These are identified by misc-include-cleaner. I've filtered out those
that break builds. Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.
This patch provides more information to the
`PPCallbacks::InclusionDirective()` hook. We now always pass the
suggested module, regardless of whether it was actually imported or not.
The extra `bool ModuleImported` parameter then denotes whether the
header `#include` will be automatically translated into import the the
module.
The main change is in `clang/lib/Lex/PPDirectives.cpp`, where we take
care to not modify `SuggestedModule` after it's been populated by
`LookupHeaderIncludeOrImport()`. We now exclusively use the `SM`
(`ModuleToImport`) variable instead, which has been equivalent to
`SuggestedModule` until now. This allows us to use the original
non-modified `SuggestedModule` for the callback itself.
(This patch turns out to be necessary for
https://github.com/apple/llvm-project/pull/8011).
The needed tweaks are mostly trivial, the one nasty bit is Clang's usage
of OptionalStorage. To keep this working old Optional stays around as
clang::CustomizableOptional, with the default Storage removed.
Optional<File/DirectoryEntryRef> is replaced with a typedef.
I tested this with GCC 7.5, the oldest supported GCC I had around.
Differential Revision: https://reviews.llvm.org/D140332
This reverts commit 8f0df9f3bbc6d7f3d5cbfd955c5ee4404c53a75d.
The Optional*RefDegradesTo*EntryPtr types want to keep the same size as
the underlying type, which std::optional doesn't guarantee. For use with
llvm::Optional, they define their own storage class, and there is no way
to do that in std::optional.
On top of that, that commit broke builds with older GCCs, where
std::optional was not trivially copyable (static_assert in the clang
sources was failing).
The end-user has no way of 'fixing' bugs in the system library anyway.
Let's suppress these as well.
Reviewed By: LegalizeAdulthood
Differential Revision: https://reviews.llvm.org/D125770
Unfortunately, we must restrict the checker to warn for deprecated headers
only if the header is included directly from a c++ source file.
For header files, we cannot know if the project has a C source file
that also directly/indirectly includes the offending header file
otherwise. Thus, it's better to be on the safe side and suppress those
reports.
One can opt-in the old behavior, emitting diagnostics into header files,
if one explicitly sets the WarnIntoHeaders=true, in which case nothing
will be changed.
Reviewed By: LegalizeAdulthood
Differential Revision: https://reviews.llvm.org/D125769
This partially reverts commit e8cae487022c2216182ae1ec24f248f287a614b7.
Changes since that commit:
- Use `SourceManager::isBeforeInTranslationUnit` instead of the fancy
decomposed decl logarithmic search.
- Add a test for including a system header containing a deprecated
include.
- Add `REQUIRES: system-linux` clause to the test.
Reviewed By: LegalizeAdulthood, whisperity
Differential Revision: https://reviews.llvm.org/D125209
The check should not report includes wrapped by `extern "C" { ... }` blocks,
such as:
```lang=C++
#ifdef __cplusplus
extern "C" {
#endif
#include "assert.h"
#ifdef __cplusplus
}
#endif
```
This pattern comes up sometimes in header files designed to be consumed
by both C and C++ source files.
The check now reports false reports when the header file is consumed by
a C++ translation unit.
In this change, I'm not emitting the reports immediately from the
`PPCallback`, rather aggregating them for further processing.
After all preprocessing is done, the matcher will be called on the
`TranslationUnitDecl`, ensuring that the check callback is called only
once.
Within that callback, I'm recursively visiting each decls, looking for
`LinkageSpecDecls` which represent the `extern "C"` specifier.
After this, I'm dropping all the reports coming from inside of it.
After the visitation is done, I'm emitting the reports I'm left with.
For performance reasons, I'm sorting the `IncludeMarkers` by their
corresponding locations.
This makes the scan `O(log(N)` when looking up the `IncludeMarkers`
affected by the given `extern "C"` block. For this, I'm using
`lower_bound()` and `upper_bound()`.
Reviewed By: whisperity
Differential Revision: https://reviews.llvm.org/D125209
This patch changes type of the `File` parameter in `PPCallbacks::InclusionDirective()` from `const FileEntry *` to `Optional<FileEntryRef>`.
With the API change in place, this patch then removes some uses of the deprecated `FileEntry::getName()` (e.g. in `DependencyGraph.cpp` and `ModuleDependencyCollector.cpp`).
Reviewed By: dexonsmith, bnbarham
Differential Revision: https://reviews.llvm.org/D123574
Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of (hopefully) all the llvm::make_unique instances across the monorepo.
Differential revision: https://reviews.llvm.org/D66259
llvm-svn: 368944
to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
This commit relands r331905.
r331904 added SrcMgr::CharacteristicKind to the InclusionDirective
callback, this revision updates instances of it in clang-tools-extra.
llvm-svn: 332023
[revision] added SrcMgr::CharacteristicKind to the InclusionDirective
callback, this revision updates instances of it in clang-tools-extra.
Differential Revision: https://reviews.llvm.org/D46615
llvm-svn: 331905
This patch introduces a minor list of changes as proposed by Richard Smith in
the mailing list.
See original comments with an impact on the future check state below:
[comments.begin
> + {"complex.h", "ccomplex"},
It'd be better to convert this one to <complex>, or leave it alone.
<ccomplex> is an unnecessary wart.
(The contents of C++11's <complex.h> / <ccomplex> / <complex> (all of
which are identical) aren't comparable to C99's <complex.h>, so if
this was C++98 code using the C99 header, the code will be broken with
or without this transformation.)
> + {"iso646.h", "ciso646"},
Just delete #includes of this one. <ciso646> does nothing.
> + {"stdalign.h", "cstdalign"},
> + {"stdbool.h", "cstdbool"},
We should just delete these two includes. These headers do nothing in C++.
comments.end]
Reviewers: alexfh, aaron.ballman
Differential Revision: https://reviews.llvm.org/D17990
llvm-svn: 278254
Summary:
This patch introduces the modernize-deprecated-headers check, which is supposed to replace deprecated C library headers with the C++ STL-ones.
For information see documentation; for exmaples see the test cases.
Reviewers: Eugene.Zelenko, LegalizeAdulthood, alexfh
Subscribers: cfe-commits
Patch by Kirill Bobyrev!
Differential Revision: http://reviews.llvm.org/D17484
llvm-svn: 261738
