I used a C++ code block in check documentation to show example
output from clang-tidy, but since the example output isn't
kosher C++, sphinx didn't like that when it went to syntax
highlight the block. So switch to a literal block instead
and forego any highlighting.
Fixes build error
<https://lab.llvm.org/buildbot/#/builders/115/builds/21145>
Previously, any macro that didn't look like a varargs macro
or a function style macro was reported with a warning that
it should be replaced with a constexpr const declaration.
This is only reasonable when the macro body contains constants
and not expansions like ",", "[[noreturn]]", "__declspec(xxx)",
etc.
So instead of always issuing a warning about every macro that
doesn't look like a varargs or function style macro, examine the
tokens in the macro and only warn about the macro if it contains
only comment and constant tokens.
Differential Revision: https://reviews.llvm.org/D116386Fixes#39945
It will make the output more versbose, but I found that these are useful
information when debugging selection tree.
Differential Revision: https://reviews.llvm.org/D117475
E.g. `Concept auto Func();`
The nameLoc for the constained auto type loc pointed to the concept name
loc, it should be the auto token loc. This patch fixes it, and remove
a relevant hack in clang-tidy check.
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D117009
Targets are not necessarily inserted in the order they appear in source
code. For example we could traverse overload sets, or selectively insert
template patterns after all other decls.
So order the targets before printing to make sure tests are not dependent on
such implementation details. We can also do it in production, but that might be
wasteful as we haven't seen any complaints in the wild around these orderings
yet.
Differential Revision: https://reviews.llvm.org/D117549
Fixes PR#52245. I've also added a few test cases beyond PR#52245 that would also fail with the current implementation, which is quite brittle in many respects (e.g. it uses the `hasDescendant()` matcher to find the container that is being accessed, which is very easy to trick, as in the example in PR#52245).
I have not been able to reproduce the second issue mentioned in PR#52245 (namely that using the `data()` member function is suggested even for containers that don't have it), but I've added a test case for it to be sure.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D113863
LLVM Programmer’s Manual strongly discourages the use of `std::vector<bool>` and suggests `llvm::BitVector` as a possible replacement.
This patch does just that for clangd and clang-tidy.
Reviewed By: dexonsmith
Differential Revision: https://reviews.llvm.org/D117119
The recommendation on Windows is to checkout from git with
core.autolf=false in order to preserve LF line endings on
test files. However, when creating a new check this results
in modified files as having switched all the line endings on
Windows. Write all files with explicit LF line endings to
prevent this.
Fixes#52968
Differential Revision: https://reviews.llvm.org/D117535
The `{HeaderSearch,Preprocessor}::LookupFile()` functions take an out-parameter `const DirectoryLookup *&`. Most callers end up creating a `const DirectoryLookup *` variable that's otherwise unused.
This patch changes the out-parameter from reference to a pointer, making it possible to simply pass `nullptr` to the function without the ceremony.
Reviewed By: ahoppen
Differential Revision: https://reviews.llvm.org/D117312
This is a follow-up on D116643. `isInSystemHeader` check already detects
symbols coming from the Standard Library, so searching for the qualified name
in StdSymbolMap.inc is no longer necessary.
The tests filtering out purely based on the symbol qualified names are removed.
Reviewed By: hokein
Differential Revision: https://reviews.llvm.org/D117491
clang-tidy currently reports false positives even for simple cases such as:
```
struct S {
using X = S;
X &operator=(const X&) { return *this; }
};
```
This is due to the fact that the `misc-unconventional-assign-operator` check fails to look at the //canonical// types. This patch fixes this behavior.
Reviewed By: aaron.ballman, mizvekov
Differential Revision: https://reviews.llvm.org/D114197
Fixes [[ https://bugs.llvm.org/show_bug.cgi?id=48086 | PR#48086 ]]. The problem is that the current matcher uses `hasParent()` to detect friend declarations, but for a template friend declaration, the immediate parent of the `FunctionDecl` is a `FunctionTemplateDecl`, not the `FriendDecl`. Therefore, I have replaced the matcher with `hasAncestor()`.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D114299
Adds a option `use-dirty-preambles` to enable using unsaved in editor contents when building pre-ambles.
This enables a more seamless user experience when switching between header and implementation files and forgetting to save inbetween.
It's also in line with the LSP spec that states open files in the editor should be used instead of on the contents on disk - https://microsoft.github.io/language-server-protocol/overviews/lsp/overview/
For now the option is defaulted to off and hidden, Though I have a feeling it should be moved into the `.clangd` config and possibly defaulted to true.
