clang/test/Modules/auto-import-unavailable.cpp

   1 // RUN: rm -rf %t
   2 // RUN: not %clang_cc1 -x c++ -Rmodule-build -DMISSING_HEADER -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs/auto-import-unavailable %s 2>&1 | FileCheck %s --check-prefix=MISSING-HEADER
   3 // RUN: %clang_cc1 -x c++ -Rmodule-build -DNONREQUIRED_MISSING_HEADER -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs/auto-import-unavailable %s 2>&1 | FileCheck %s --check-prefix=NONREQUIRED-MISSING-HEADER
   4 // RUN: not %clang_cc1 -x c++ -Rmodule-build -DMISSING_REQUIREMENT -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs/auto-import-unavailable %s 2>&1 | FileCheck %s --check-prefix=MISSING-REQUIREMENT
   5
   6 #ifdef MISSING_HEADER
   7
   8 // Even if the header we ask for is not missing, if the top-level module
   9 // containing it has a missing header, then the whole top-level is
  10 // unavailable and we issue an error.
  11
  12 // MISSING-HEADER: module.modulemap:2:27: error: header 'missing_header/missing.h' not found
  13 // MISSING-HEADER-DAG: auto-import-unavailable.cpp:[[@LINE+1]]:10: note: submodule of top-level module 'missing_header' implicitly imported here
  14 #include "missing_header/not_missing.h"
  15
  16 // We should not attempt to build the module.
  17 // MISSING-HEADER-NOT: remark: building module
  18
  19 #endif // #ifdef MISSING_HEADER
  20
  21
  22 #ifdef NONREQUIRED_MISSING_HEADER
  23
  24 // However, if the missing header is dominated by an unsatisfied
  25 // `requires`, then that is acceptable.
  26 // This also tests that an unsatisfied `requires` elsewhere in the
  27 // top-level module doesn't affect an available module.
  28
  29 // NONREQUIRED-MISSING-HEADER: auto-import-unavailable.cpp:[[@LINE+2]]:10: remark: building module 'nonrequired_missing_header'
  30 // NONREQUIRED-MISSING-HEADER: auto-import-unavailable.cpp:[[@LINE+1]]:10: remark: finished building module 'nonrequired_missing_header'
  31 #include "nonrequired_missing_header/not_missing.h"
  32
  33 #endif // #ifdef NONREQUIRED_MISSING_HEADER
  34
  35
  36 #ifdef MISSING_REQUIREMENT
  37
  38 // If the header is unavailable due to a missing requirement, an error
  39 // should be emitted if a user tries to include it.
  40
  41 // MISSING-REQUIREMENT:module.modulemap:16:8: error: module 'missing_requirement' requires feature 'nonexistent_feature'
  42 // MISSING-REQUIREMENT: auto-import-unavailable.cpp:[[@LINE+1]]:10: note: submodule of top-level module 'missing_requirement' implicitly imported here
  43 #include "missing_requirement.h"
  44
  45 // MISSING-REQUIREMENT-NOT: remark: building module
  46
  47 #endif // #ifdef MISSING_REQUIREMENT