/algorithm:653:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/functional:500:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/function.h:22:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/memory:799:23: error: cannot initialize a parameter of type 'const char *' with an rvalue of type 'void *' _VSTD::memcpy(static_cast<void*>(__end2), static_cast<void const*>(__begin1), _Np * sizeof(_Tp)); ^~~~~~~~~~~~~~~~~~~~~~~~~~/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdio.h:170:36: note: passing argument to parameter hereint printf(const char * __restrict, ...) __printflike(1, 2); ^In file included from delete.cpp:4:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:38:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/istream:163:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:221:20: error: non-friend class member 'array' cannot have a qualified name basic_ostream& write(const char_type* __s, streamsize __n); ^~~~~delete.cpp:1:20: note: expanded from macro 'write'#define write std::array ~~~~~^In file included from delete.cpp:4:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:38:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/istream:163:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:905:45: error: unknown type name 'char_type'basic_ostream<_CharT, _Traits>::write(const char_type* __s, streamsize __n) ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:905:33: error: nested name specifier 'basic_ostream<_CharT, _Traits>::std::' for declaration does not refer into a class, class template or class template partial specializationbasic_ostream<_CharT, _Traits>::write(const char_type* __s, streamsize __n)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~delete.cpp:1:20: note: expanded from macro 'write'#define write std::array ^In file included from delete.cpp:4:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:38:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/istream:163:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:911:9: error: unknown type name 'sentry' sentry __sen(*this); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:911:23: error: invalid use of 'this' outside of a non-static member function sentry __sen(*this); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:912:22: error: use of undeclared identifier '__n' if (__sen && __n) ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:914:17: error: invalid use of 'this' outside of a non-static member function if (this->rdbuf()->sputn(__s, __n) != __n) ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:914:38: error: use of undeclared identifier '__s' if (this->rdbuf()->sputn(__s, __n) != __n) ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:914:43: error: use of undeclared identifier '__n' if (this->rdbuf()->sputn(__s, __n) != __n) ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:914:51: error: use of undeclared identifier '__n' if (this->rdbuf()->sputn(__s, __n) != __n) ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:915:17: error: invalid use of 'this' outside of a non-static member function this->setstate(ios_base::badbit); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:921:9: error: invalid use of 'this' outside of a non-static member function this->__set_badbit_and_consider_rethrow(); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ostream:924:13: error: invalid use of 'this' outside of a non-static member function return *this; ^In file included from delete.cpp:4:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:55:33: error: declaration conflicts with target of using declaration already in scopeextern _LIBCPP_FUNC_VIS ostream cout; ^delete.cpp:2:14: note: expanded from macro 'cout'#define cout printf ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdio.h:170:6: note: target of using declarationint printf(const char * __restrict, ...) __printflike(1, 2); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/cstdio:169:9: note: using declarationusing ::printf _LIBCPP_USING_IF_EXISTS; ^In file included from delete.cpp:4:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:37:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ios:214:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__locale:15:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/string:522:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/algorithm:653:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/functional:500:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/function.h:20:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/shared_ptr.h:25:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/unique_ptr.h:15:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:40:19: error: cannot initialize a parameter of type 'const char *' with an rvalue of type 'unsigned int *' _VSTD::memcpy(&__r, __p, sizeof(__r)); ^~~~/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:138:28: note: in instantiation of function template specialization 'std::__loadword<unsigned int>' requested here const uint32_t __a = __loadword<uint32_t>(__s); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:229:14: note: in instantiation of member function 'std::__murmur2_or_cityhash<unsigned long, 64>::__hash_len_0_to_16' requested here return __hash_len_0_to_16(__s, __len); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:347:16: note: in instantiation of member function 'std::__murmur2_or_cityhash<unsigned long, 64>::operator()' requested here return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:421:20: note: in instantiation of member function 'std::__scalar_hash<std::_PairT, 2>::operator()' requested here return _HashT()(__p); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdio.h:170:36: note: passing argument to parameter hereint printf(const char * __restrict, ...) __printflike(1, 2); ^In file included from delete.cpp:4:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:37:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ios:214:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__locale:15:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/string:522:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/algorithm:653:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/functional:500:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/function.h:20:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/shared_ptr.h:25:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/unique_ptr.h:15:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:40:19: error: cannot initialize a parameter of type 'const char *' with an rvalue of type 'unsigned long *' _VSTD::memcpy(&__r, __p, sizeof(__r)); ^~~~/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:239:15: note: in instantiation of function template specialization 'std::__loadword<unsigned long>' requested here _Size __x = __loadword<_Size>(__s + __len - 40); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:347:16: note: in instantiation of member function 'std::__murmur2_or_cityhash<unsigned long, 64>::operator()' requested here return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:421:20: note: in instantiation of member function 'std::__scalar_hash<std::_PairT, 2>::operator()' requested here return _HashT()(__p); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdio.h:170:36: note: passing argument to parameter hereint printf(const char * __restrict, ...) __printflike(1, 2); ^In file included from delete.cpp:4:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:37:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ios:214:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__locale:15:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/string:522:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/algorithm:653:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/functional:500:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/function.h:20:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/shared_ptr.h:25:In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/unique_ptr.h:15:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:185:42: error: no matching function for call to '__loadword' return __weak_hash_len_32_with_seeds(__loadword<_Size>(__s), ^~~~~~~~~~~~~~~~~/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:244:28: note: in instantiation of member function 'std::__murmur2_or_cityhash<unsigned long, 64>::__weak_hash_len_32_with_seeds' requested here pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:347:16: note: in instantiation of member function 'std::__murmur2_or_cityhash<unsigned long, 64>::operator()' requested here return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:421:20: note: in instantiation of member function 'std::__scalar_hash<std::_PairT, 2>::operator()' requested here return _HashT()(__p); ^/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__functional/hash.h:37:1: note: candidate template ignored: substitution failure [with _Size = unsigned long]__loadword(const void* __p)^fatal error: too many errors emitted, stopping now [-ferror-limit=]20 errors generated.