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| author | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2017-05-11 06:20:07 +0000 |
|---|---|---|
| committer | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2017-05-11 06:20:07 +0000 |
| commit | ffeec21d4455a1f5fb5b2f85120dc14accd76125 (patch) | |
| tree | 3a58cbe45981a7e0ed2f06165bf02fee60bb781c /test/Sema | |
| parent | 5591bb23a469c5002ede29496ed289491f4b9859 (diff) | |
[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
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@302765 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Sema')
| -rw-r--r-- | test/Sema/redefinition-same-header.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/Sema/redefinition-same-header.c b/test/Sema/redefinition-same-header.c new file mode 100644 index 0000000000..d523edbf03 --- /dev/null +++ b/test/Sema/redefinition-same-header.c @@ -0,0 +1,14 @@ +// RUN: rm -rf %t +// RUN: mkdir -p %t +// RUN: echo 'int yyy = 42;' > %t/a.h +// RUN: %clang_cc1 -fsyntax-only %s -I%t -verify + +// expected-error@a.h:1 {{redefinition of 'yyy'}} +// expected-note@a.h:1 {{unguarded header; consider using #ifdef guards or #pragma once}} +// expected-note-re@redefinition-same-header.c:11 {{'{{.*}}/a.h' included multiple times, additional include site here}} +// expected-note-re@redefinition-same-header.c:12 {{'{{.*}}/a.h' included multiple times, additional include site here}} + +#include "a.h" +#include "a.h" + +int foo() { return yyy; } |