ASTMatchers currently have problems mixing bound TypeLoc nodes with Decl/Stmt
nodes. That should be fixed soon but for this checker there we only need the
TypeLoc to generate a fixit so postpone the potentially heavyweight AST walking
until after we know that we're going to emit a warning.
This is covered by existing test cases.
Original message:
[clang-tidy] Add a check for RAII temporaries.
This tries to find code similar that immediately destroys
an object that looks like it's trying to follow RAII.
{
scoped_lock(&global_mutex);
critical_section();
}
This checker will have false positives if someone uses this pattern
to legitimately invoke a destructor immediately (or the statement is
at the end of a scope anyway). To reduce the number we ignore this
pattern in macros (this is heavily used by gtest) and ignore objects
with no user-defined destructor.
llvm-svn: 213738
Summary:
This tries to find code similar that immediately destroys
an object that looks like it's trying to follow RAII.
{
scoped_lock(&global_mutex);
critical_section();
}
This checker will have false positives if someone uses this pattern
to legitimately invoke a destructor immediately (or the statement is
at the end of a scope anyway). To reduce the number we ignore this
pattern in macros (this is heavily used by gtest) and ignore objects
with no user-defined destructor.
Reviewers: alexfh, djasper
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D4615
llvm-svn: 213647
This required a rather ugly workaround for a problem in ASTMatchers where
callee() is only overloaded for Stmt and Decl but not for Expr.
llvm-svn: 213509
This reverts commit r213308.
Reverting to have some on-list discussion/confirmation about the ongoing
direction of smart pointer usage in the LLVM project.
llvm-svn: 213324
If there's memset(x, y, 0) in the code it's most likely a mistake. The
checker suggests a fix-it to swap 'y' and '0'.
I think this has the potential to be promoted into a general clang warning
after some testing in clang-tidy.
Differential Revision: http://reviews.llvm.org/D4535
llvm-svn: 213155
This change contains of two checkers that warn about
1. anonymous namespaces in header files.
2. 'using namespace' directives everywhere.
Differential Revision: http://reviews.llvm.org/D4523
llvm-svn: 213153
Summary:
Those are considered unsafe and should be replaced with simple pointers or
full copies. It recognizes both std::string and ::string.
Reviewers: alexfh, djasper
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D4522
llvm-svn: 213133
Imagine, hypothetically, that you had a build of clang-tidy that enabled
the google-* checks by default. If you had such a binary, then this
test would fail. Making it pass in that configuration isn't such a bad
thing.
llvm-svn: 213085
Summary:
We still allow the escape hatch foo(int /*x*/) and also suggest this
in a fixit. This is more powerful than the corresponding cpplint.py check
it also flags functions with multiple arguments as naming all arguments is
recommended by the google style guide.
Reviewers: alexfh, djasper
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D4518
llvm-svn: 213075
Those may be incompatible with C++11 and are unnecessary. We suggest
removing the template arguments when they match the types of the make_pair
arguments or replace it with std::pair and explicit template arguments when
not.
Differential Revision: http://reviews.llvm.org/D4497
llvm-svn: 213058
This looks for swapped arguments by looking at implicit conversions of arguments
void Foo(int, double);
Foo(1.0, 3); // Most likely a bug
llvm-svn: 212942
Summary:
This patch implements a subset of possible replacements of C-style
casts with const_cast/static_cast/reinterpret_cast. This should cover a large
portion of cases in real code. Handling of a few more cases may be implemented
eventually.
Reviewers: sbenza, djasper
Reviewed By: djasper
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D4478
llvm-svn: 212924
The goal is to find code like the example below, which is likely a typo
where someone meant to write "if (*b)".
bool *b = SomeFunction();
if (b) {
// b never dereferenced
}
This checker naturally has a relatively high false positive rate so it
applies some heuristics to avoid cases where the pointer is checked for
nullptr before being written.
Differential Revision: http://reviews.llvm.org/D4458
llvm-svn: 212797
- Remove unused includes.
- Minor wording fix.
- Added support to check for clang-tidy messages to check_clang_tidy_fix.sh
= Updated test case.
llvm-svn: 212540
Those often cause use after free bugs and should be generally avoided.
Technically it is safe to have a Twine with >=2 components in a variable
but I don't think it is a good pattern to follow. The almost trivial checker
comes with elaborated fix-it hints that turn the Twine into a std::string
if necessary and otherwise fall back to the original type if the Twine
is created from a single value.
llvm-svn: 212535
Summary:
This patch removes " [check-name]" from the end of
ClangTidyMessage::Message. The " [check-name]" part is only appended when
printing diagnostics on the console. Clang errors are now marked with
"clang-diagnostic-error" check name, remarks and unknown warnings are marked
with "clang-diagnostic-unknown".
Reviewers: djasper
Reviewed By: djasper
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D4356
llvm-svn: 212180
Summary:
The first version failed the SubstNonTypeTempateParmExpr-related test
on some buildbots. This one uses the new substNonTypeTempateParmExpr matcher to
filter out implicit C-style casts.
This patch depends on D4327.
Reviewers: djasper
Reviewed By: djasper
Subscribers: aemerson, cfe-commits
Differential Revision: http://reviews.llvm.org/D4328
llvm-svn: 212002
These operator overloads were unneeded (once the const correctness in
PooledStringPtr was corrected) and inefficient (since the strings are
pooled the pointers can just be compared for equality instead of doing
strcmp).
llvm-svn: 211245
Summary:
This patch makes it possible for clang-tidy clients to provide
different options for different translation units. The option, which doesn't
make sense to be file-dependent, was moved to a separate ClangTidyGlobalOptions
struct. Added parsing of ClangTidyOptions.
Reviewers: klimek
Reviewed By: klimek
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D3979
llvm-svn: 210260
Summary:
No filters should affect the display of errors. Fixed a few tests,
which had compile errors.
We need to think what we should do with mapped errors (-Werror).
Reviewers: klimek
Reviewed By: klimek
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D3982
llvm-svn: 210044
Summary:
This seems like a more appropriate reaction to the user specifying a
single check with a wrong name, for example.
Reviewers: klimek
Reviewed By: klimek
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D3981
llvm-svn: 210043
This breaks with MSVC.
With IsLateTemplateParsed, FunctionDecl::doesThisDeclarationHaveABody() returns true regardless of Body.
This reinstates what was fixed in r208985.
llvm-svn: 209896
On win32, %s is expanded to X:\path\to\test\line-filter.cpp. It was incompatible to yaml.
Although "%/s" could be available in Lit, ClangTidyDiagnosticConsumer::passesLineFilter() is unaware of comparision between '/' and '\\'.
llvm-svn: 209569
Summary:
This is going to be used for a clang-tidy-diff script to display
warnings in changed lines only. The option uses JSON, as its value is not
intended to be entered manually.
Reviewers: klimek
Reviewed By: klimek
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D3873
llvm-svn: 209450
Summary:
Handle various forms of existing namespace closing comments, fix
existing comments with wrong namespace name, ignore short namespaces.
The state of this check now seems to be enough to enable it by default to gather
user feedback ;)
Reviewers: klimek
Reviewed By: klimek
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D3825
llvm-svn: 209141