Without this fix we get
../../clang-tools-extra/unittests/clang-tidy/ModernizeModuleTest.cpp:270:2: error: extra ';' outside of a function is incompatible with C++98 [-Werror,-Wc++98-compat-extra-semi]
};
^
1 error generated.
when compiling with -Werror.
C requires that enum values fit into an int. Scan the macro tokens
present in an initializing expression and reject macros that contain
tokens that have suffixes making them larger than int.
C forbids the comma operator in enum initializing expressions, so
optionally reject comma operator.
Differential Revision: https://reviews.llvm.org/D125622Fixes#55467
Reimplement the matching logic using Visitors instead of matchers.
Benchmarks from running the check over SemaCodeComplete.cpp
Before 0.20s, After 0.04s
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D125026
Clang erroneously flagged the function as "unused", but it is most
definitely used by gtest to pretty print the parameter value when
a test fails.
Make the pretty printing function a friend function in the parameter
class similar to other clang unit tests.
Add a recursive descent parser to match macro expansion tokens against
fully formed valid expressions of integral literals. Partial
expressions will not be matched -- they can't be valid initializing
expressions for an enum.
Differential Revision: https://reviews.llvm.org/D124500Fixes#55055
Currently it rejects "// FOO_BAR_H" as an endif comment due to the extra space.
A user complained that this is too picky, which seems fair enough.
Differential Revision: https://reviews.llvm.org/D124955
Messages generated by Transformer rules may have `%` in them, which
needs to be escaped before being passed to `diag`, which interprets them
specially (and crashes if they are misused).
Differential Revision: https://reviews.llvm.org/D124952
Adds a flag to `ClangTidyContext` that is used to indicate to checks that fixes will only be applied one at a time.
This is to indicate to checks that each fix emitted should not depend on any other fixes emitted across the translation unit.
I've currently implemented the `IncludeInserter`, `LoopConvertCheck` and `PreferMemberInitializerCheck` to use these support these modes.
Reasoning behind this is in use cases like `clangd` it's only possible to apply one fix at a time.
For include inserter checks, the include is only added once for the first diagnostic that requires it, this will result in subsequent fixes not having the included needed.
A similar issue is seen in the `PreferMemberInitializerCheck` where the `:` will only be added for the first member that needs fixing.
Fixes emitted in `StandaloneDiagsMode` will likely result in malformed code if they are applied all together, conversely fixes currently emitted may result in malformed code if they are applied one at a time.
For this reason invoking `clang-tidy` from the binary will always with `StandaloneDiagsMode` disabled, However using it as a library its possible to select the mode you wish to use, `clangd` always selects `StandaloneDiagsMode`.
This is an example of the current behaviour failing
```lang=c++
struct Foo {
int A, B;
Foo(int D, int E) {
A = D;
B = E; // Fix Here
}
};
```
Incorrectly transformed to:
```lang=c++
struct Foo {
int A, B;
Foo(int D, int E), B(E) {
A = D;
// Fix Here
}
};
```
In `StandaloneDiagsMode`, it gets transformed to:
```lang=c++
struct Foo {
int A, B;
Foo(int D, int E) : B(E) {
A = D;
// Fix Here
}
};
```
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D97121
Change RewriteRule from holding an `Explanation` to being able to generate
arbitrary metadata. Where TransformerClangTidyCheck was interested in a string
description for the diagnostic, other tools may be interested in richer metadata
at a higher level of abstraction than at the edit level (which is currently
available as ASTEdit::Metadata).
Reviewed By: ymandel
Differential Revision: https://reviews.llvm.org/D120360
Change RewriteRule from holding an `Explanation` to being able to generate
arbitrary metadata. Where TransformerClangTidyCheck was interested in a string
description for the diagnostic, other tools may be interested in richer metadata
at a higher level of abstraction than at the edit level (which is currently
available as ASTEdit::Metadata).
Reviewed By: ymandel
Differential Revision: https://reviews.llvm.org/D120360
Inside a switch the caseStmt() and defaultStmt() have a nested statement
associated with them. Similarly, labelStmt() has a nested statement.
These statements were being missed when looking for a compound-if of the
form "if (x) return true; return false;" when the if is nested under one
of these labelling constructs.
Enhance the matchers to look for these nested statements using some
private matcher hasSubstatement() traversal matcher on case, default
and label statements. Add the private matcher hasSubstatementSequence()
to match the compound "if (x) return true; return false;" pattern.
- Add unit tests for private matchers and corresponding test
infrastructure
- Add corresponding test file readability-simplify-bool-expr-case.cpp.
- Fix variable name copy/paste error in readability-simplify-bool-expr.cpp.
- Drop the asserts, which were used only for debugging matchers.
- Run clang-format on the whole check.
