[analyzer][NFC] Document check::ASTCodeBody checker callback (#84160)

Fixes #73764

With this patch, now all the callbacks are demonstrated here.

[analyzer][NFC] Make CheckerDocumentation checker in-sync with actual checker callbacks (#83973)

In PR #83677 I was surprised to see that outdated checker callback
signatures are a problem. It turn

[analyzer][NFC] Make CheckerDocumentation checker in-sync with actual checker callbacks (#83973)

In PR #83677 I was surprised to see that outdated checker callback
signatures are a problem. It turns out, we need the `registerChecker...`
function to invoke the `Mgr.registerChecker<>()` which would instantiate
the `_register` calls, that would take the address of the defined
checker callbacks. Consequently, if the expected signatures mismatch, it
won't compile from now on, so we have static guarantee that this issue
never pops up again.

Given we need the `register` call, at this point we could just hook this
checker into the `debug` package and make it never registered. It
shouldn't hurt anyone :)

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[clang][StaticAnalyzer] fix function evalCall() typo in CheckerDocumentation (#83677)

```bool evalCall(const CallEvent &Call, CheckerContext &C)``` is corret form.

Co-authored-by: miaozhiyuan <mi

[clang][StaticAnalyzer] fix function evalCall() typo in CheckerDocumentation (#83677)

```bool evalCall(const CallEvent &Call, CheckerContext &C)``` is corret form.

Co-authored-by: miaozhiyuan <miaozhiyuan@feysh.com>

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[analyzer] Fix a typo in docs

llvm-svn: 352468

Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the ne

Update the file headers across all of the LLVM projects in the monorepo
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

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[analyzer][NFC] Move CheckerRegistry from the Core directory to Frontend

ClangCheckerRegistry is a very non-obvious, poorly documented, weird concept.
It derives from CheckerRegistry, and is placed

[analyzer][NFC] Move CheckerRegistry from the Core directory to Frontend

ClangCheckerRegistry is a very non-obvious, poorly documented, weird concept.
It derives from CheckerRegistry, and is placed in lib/StaticAnalyzer/Frontend,
whereas it's base is located in lib/StaticAnalyzer/Core. It was, from what I can
imagine, used to circumvent the problem that the registry functions of the
checkers are located in the clangStaticAnalyzerCheckers library, but that
library depends on clangStaticAnalyzerCore. However, clangStaticAnalyzerFrontend
depends on both of those libraries.

One can make the observation however, that CheckerRegistry has no place in Core,
it isn't used there at all! The only place where it is used is Frontend, which
is where it ultimately belongs.

This move implies that since
include/clang/StaticAnalyzer/Checkers/ClangCheckers.h only contained a single function:

class CheckerRegistry;

void registerBuiltinCheckers(CheckerRegistry &registry);

it had to re purposed, as CheckerRegistry is no longer available to
clangStaticAnalyzerCheckers. It was renamed to BuiltinCheckerRegistration.h,
which actually describes it a lot better -- it does not contain the registration
functions for checkers, but only those generated by the tblgen files.

Differential Revision: https://reviews.llvm.org/D54436

llvm-svn: 349275

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Misc typos fixes in ./lib folder

Summary: Found via `codespell -q 3 -I ../clang-whitelist.txt -L uint,importd,crasher,gonna,cant,ue,ons,orign,ned`

Reviewers: teemperor

Reviewed By: teemperor

Subs

Misc typos fixes in ./lib folder

Summary: Found via `codespell -q 3 -I ../clang-whitelist.txt -L uint,importd,crasher,gonna,cant,ue,ons,orign,ned`

Reviewers: teemperor

Reviewed By: teemperor

Subscribers: teemperor, jholewinski, jvesely, nhaehnle, whisperity, jfb, cfe-commits

Differential Revision: https://reviews.llvm.org/D55475

llvm-svn: 348755

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[analyzer] Make checkEndFunction() give access to the return statement.

Differential Revision: https://reviews.llvm.org/D49387

llvm-svn: 337215

Remove \brief commands from doxygen comments.

This is similar to the LLVM change https://reviews.llvm.org/D46290.

We've been running doxygen with the autobrief option for a couple of
years now. Thi

Remove \brief commands from doxygen comments.

This is similar to the LLVM change https://reviews.llvm.org/D46290.

We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

for i in $(git grep -l '\@brief'); do perl -pi -e 's/\@brief //g' $i & done
for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46320

llvm-svn: 331834

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[analyzer] operator new: Add a new checker callback, check::NewAllocator.

The callback runs after operator new() and before the construction and allows
the checker to access the casted return value

[analyzer] operator new: Add a new checker callback, check::NewAllocator.

The callback runs after operator new() and before the construction and allows
the checker to access the casted return value of operator new() (in the
sense of r322780) which is not available in the PostCall callback for the
allocator call.

