clang/test/Lexer/update_consecutive_macro_crash.cpp

   1 // RUN: %clang -cc1 -fsyntax-only -verify %s 2>&1
   2
   3 #define X(val2) Y(val2++) // expected-note {{macro 'X' defined here}}
   4 #define Y(expression) expression ;
   5
   6 void foo() {
   7   // https://github.com/llvm/llvm-project/issues/60722:
   8   //
   9   // - Due to to the error recovery, the lexer inserts a pair of () around the
  10   //   macro argument int{,}, so we will see [(, int, {, ,, }, )] tokens.
  11   // - however, the size of file id for the macro argument only takes account
  12   //   the written tokens  int{,} , and the extra inserted ) token points to the
  13   //    Limit source location which triggered an empty Partition violation.
  14   X(int{,}); // expected-error {{too many arguments provided to function-like macro invocation}} \
  15                  expected-error {{expected expression}} \
  16                  expected-note {{parentheses are required around macro argument containing braced initializer list}}
  17 }