9710338a56
C++14 added user-defined literal support for complex numbers so that you can write something like "complex<double> val = 2i". However, there is an existing GNU extension supporting this syntax and interpreting the result as a _Complex type. This changes parsing so that such literals are interpreted in terms of C++14's operators if an overload is present but otherwise falls back to the original GNU extension. (We now have more robust diagnostics for implicit conversions so the libc++ test that caused the original revert still passes). llvm-svn: 310478
45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s -include %s -std=gnu++98
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// RUN: %clang_cc1 -fsyntax-only -verify %s -include %s -std=c++11
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// RUN: %clang_cc1 -fsyntax-only -verify %s -include %s -std=c++14 -DCXX14=1
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// expected-no-diagnostics
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#ifndef HEADER
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#define HEADER
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_Complex int val1 = 2i;
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_Complex long val2 = 2il;
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_Complex long long val3 = 2ill;
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_Complex float val4 = 2.0if;
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_Complex double val5 = 2.0i;
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_Complex long double val6 = 2.0il;
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#if CXX14
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#pragma clang system_header
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namespace std {
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template<typename T> struct complex {};
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complex<float> operator""if(unsigned long long);
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complex<float> operator""if(long double);
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complex<double> operator"" i(unsigned long long);
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complex<double> operator"" i(long double);
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complex<long double> operator"" il(unsigned long long);
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complex<long double> operator"" il(long double);
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}
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using namespace std;
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complex<float> f1 = 2.0if;
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complex<float> f2 = 2if;
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complex<double> d1 = 2.0i;
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complex<double> d2 = 2i;
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complex<long double> l1 = 2.0il;
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complex<long double> l2 = 2il;
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#endif
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#endif
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