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During the ISO C++ Committee meeting plenary session the C++23 Standard has been voted as technical complete. This updates the reference to c++2b to c++23 and updates the __cplusplus macro. Drive-by fixes c++1z -> c++17 and c++2a -> c++20 when seen. Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D149553
29 lines
1.0 KiB
C++
29 lines
1.0 KiB
C++
// RUN: %clang_cc1 -verify -std=c++23 -Wall -Wshadow %s
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void f() {
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for (using foo = int;true;) {} //expected-warning {{unused type alias 'foo'}}
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switch(using foo = int; 0) { //expected-warning {{unused type alias 'foo'}}
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case 0: break;
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}
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if(using foo = int; false) {} // expected-warning {{unused type alias 'foo'}}
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int x; // expected-warning {{unused variable 'x'}}
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if(using x = int; true) {} // expected-warning {{unused type alias 'x'}}
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using y = int; // expected-warning {{unused type alias 'y'}} \
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// expected-note 2{{previous declaration is here}}
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if(using y = double; true) {} // expected-warning {{unused type alias 'y'}} \
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// expected-warning {{declaration shadows a type alias in function 'f'}}
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for(using y = double; true;) { // expected-warning {{declaration shadows a type alias in function 'f'}}
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y foo = 0;
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(void)foo;
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constexpr y var = 0;
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static_assert(var == 0);
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}
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}
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