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      1 // RUN: %clang_cc1 -std=c++98 -fsyntax-only -verify -pedantic %s
      2 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify -pedantic %s
      3 // RUN: %clang_cc1 -std=c++14 -fsyntax-only -verify -pedantic %s
      4 // RUN: %clang_cc1 -std=c++1z -fsyntax-only -verify -pedantic %s
      5 double e = 0x.p0; // expected-error-re {{hexadecimal floating {{constant|literal}} requires a significand}}
      6 
      7 float f = 0x1p+1;
      8 double d = 0x.2p2;
      9 float g = 0x1.2p2;
     10 double h = 0x1.p2;
     11 #if __cplusplus <= 201402L
     12 // expected-warning@-5 {{hexadecimal floating literals are a C++1z feature}}
     13 // expected-warning@-5 {{hexadecimal floating literals are a C++1z feature}}
     14 // expected-warning@-5 {{hexadecimal floating literals are a C++1z feature}}
     15 // expected-warning@-5 {{hexadecimal floating literals are a C++1z feature}}
     16 #endif
     17 
     18 // PR12717: In order to minimally diverge from the C++ standard, we do not lex
     19 // 'p[+-]' as part of a pp-number unless the token starts 0x and doesn't contain
     20 // an underscore.
     21 double i = 0p+3; // expected-error {{invalid suffix 'p' on integer constant}}
     22 #define PREFIX(x) foo ## x
     23 double foo0p = 1, j = PREFIX(0p+3); // ok
     24 double k = 0x42_amp+3;
     25 #if __cplusplus > 201402L
     26 // expected-error@-2 {{no matching literal operator for call to 'operator""_amp+3'}}
     27 #elif __cplusplus >= 201103L
     28 // expected-error@-4 {{no matching literal operator for call to 'operator""_amp'}}
     29 #else
     30 // expected-error@-6 {{invalid suffix '_amp' on integer constant}}
     31 #endif
     32