- Move local functions out of anonymous namespace and declare state, per
LLVM style guide
- Declare labels constexpr
- Declare visitor arguments as pointer to const
- Drop braces around simple control statements per LLVM style guide
- Prefer explicit arguments over default arguments to methods
Differential Revision: https://reviews.llvm.org/D56303Fixes#27078
Currently it's hidden inside ClangTidyDiagnosticConsumer,
so it's hard to know it exists.
Given that there are multiple uses of globs in clang-tidy,
it makes sense to have these classes publicly available
for other use cases that might benefit from it.
Also, add unit test by converting the existing tests
for GlobList into typed tests.
Reviewed By: salman-javed-nz
Differential Revision: https://reviews.llvm.org/D113422
Fixes https://bugs.llvm.org/show_bug.cgi?id=48613.
llvm-header-guard is suggesting header guards with leading underscores
if the header file path begins with a '/' or similar special character.
Only reserved identifiers should begin with an underscore.
Differential Revision: https://reviews.llvm.org/D114149
Invalid SourceRanges can occur generally if the code does not compile,
thus we expect clang error diagnostics.
Unlike `clang`, `clang-tidy` did not swallow invalid source ranges, but
tried to highlight them, and blow various assertions.
The following two examples produce invalid source ranges, but this is
not a complete list:
void test(x); // error: unknown type name 'x'
struct Foo {
member; // error: C++ requires a type specifier for all declarations
};
Thanks @whisperity helping me fix this.
Reviewed-By: xazax.hun
Differential Revision: https://reviews.llvm.org/D114254
Fixes pr40372 (https://bugs.llvm.org/show_bug.cgi?id=40372).
The llvm-header-guard check does not take into account that the path
separator on Windows is `\`, not `/`.
This means that instead of suggesting a header guard in the form of:
LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_FOO_H
it incorrectly suggests:
C:\LLVM_PROJECT\CLANG_TOOLS_EXTRA\CLANG_TIDY\FOO_H
Differential Revision: https://reviews.llvm.org/D113450
As described on D111049, we're trying to remove the <string> dependency from error handling and replace uses of report_fatal_error(const std::string&) with the Twine() variant which can be forward declared.
Checks if introspection support is available set output kind parser.
If it isn't present the auto complete will not suggest `srcloc` and an error query will be reported if a user tries to access it.
Reviewed By: steveire
Differential Revision: https://reviews.llvm.org/D101365
Without the fix we get:
06:31:09 In file included from ../../clang-tools-extra/unittests/clang-tidy/ClangTidyDiagnosticConsumerTest.cpp:3:
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1392:11: error: comparison of integers of different signs: 'const int' and 'const unsigned int' [-Werror,-Wsign-compare]
06:31:09 if (lhs == rhs) {
06:31:09 ~~~ ^ ~~~
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1421:12: note: in instantiation of function template specialization 'testing::internal::CmpHelperEQ<int, unsigned int>' requested here
06:31:09 return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
06:31:09 ^
06:31:09 ../../clang-tools-extra/unittests/clang-tidy/ClangTidyDiagnosticConsumerTest.cpp:60:3: note: in instantiation of function template specialization 'testing::internal::EqHelper<false>::Compare<int, unsigned int>' requested here
06:31:09 EXPECT_EQ(4, Errors[0].Message.FileOffset);
06:31:09 ^
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1924:63: note: expanded from macro 'EXPECT_EQ'
06:31:09 EqHelper<GTEST_IS_NULL_LITERAL_(val1)>::Compare, \
06:31:09 ^
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1392:11: error: comparison of integers of different signs: 'const int' and 'const unsigned long' [-Werror,-Wsign-compare]
06:31:09 if (lhs == rhs) {
06:31:09 ~~~ ^ ~~~
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1421:12: note: in instantiation of function template specialization 'testing::internal::CmpHelperEQ<int, unsigned long>' requested here
06:31:09 return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
06:31:09 ^
06:31:09 ../../clang-tools-extra/unittests/clang-tidy/ClangTidyDiagnosticConsumerTest.cpp:64:3: note: in instantiation of function template specialization 'testing::internal::EqHelper<false>::Compare<int, unsigned long>' requested here
06:31:09 EXPECT_EQ(1, Errors[0].Message.Ranges.size());
06:31:09 ^
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1924:63: note: expanded from macro 'EXPECT_EQ'
06:31:09 EqHelper<GTEST_IS_NULL_LITERAL_(val1)>::Compare, \
06:31:09 ^
06:31:09 2 errors generated.
There was an off-by-one issue with calculating the *exact* end location
of token ranges (as given by SomeDecl->getSourceRange()) which resulted in:
xxx(something)
^~~~~~~~ // Note the missing ~ under the last character.
In addition, a test is added to keep the behaviour in check in the future.
This patch hotfixes commit 3b677b81ce.
Fixes bug http://bugs.llvm.org/show_bug.cgi?id=49000.
