clang/test/Modules/cxx20-hu-05.cpp

   1 // Test macro preservation in C++20 Header Units.
   2
   3 // RUN: rm -rf %t
   4 // RUN: mkdir -p %t
   5 // RUN: split-file %s %t
   6 // RUN: cd %t
   7
   8 // Produce a pre-processed file.
   9 // RUN: %clang_cc1 -std=c++20 -E -xc++-user-header hu-01.h -o hu-01.iih
  10
  11 // consume that to produce the heder unit.
  12 // RUN: %clang_cc1 -std=c++20 -emit-header-unit \
  13 // RUN: -xc++-header-unit-header-cpp-output hu-01.iih -o hu-01.pcm
  14
  15 // check that the header unit is named for the original file, not the .iih.
  16 // RUN: %clang_cc1 -std=c++20 -module-file-info hu-01.pcm | \
  17 // RUN: FileCheck --check-prefix=CHECK-HU %s -DTDIR=%t
  18
  19 //--- hu-01.h
  20 #ifndef __GUARD
  21 #define __GUARD
  22
  23 int baz(int);
  24 #define FORTYTWO 42
  25
  26 #define SHOULD_NOT_BE_DEFINED -1
  27 #undef SHOULD_NOT_BE_DEFINED
  28
  29 #endif // __GUARD
  30
  31 // CHECK-HU:  ====== C++20 Module structure ======
  32 // CHECK-HU-NEXT:  Header Unit '.{{/|\\\\?}}hu-01.h' is the Primary Module at index #1