Update MallocChecker to use the new callback instead of PostStmt<CXXNewExpr>,
which gets called after the constructor.

Differential Revision: https://reviews.llvm.org/D41406
rdar://problem/12180598

llvm-svn: 322787

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[analyzer] Add LocationContext as a parameter to checkRegionChanges

This patch adds LocationContext to checkRegionChanges and removes
wantsRegionChangeUpdate as it was unused.

A patch by Krzysztof

[analyzer] Add LocationContext as a parameter to checkRegionChanges

This patch adds LocationContext to checkRegionChanges and removes
wantsRegionChangeUpdate as it was unused.

A patch by Krzysztof Wiśniewski!

Differential Revision: https://reviews.llvm.org/D27090

llvm-svn: 291869

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[analyzer] Add check::BeginFunction to CheckerDocumentation checks. NFC.

This was an oversight from when I added BeginFunction support in r261293.

llvm-svn: 276950

[analyzer] Add checker callback for beginning of function.

Add a checker callback that is called when the analyzer starts analyzing a
function either at the top level or when inlined. This will be u

[analyzer] Add checker callback for beginning of function.

Add a checker callback that is called when the analyzer starts analyzing a
function either at the top level or when inlined. This will be used by a
follow-on patch making the DeallocChecker path sensitive.

Differential Revision: http://reviews.llvm.org/D17418

llvm-svn: 261293

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Fix some Clang-tidy readability-redundant-control-flow warnings; other minor fixes.

Differential revision: http://reviews.llvm.org/D17060

llvm-svn: 260414

[analyzer] Skip Pre/Post handlers for ObjC calls when receiver is nil.

In Objective-C, method calls with nil receivers are essentially no-ops. They
do not fault (although the returned value may be g

[analyzer] Skip Pre/Post handlers for ObjC calls when receiver is nil.

In Objective-C, method calls with nil receivers are essentially no-ops. They
do not fault (although the returned value may be garbage depending on the
declared return type and architecture). Programmers are aware of this
behavior and will complain about a false alarm when the analyzer
diagnoses API violations for method calls when the receiver is known to
be nil.

Rather than require each individual checker to be aware of this behavior
and suppress a warning when the receiver is nil, this commit
changes ExprEngineObjC so that VisitObjCMessage skips calling checker
pre/post handlers when the receiver is definitely nil. Instead, it adds a
new event, ObjCMessageNil, that is only called in that case.

The CallAndMessageChecker explicitly cares about this case, so I've changed it
to add a callback for ObjCMessageNil and moved the logic in PreObjCMessage
that handles nil receivers to the new callback.

rdar://problem/18092611

Differential Revision: http://reviews.llvm.org/D12123

llvm-svn: 247653

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[analyzer] Apply whitespace cleanups by Honggyu Kim.

llvm-svn: 246978

Fix comment type pointed out by Kim Gräsman.

llvm-svn: 182702

Fix comment typo pointed out by maslen on IRC.

llvm-svn: 182642

[analyzer] Document existence of ConstPointerEscape.

llvm-svn: 178311

[analyzer] Add pointer escape type param to checkPointerEscape callback

The checkPointerEscape callback previously did not specify how a
pointer escaped. This change includes an enum which describes

[analyzer] Add pointer escape type param to checkPointerEscape callback

The checkPointerEscape callback previously did not specify how a
pointer escaped. This change includes an enum which describes the
different ways a pointer may escape. This enum is passed to the
checkPointerEscape callback when a pointer escapes. If the escape
is due to a function call, the call is passed. This changes
previous behavior where the call is passed as NULL if the escape
was due to indirectly invalidating the region the pointer referenced.

A patch by Branden Archer!

llvm-svn: 174677

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[analyzer] Rename callback EndPath -> EndFunction

This better reflects when callback is called and what the checkers
are relying on. (Both names meant the same pre-IPA.)

llvm-svn: 171432

[analyzer] Address Jordan's nitpicks as per code review of r170625.

llvm-svn: 170832

[analyzer] Add the pointer escaped callback.

Instead of using several callbacks to identify the pointer escape event,
checkers now can register for the checkPointerEscape.

Converted the Malloc chec

[analyzer] Add the pointer escaped callback.

Instead of using several callbacks to identify the pointer escape event,
checkers now can register for the checkPointerEscape.

Converted the Malloc checker to use the new callback.
SimpleStreamChecker will be converted next.

llvm-svn: 170625

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Sort all of Clang's files under 'lib', and fix up the broken headers
uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/util

Sort all of Clang's files under 'lib', and fix up the broken headers
uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/utils/sort_includes.py
script over the files.

I also manually added quite a few missing headers that were uncovered by
shuffling the order or moving headers up to be main-module-headers.

llvm-svn: 169237

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[analyzer] Enhance docs for checker callbacks (esp. processRegionChanges).

No functionality change; this checker is only used for documentation.

llvm-svn: 167522