Commit Graph

28 Commits

Author SHA1 Message Date
Reka Kovacs
ed8c05cc99 [analyzer] Make checkEndFunction() give access to the return statement.
Differential Revision: https://reviews.llvm.org/D49387

llvm-svn: 337215
2018-07-16 20:47:45 +00:00
Adrian Prantl
9fc8faf9e6 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
2018-05-09 01:00:01 +00:00
Artem Dergachev
13b2026ba4 [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
2018-01-17 23:46:13 +00:00
Anna Zaks
b570195c3a [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
2017-01-13 00:50:57 +00:00
Devin Coughlin
e434fc479b [analyzer] Add check::BeginFunction to CheckerDocumentation checks. NFC.
This was an oversight from when I added BeginFunction support in r261293.

llvm-svn: 276950
2016-07-28 00:52:10 +00:00
Devin Coughlin
8d922aa746 [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
2016-02-19 01:35:10 +00:00
Eugene Zelenko
0a4f3f4373 Fix some Clang-tidy readability-redundant-control-flow warnings; other minor fixes.
Differential revision: http://reviews.llvm.org/D17060

llvm-svn: 260414
2016-02-10 19:11:58 +00:00
Devin Coughlin
ca5ab2b0d4 [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
2015-09-15 01:13:53 +00:00
Ted Kremenek
3a0678e33c [analyzer] Apply whitespace cleanups by Honggyu Kim.
llvm-svn: 246978
2015-09-08 03:50:52 +00:00
Duncan Sands
f3dcb68d76 Fix comment type pointed out by Kim Gräsman.
llvm-svn: 182702
2013-05-25 02:22:10 +00:00
Duncan Sands
7d1e660b03 Fix comment typo pointed out by maslen on IRC.
llvm-svn: 182642
2013-05-24 13:41:43 +00:00
Anna Zaks
4b04e66c4f [analyzer] Document existence of ConstPointerEscape.
llvm-svn: 178311
2013-03-28 23:15:32 +00:00
Anna Zaks
acdc13cb00 [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
2013-02-07 23:05:43 +00:00
Anna Zaks
3fdcc0bda3 [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
2013-01-03 00:25:29 +00:00
Anna Zaks
9747febba9 [analyzer] Address Jordan's nitpicks as per code review of r170625.
llvm-svn: 170832
2012-12-21 01:50:14 +00:00
Anna Zaks
dc15415da4 [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
2012-12-20 00:38:25 +00:00
Chandler Carruth
3a02247dc9 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
2012-12-04 09:13:33 +00:00
Jordan Rose
f684db65f8 [analyzer] Enhance docs for checker callbacks (esp. processRegionChanges).
No functionality change; this checker is only used for documentation.

llvm-svn: 167522
2012-11-07 02:35:02 +00:00
Jordan Rose
4080b0cceb [analyzer] CheckerDocumentation: Change examples for PreStmt and PostStmt.
llvm-svn: 167339
2012-11-02 23:49:33 +00:00
Jordan Rose
627b046c88 [analyzer] Combine all ObjC message CallEvents into ObjCMethodCall.
As pointed out by Anna, we only differentiate between explicit message sends

This also adds support for ObjCSubscriptExprs, which are basically the same
as properties in many ways. We were already checking these, but not emitting
nice messages for them.

This depends on the llvm::PointerIntPair change in r160456.

llvm-svn: 160461
2012-07-18 21:59:51 +00:00
Jordan Rose
afe7c2c2bf [analyzer] Add generic preCall and postCall checks.
llvm-svn: 159562
2012-07-02 19:28:16 +00:00
Jordan Rose
547060b30b [analyzer] Finish replacing ObjCMessage with ObjCMethodDecl and friends.
The preObjCMessage and postObjCMessage callbacks now take an ObjCMethodCall
argument, which can represent an explicit message send (ObjCMessageSend) or an
implicit message generated by a property access (ObjCPropertyAccess).

llvm-svn: 159559
2012-07-02 19:28:04 +00:00
Jordan Rose
742920c8e7 [analyzer] Add a new abstraction over all types of calls: CallEvent
This is intended to replace CallOrObjCMessage, and is eventually intended to be
used for anything that cares more about /what/ is being called than /how/ it's
being called. For example, inlining destructors should be the same as inlining
blocks, and checking __attribute__((nonnull)) should apply to the allocator
calls generated by operator new.

llvm-svn: 159554
2012-07-02 19:27:35 +00:00
James Dennett
845619a285 Documentation cleanup:
* Add \brief to produce a summary in the Doxygen output;
* Add missing parameter names to \param commands;
* Fix mismatched parameter names for \param commands;
* Add a parameter name so that the \param has a target.

llvm-svn: 158503
2012-06-15 07:41:35 +00:00
Anton Yartsev
edb062887f corrected check::EndOfTranslationUnit checker name and added 'const' to declaration
llvm-svn: 153302
2012-03-23 02:43:24 +00:00
Anna Zaks
3d34834bb0 [analyzer] Make Malloc Checker optimistic in presence of inlining.
(In response of Ted's review of r150112.)

This moves the logic which checked if a symbol escapes through a
parameter to invalidateRegionCallback (instead of post CallExpr visit.)

To accommodate the change, added a CallOrObjCMessage parameter to
checkRegionChanges callback.

llvm-svn: 150513
2012-02-14 21:55:24 +00:00
Ted Kremenek
49b1e38e4b Change references to 'const ProgramState *' to typedef 'ProgramStateRef'.
At this point this is largely cosmetic, but it opens the door to replace
ProgramStateRef with a smart pointer that more eagerly acts in the role
of reclaiming unused ProgramState objects.

llvm-svn: 149081
2012-01-26 21:29:00 +00:00
Anna Zaks
92297f9dcc [analyzer] Add checker callback documentation.
llvm-svn: 145495
2011-11-30 17:12:52 +00:00