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874217f99b
This also ignores and deprecates the `-fdouble-square-bracket-attributes` command line flag, which seems to not be used anywhere. At least a code search exclusively found mentions of it in documentation: https://sourcegraph.com/search?q=context:global+-fdouble-square-bracket-attributes+-file:clang/*+-file:test/Sema/*+-file:test/Parser/*+-file:test/AST/*+-file:test/Preprocessor/*+-file:test/Misc/*+archived:yes&patternType=standard&sm=0&groupBy=repo RFC: https://discourse.llvm.org/t/rfc-enable-c-11-c2x-attributes-in-all-standard-modes-as-an-extension-and-remove-fdouble-square-bracket-attributes This enables `[[]]` attributes in all C and C++ language modes without warning by default. `-Wc++-extensions` does warn. GCC has enabled this extension in all C modes since GCC 10. Reviewed By: aaron.ballman, MaskRay Spies: #clang-vendors, beanz, JDevlieghere, Michael137, MaskRay, sstefan1, jplehr, cfe-commits, lldb-commits, dmgreen, jdoerfert, wenlei, wlei Differential Revision: https://reviews.llvm.org/D151683
12 lines
650 B
C++
12 lines
650 B
C++
// RUN: %clang_cc1 -fsyntax-only -std=c++98 -Wc++11-extensions -verify %s
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long long ll1 = // expected-warning {{'long long' is a C++11 extension}}
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-42LL; // expected-warning {{'long long' is a C++11 extension}}
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unsigned long long ull1 = // expected-warning {{'long long' is a C++11 extension}}
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42ULL; // expected-warning {{'long long' is a C++11 extension}}
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enum struct E1 { A, B }; // expected-warning {{scoped enumerations are a C++11 extension}}
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enum class E2 { C, D }; // expected-warning {{scoped enumerations are a C++11 extension}}
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[[]] void func(); // expected-warning {{[[]] attributes are a C++11 extension}}
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