clang/test/Parser/cxx-concepts-ambig-constraint-expr.cpp

   1 // RUN: %clang_cc1 -std=c++2a -x c++ %s -verify
   2
   3 // Test parsing of constraint-expressions in cases where the grammar is
   4 // ambiguous with the expectation that the longest token sequence which matches
   5 // the syntax is consumed without backtracking.
   6
   7 // type-specifier-seq in conversion-type-id
   8 template <typename T> requires T::operator short
   9 unsigned int foo(); // expected-error {{C++ requires a type specifier for all declarations}}