This patch allows Clang-Tidy checks to do
diag(X->getLocation(), "text") << Y->getSourceRange();
and get the highlight of `Y` as expected:
warning: text [blah-blah]
xxx(something)
^ ~~~~~~~~~
Reviewed-By: aaron.ballman, njames93
Differential Revision: http://reviews.llvm.org/D98635
The interface served a purpose, but since the ability to emit diagnostics when parsing configuration was added, its become mostly redundant. Emitting the diagnostic and removing the boilerplate is much cleaner.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D97614
LLVMTestingSupport is not part of libLLVM, and therefore can not
be linked to via LLVM_LINK_COMPONENTS. Instead, it needs to be
specified explicitly to ensure that it is linked explicitly
even if LLVM_LINK_LLVM_DYLIB is used. This is consistent with handling
in clangd.
Fixes PR#48931
Differential Revision: https://reviews.llvm.org/D95653
Currently errors detected when parsing the YAML for .clang-tidy files are always printed to errs.
For clang-tidy binary workflows this usually isn't an issue, but using clang-tidy as a library for integrations may want to handle displaying those errors in their own specific way.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D92920
Using a MemoryBufferRef, If there is an error parsing, we can point the user to the location of the file.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D93024
Add methods for emitting diagnostics with no location as well as a special diagnostic for configuration errors.
These show up in the errors as [clang-tidy-config].
The reason to use a custom name rather than the check name is to distinguish the error isn't the same category as the check that reported it.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D91885
A number of declarations were leftover after the move from `clang::tooling` to
`clang::transformer`. This patch removes those declarations and upgrades the
handful of references to the deprecated declarations.
Differential Revision: https://reviews.llvm.org/D92340
Currently, `node` only includes the semicolon for (some) statements. However,
declarations have the same issue of (potentially) trailing semicolons, so `node`
should behave the same for them.
Differential Revision: https://reviews.llvm.org/D91872
Changed `ClangTidyOptions::mergeWith` to operate on the instance instead of returning a copy. The old mergeWith method has been renamed to merge and marked as nodiscard, to aid in disambiguating which one is which.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D91184
The config providers that look for configuration files currently take a pointer to a FileSystem in the constructor.
For some reason this isn't actually used when trying to read those configuration files, Essentially it just follows the behaviour of the real filesystem.
Using clang-tidy standalone this doesn't cause any issue.
But if its used as a library and the user wishes to use say an `InMemoryFileSystem` it will try to read the files from the disc instead.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D90992
Currently, this would not correctly associate a category with the related include if it was top-level (i.e. no slashes in the path). This ensures that we explicitly think about that case.
Reviewed By: gribozavr2
Differential Revision: https://reviews.llvm.org/D89608
Update IncludeSorter/IncludeInserter to support objective-c google style (part 1):
1) Correctly consider .mm/.m extensions
2) Correctly categorize category headers.
3) Add support for generated files to go in a separate section of imports
Reviewed By: alexfh, gribozavr2
Patch by Joe Turner.
Differential Revision: https://reviews.llvm.org/D89276
Both tests define clang::tidy::test::TestCheck::registerMatchers().
This is UB and causes linker to sometimes choose the wrong overload.
Put classes into anonymous namespaces to avoid the problem.
Differential Revision: https://reviews.llvm.org/D84902
This cleans up several CMakeLists.txt's where -Wno-suggest-override was manually specified. These test targets now inherit this flag from the gtest target.
Some unittests CMakeLists.txt's, in particular Flang and LLDB, are not touched by this patch. Flang manually adds the gtest sources itself in some configurations, rather than linking to LLVM's gtest target, so this fix would be insufficient to cover those cases. Similarly, LLDB has subdirectories that manually add the gtest headers to their include path without linking to the gtest target, so those subdirectories still need -Wno-suggest-override to be manually specified to compile without warnings.
Differential Revision: https://reviews.llvm.org/D84554
Simplified how `IncludeInserter` is used in Checks by abstracting away the SourceManager and PPCallbacks inside the method `registerPreprocessor`.
Changed checks that use `IncludeInserter` to no longer use a `std::unique_ptr`, instead the IncludeInserter is just a member of the class thats initialized with an `IncludeStyle`.
Saving an unnecessary allocation.
This results in the removal of the field `IncludeSorter::IncludeStyle` from the checks, as its wrapped in the `IncludeInserter`.
No longer need to create an instance of the `IncludeInserter` in the registerPPCallbacks, now that method only needs to contain:
```
Inserter.registerPreprocessor(PP);
```
Also added a helper method to `IncludeInserter` called `createMainFileInclusionInsertion`, purely sugar but does better express intentions.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D83680
add_compile_options is more sensitive to its location in the file than add_definitions--it only takes effect for sources that are added after it. This updated patch ensures that the add_compile_options is done before adding any source files that depend on it.
Using add_definitions caused the flag to be passed to rc.exe on Windows and thus broke Windows builds.
Mikael Holmen