[PATCH] D45603: Fix evaluation of `__has_include_next` during -frewrite-includes.

[Volodymyr Sapsai via Phabricator via cfe-commits]

vsapsai added a comment.

To simplify reviewing additions to the test, here is the corresponding output

  # 23 "/Users/vsapsai/Projects/llvm/llvm-project/clang/test/Frontend/rewrite-includes.c" 2
  #if 0 /* expanded by -frewrite-includes */
  #include "rewrite-includes9.h"
  #endif /* expanded by -frewrite-includes */
  # 23 "/Users/vsapsai/Projects/llvm/llvm-project/clang/test/Frontend/rewrite-includes.c"
  # 1 "/Users/vsapsai/Projects/llvm/llvm-project/clang/test/Frontend/Inputs/rewrite-includes9.h" 1
  #if (1)/*__has_include_next(<rewrite-includes9.h>)*/
  #if 0 /* expanded by -frewrite-includes */
  #include_next <rewrite-includes9.h>
  #endif /* expanded by -frewrite-includes */
  # 2 "/Users/vsapsai/Projects/llvm/llvm-project/clang/test/Frontend/Inputs/rewrite-includes9.h"
  # 1 "/Users/vsapsai/Projects/llvm/llvm-project/clang/test/Frontend/Inputs/NextIncludes/rewrite-includes9.h" 1
  included_line9
  # 3 "/Users/vsapsai/Projects/llvm/llvm-project/clang/test/Frontend/Inputs/rewrite-includes9.h" 2
  #endif
  # 4 "/Users/vsapsai/Projects/llvm/llvm-project/clang/test/Frontend/Inputs/rewrite-includes9.h"
  # 24 "/Users/vsapsai/Projects/llvm/llvm-project/clang/test/Frontend/rewrite-includes.c" 2



  #if 0 /* expanded by -frewrite-includes */
  #include "rewrite-includes9.h"
  #endif /* expanded by -frewrite-includes */
  #if (1)/*__has_include_next(<rewrite-includes9.h>)*/
  #if 0 /* expanded by -frewrite-includes */
  #include_next <rewrite-includes9.h>
  #endif /* expanded by -frewrite-includes */
  included_line9
  #endif


https://reviews.llvm.org/D45603