clang/test/Modules/home-is-cwd-search-paths.c

   1 // This test demonstrates how -fmodule-map-file-home-is-cwd with -fmodules-embed-all-files
   2 // extend the importer search paths by relying on the side effects of pragma diagnostic
   3 // mappings deserialization.
   4
   5 // RUN: rm -rf %t
   6 // RUN: split-file %s %t
   7
   8 //--- dir1/a.modulemap
   9 module a { header "a.h" }
  10 //--- dir1/a.h
  11 #include "search.h"
  12 // The first compilation is configured such that -I search does contain the search.h header.
  13 //--- dir1/search/search.h
  14 #pragma clang diagnostic push
  15 #pragma clang diagnostic ignored "-Wparentheses"
  16 #pragma clang diagnostic pop
  17 // RUN: cd %t/dir1 && %clang_cc1 -fmodules -I search \
  18 // RUN:   -emit-module -fmodule-name=a a.modulemap -o %t/a.pcm \
  19 // RUN:   -fmodules-embed-all-files -fmodule-map-file-home-is-cwd
  20
  21 //--- dir2/b.modulemap
  22 module b { header "b.h" }
  23 //--- dir2/b.h
  24 #include "search.h" // expected-error{{'search.h' file not found}}
  25 // The second compilation is configured such that -I search is an empty directory.
  26 // However, since b.pcm simply embeds the headers as "search/search.h", this compilation
  27 // ends up seeing it too. This relies solely on ASTReader::ReadPragmaDiagnosticMappings()
  28 // eagerly reading the corresponding INPUT_FILE record before header search happens.
  29 // Removing the eager deserialization makes this header invisible and so does removing
  30 // the pragma directives.
  31 // RUN: mkdir %t/dir2/search
  32 // RUN: cd %t/dir2 && %clang_cc1 -fmodules -I search \
  33 // RUN:   -emit-module -fmodule-name=b b.modulemap -o %t/b.pcm \
  34 // RUN:   -fmodule-file=%t/a.pcm -verify