Addresses https://github.com/clangd/clangd/issues/488
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D95046
The patch was reverted because it caused a crash during PCH build -- we
missed to update the RParenLoc in TreeTransform<Derived>::TransformAutoType.
This relands 55d96ac and 37ec65e with a test and fix.
This is a workaround (adding a newline to the eof) in clangd to avoid the code
completion crash, see https://github.com/clangd/clangd/issues/332.
In principle, this is a clang bug, we should fix it in clang, but it is not
trivial.
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D117456
The newline-eof fix was rendered as "insert '...'", this patch
special-case it.
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D117294
This is the original patch in my GNUInstallDirs series, now last to merge as the final piece!
It arose as a new draft of D28234. I initially did the unorthodox thing of pushing to that when I wasn't the original author, but since I ended up
- Using `GNUInstallDirs`, rather than mimicking it, as the original author was hesitant to do but others requested.
- Converting all the packages, not just LLVM, effecting many more projects than LLVM itself.
I figured it was time to make a new revision.
I have used this patch series (and many back-ports) as the basis of https://github.com/NixOS/nixpkgs/pull/111487 for my distro (NixOS), which was merged last spring (2021). It looked like people were generally on board in D28234, but I make note of this here in case extra motivation is useful.
---
As pointed out in the original issue, a central tension is that LLVM already has some partial support for these sorts of things. Variables like `COMPILER_RT_INSTALL_PATH` have already been dealt with. Variables like `LLVM_LIBDIR_SUFFIX` however, will require further work, so that we may use `CMAKE_INSTALL_LIBDIR`.
These remaining items will be addressed in further patches. What is here is now rote and so we should get it out of the way before dealing more intricately with the remainder.
Reviewed By: #libunwind, #libc, #libc_abi, compnerd
Differential Revision: https://reviews.llvm.org/D99484
This is the original patch in my GNUInstallDirs series, now last to merge as the final piece!
It arose as a new draft of D28234. I initially did the unorthodox thing of pushing to that when I wasn't the original author, but since I ended up
- Using `GNUInstallDirs`, rather than mimicking it, as the original author was hesitant to do but others requested.
- Converting all the packages, not just LLVM, effecting many more projects than LLVM itself.
I figured it was time to make a new revision.
I have used this patch series (and many back-ports) as the basis of https://github.com/NixOS/nixpkgs/pull/111487 for my distro (NixOS), which was merged last spring (2021). It looked like people were generally on board in D28234, but I make note of this here in case extra motivation is useful.
---
As pointed out in the original issue, a central tension is that LLVM already has some partial support for these sorts of things. Variables like `COMPILER_RT_INSTALL_PATH` have already been dealt with. Variables like `LLVM_LIBDIR_SUFFIX` however, will require further work, so that we may use `CMAKE_INSTALL_LIBDIR`.
These remaining items will be addressed in further patches. What is here is now rote and so we should get it out of the way before dealing more intricately with the remainder.
Reviewed By: #libunwind, #libc, #libc_abi, compnerd
Differential Revision: https://reviews.llvm.org/D99484
During pop() we convert nodes into spans of expanded syntax::Tokens.
If we precompute a range of plausible (expanded) tokens, then we can do an
extremely cheap approximate hit-test against it, because syntax::Tokens are
ordered by pointer.
This would seem not to buy anything (we don't enter nodes unless they overlap
the selection), but in fact the spans we have are for *newly* claimed ranges
(i.e. those unclaimed by any child node).
So if you have:
{ { [[2+2]]; } }
then all of the CompoundStmts pass the hit test and are pushed, but we skip
full hit-testing of the brackets during pop() as they lie outside the range.
This is ~10x average speedup for selectiontree on a bad case I've seen
(large gtest file).
Differential Revision: https://reviews.llvm.org/D117107
Not sure it's OK to suppress this in clang itself - if we're building a PCH
or module, maybe it matters?
Differential Revision: https://reviews.llvm.org/D116925
The AST doesn't track their locations, and the default behavior of attributing
them to the lexically-enclosing node is sloppy and often inaccurate.
Also add a couple of passing test cases for declarators that weren't obvious.
Differential Revision: https://reviews.llvm.org/D117185
When searching for AST nodes that may overlap the selection, mayHit() was only
attempting to prune nodes whose begin/end are both in the main file.
While failing to prune never gives wrong results, it hurts performance.
In GTest unit-tests, `TEST()` macros at the top level declare classes.
