clang/test/CXX/lex/lex.literal/lex.ext/p1.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
   2
   3 void operator "" p31(long double); // expected-warning{{user-defined literal suffixes not starting with '_' are reserved}}
   4 void operator "" _p31(long double);
   5 long double operator "" pi(long double); // expected-warning{{user-defined literal suffixes not starting with '_' are reserved}}
   6
   7 float hexfloat = 0x1p31; // allow hexfloats