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llvm-project/clang/test/Modules/redefinition-same-header.m

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[Sema] Improve redefinition errors pointing to the same header Diagnostics related to redefinition errors that point to the same header file do not provide much information that helps users fixing the issue. - In the modules context, it usually happens because of non modular includes. - When modules aren't involved it might happen because of the lack of header guards. Enhance diagnostics in these scenarios. Differential Revision: https://reviews.llvm.org/D28832 rdar://problem/31669175 llvm-svn: 302765
2017-05-11 14:20:07 +08:00
// RUN: rm -rf %t.tmp
// RUN: %clang_cc1 -fsyntax-only -I %S/Inputs/SameHeader -fmodules \
// RUN: -fimplicit-module-maps -fmodules-cache-path=%t.tmp %s -verify
// expected-error@Inputs/SameHeader/C.h:3 {{redefinition of 'c'}}
Make tests from r302765 windows friendly and appease: http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/2030 llvm-svn: 302771
2017-05-11 15:06:52 +08:00
// expected-note-re@Inputs/SameHeader/B.h:3 {{'{{.*}}C.h' included multiple times, additional include site in header from module 'X.B'}}
[Sema] Improve redefinition errors pointing to the same header Diagnostics related to redefinition errors that point to the same header file do not provide much information that helps users fixing the issue. - In the modules context, it usually happens because of non modular includes. - When modules aren't involved it might happen because of the lack of header guards. Enhance diagnostics in these scenarios. Differential Revision: https://reviews.llvm.org/D28832 rdar://problem/31669175 llvm-svn: 302765
2017-05-11 14:20:07 +08:00
// expected-note@Inputs/SameHeader/module.modulemap:6 {{X.B defined here}}
Make tests from r302765 windows friendly and appease: http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/2030 llvm-svn: 302771
2017-05-11 15:06:52 +08:00
// expected-note-re@redefinition-same-header.m:20 {{'{{.*}}C.h' included multiple times, additional include site here}}
[Modules] Implement ODR-like semantics for tag types in C/ObjC Allow ODR for ObjC/C in the sense that we won't keep more that one definition around (merge them). However, ensure the decl pass the structural compatibility check in C11 6.2.7/1, for that, reuse the structural equivalence checks used by the ASTImporter. Few other considerations: - Create error diagnostics for tag types mismatches and thread them into the structural equivalence checks. - Note that by doing this we only support redefinition between types that are considered "compatible types" by C. This is mixed approach of the suggestions discussed in http://lists.llvm.org/pipermail/cfe-dev/2017-March/053257.html Differential Revision: https://reviews.llvm.org/D31778 rdar://problem/31909368 llvm-svn: 306918
2017-07-01 08:06:47 +08:00
// expected-warning@Inputs/SameHeader/C.h:9 {{typedef requires a name}}
[Sema] Improve redefinition errors pointing to the same header Diagnostics related to redefinition errors that point to the same header file do not provide much information that helps users fixing the issue. - In the modules context, it usually happens because of non modular includes. - When modules aren't involved it might happen because of the lack of header guards. Enhance diagnostics in these scenarios. Differential Revision: https://reviews.llvm.org/D28832 rdar://problem/31669175 llvm-svn: 302765
2017-05-11 14:20:07 +08:00
#include "A.h" // maps to a modular
#include "C.h" // textual include