These were never pruned and we traversed *every* such class for any selection.
We fix this by reasoning about what tokens such a node might claim.
They must lie within its ultimate macro expansion range, so if this doesn't
overlap with the selection, we can prune the node.
Differential Revision: https://reviews.llvm.org/D116978
New values:
- Split Dynamic into Open/Preamble
- Add Background (previously was just Unknown)
- Soon: stdlib index
This requires extending to 16 bits, which fits within the padding of Symbol.
Unfortunately we're also *serializing* SymbolOrigin as a fixed 8 bits.
Stop serializing SymbolOrigin:
- conceptually, the source is whoever indexes or *deserializes* a symbol
- deserialization takes SymbolOrigin as a parameter and stamps it on each sym
- this is a breaking format change
Differential Revision: https://reviews.llvm.org/D115243
C++ member function bodies (including ctor initializers) are first captured
into a buffer and then parsed after the class is complete. (This allows
members to be referenced even if declared later).
When the boundary of the function body cannot be established, its buffer is
discarded and late-parsing never happens (it would surely fail).
For code completion this is the wrong tradeoff: the point of the parse is to
generate completions as a side-effect.
Today, when the ctor body wasn't typed yet there are no init list completions.
With this patch we parse such an init-list if it contains the completion point.
There's one caveat: the parser has to decide where to resume parsing members
after a broken init list. Often the first clear recovery point is *after* the
next member, so that member is missing from completion/signature help etc. e.g.
struct S {
S() m //<- completion here
int maaa;
int mbbb;
}
Here "int maaa;" is treated as part of the init list, so "maaa" is not available
as a completion. Maybe in future indentation can be used to recognize that
this is a separate member, not part of the init list.
Differential Revision: https://reviews.llvm.org/D116294
Updates the check and tests to not diagnose the null case for string_view (but retains it for string). This prevents the check from giving duplicate warnings that are caught by bugprone-stringview-nullptr ([[ https://reviews.llvm.org/D113148 | D113148 ]]).
Reviewed By: ymandel
Differential Revision: https://reviews.llvm.org/D114823
bugprone-stringview-nullptr was not initially written with tests for return statements. After landing the check, the thought crossed my mind to add such tests. After writing them, I realized they needed additional handling in the matchers.
Differential Revision: https://reviews.llvm.org/D115121
Sometimes a macro invocation will look like an argument list
declaration. Improve the check to detect this situation and not
try to modify the macro invocation.
Thanks to Nathan James for the fix.
- Ignore implicit typedefs (e.g. compiler builtins)
- Improve lexing state machine to locate void argument tokens
- Add additional return_t() macro tests
- clang-format control in the test case file
- remove braces around single statements per LLVM style guide
Fixes#43791
Differential Revision: https://reviews.llvm.org/D116425
std::remove from algorithm is a lot more common than the overload from
the cstdio (which deletes files). This patch introduces a set of symbols
for which we should prefer the overloaded versions.
Differential Revision: https://reviews.llvm.org/D114724
Often we run into situations where we want to ignore
warnings from system headers, but Clang will still
give warnings about the contents of a macro defined
in a system header used in user-code.
Introduce a ShowInSystemMacro option to be able to
specify which warnings we do want to keep raising
warnings for. The current behavior is kept in this patch
(i.e. warnings from system macros are enabled by default).
The decision as to whether this should be an opt-in or opt-out
feature can be made in a separate patch.
To put the feature to test, replace duplicated code for
Wshadow and Wold-style-cast with the SuppressInSystemMacro tag.
Also disable the warning for C++20 designators, fixing #52944.
Differential Revision: https://reviews.llvm.org/D116833
The cppcoreguidelines-pro-bounds-array-to-pointer-decay check currently
accepts:
const char *b = i ? "foo" : "foobar";
but not
const char *a = i ? "foo" : "bar";
This is because the AST is slightly different in the latter case (see
https://godbolt.org/z/MkHVvs).
This eliminates the inconsistency by making it accept the latter form
as well.
Fixes https://github.com/llvm/llvm-project/issues/31155.
"driver <flags> -- <input>" is a particularly convenient form of the
compile command to manipulate, with fewer special cases to handle.
Guaranteeing that the output command is of that form is cheap and makes
it easier to consume the result in some cases.
Differential Revision: https://reviews.llvm.org/D116721
Break up the huge function by extracting a class, storing intermediate
state as class members and breaking up the big function into a group
of class methods all at the same level of abstraction.
Differential Revision: https://reviews.llvm.org/D56343
Richard