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* Silence unused-variable warning when assertions are disabled.Kaelyn Uhrain2012-05-031-0/+1
| | | | llvm-svn: 156091
* Add -Wimplicit-fallthrough warning flag, which warns on fallthrough betweenRichard Smith2012-05-031-1/+192
| | | | | | | | | | | | cases in switch statements. Also add a [[clang::fallthrough]] attribute, which can be used to suppress the warning in the case of intentional fallthrough. Patch by Alexander Kornienko! The handling of C++11 attribute namespaces in this patch is temporary, and will be replaced with a cleaner mechanism in a subsequent patch. llvm-svn: 156086
* Fix a note without a SourceLocation.Richard Trieu2012-05-031-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | #define TEST int y; int x = y; void foo() { TEST } -Wuninitialized gives this warning: invalid-loc.cc:4:3: warning: variable 'y' is uninitialized when used here [-Wuninitialized] TEST ^~~~ invalid-loc.cc:2:29: note: expanded from macro 'TEST' #define TEST int y; int x = y; ^ note: initialize the variable 'y' to silence this warning 1 warning generated. The second note lacks filename, line number, and code snippet. This change will remove the fixit and only point to variable declaration. invalid-loc.cc:4:3: warning: variable 'y' is uninitialized when used here [-Wuninitialized] TEST ^~~~ invalid-loc.cc:2:29: note: expanded from macro 'TEST' #define TEST int y; int x = y; ^ invalid-loc.cc:4:3: note: variable 'y' is declared here TEST ^ invalid-loc.cc:2:14: note: expanded from macro 'TEST' #define TEST int y; int x = y; ^ 1 warning generated. llvm-svn: 156045
* Add FixItHint for -Wnull-conversion to initialize with an appropriate literal.David Blaikie2012-04-301-2/+2
| | | | | | Reviewed by Doug Gregor. llvm-svn: 155839
* [analyzer] Remove references to idx::TranslationUnit. Index is dead, ↵Jordy Rose2012-04-281-1/+1
| | | | | | cross-TU inlining never panned out. llvm-svn: 155751
* ThreadSafetyReporter: Manage diagnostics in a std::list.Benjamin Kramer2012-03-261-7/+5
| | | | | | | | | std::list is expensive, but so is std::sorting a SmallVector of SmallVectors of heavyweight PartialDiagnostics. Saves ~30k in a i386-linux-Release+Asserts clang build. llvm-svn: 153437
* improve on diagnostic and provide a fixit hint whenFariborz Jahanian2012-03-081-7/+19
| | | | | | | an uninitialized block variable is being called inside the block literal. // rdar://10817031 llvm-svn: 152271
* When overload resolution picks an implicitly-deleted special memberDouglas Gregor2012-02-151-1/+0
| | | | | | | | | function, provide a specialized diagnostic that indicates the kind of special member function (default constructor, copy assignment operator, etc.) and that it was implicitly deleted. Add a hook where we can provide more detailed information later. llvm-svn: 150611
* Specialize noreturn diagnostics for lambda expressions.Douglas Gregor2012-02-151-8/+28
| | | | llvm-svn: 150586
* Revert my patches which removed Diagnostic.h includes by moving some ↵Benjamin Kramer2012-02-071-1/+0
| | | | | | | | | | | | | | | | | | operator overloads out of line. This seems to negatively affect compile time onsome ObjC tests (which use a lot of partial diagnostics I assume). I have to come up with a way to keep them inline without including Diagnostic.h everywhere. Now adding a new diagnostic requires a full rebuild of e.g. the static analyzer which doesn't even use those diagnostics. This reverts commit 6496bd10dc3a6d5e3266348f08b6e35f8184bc99. This reverts commit 7af19b817ba964ac560b50c1ed6183235f699789. This reverts commit fdd15602a42bbe26185978ef1e17019f6d969aa7. This reverts commit 00bd44d5677783527d7517c1ffe45e4d75a0f56f. This reverts commit ef9b60ffed980864a8db26ad30344be429e58ff5. llvm-svn: 150006
* Move various diagnostic operator<< overloads out of line and remove includes ↵Benjamin Kramer2012-02-041-0/+1
| | | | | | | | | of Diagnostic.h. Fix all the files that depended on transitive includes of Diagnostic.h. With this patch in place changing a diagnostic no longer requires a full rebuild of the StaticAnalyzer. llvm-svn: 149781
* Thread safety analysis:Richard Smith2012-02-031-31/+43
| | | | | | | | | | | | * When we detect that a CFG block has inconsistent lock sets, point the diagnostic at the location where we found the inconsistency, and point a note at somewhere the inconsistently-locked mutex was locked. * Fix the wording of the normal (non-loop, non-end-of-function) case of this diagnostic to not suggest that the mutex is going out of scope. * Fix the diagnostic emission code to keep a warning and its note together when sorting the diagnostics into source location order. llvm-svn: 149669
* Revert various template unreachability code I committed accidentally.David Blaikie2012-01-241-4/+5
| | | | | | r148774, r148775, r148776, r148777 llvm-svn: 148780
* Simple hack to do unreachable code analysis on template patterns.David Blaikie2012-01-241-5/+4
| | | | llvm-svn: 148774
* Make clang's AST model sizeof and typeof with potentially-evaluated operands ↵Eli Friedman2012-01-211-2/+6
| | | | | | correctly, similar to what we already do with typeid. llvm-svn: 148610
* Improve 0-argument -Wvexing-parse diagnostic by adding notes with fix-its:Richard Smith2012-01-121-33/+6
| | | | | | | | | | | | | | | | | | | | | | | - If the declarator is at the start of a line, and the previous line contained another declarator and ended with a comma, then that comma was probably a typo for a semicolon: int n = 0, m = 1, l = 2, // k = 5; myImportantFunctionCall(); // oops! - If removing the parentheses would correctly initialize the object, then produce a note suggesting that fix. - Otherwise, if there is a simple initializer we can suggest which performs value-initialization, then provide a note suggesting a correction to that initializer. Sema::Declarator now tracks the location of the comma prior to the declarator in the declaration, if there is one, to facilitate providing the note. The code to determine an appropriate initializer from the -Wuninitialized warning has been factored out to allow use in both that and -Wvexing-parse. llvm-svn: 148072
* Unweaken vtables as per ↵David Blaikie2011-12-201-0/+2
| | | | | | http://llvm.org/docs/CodingStandards.html#ll_virtual_anch llvm-svn: 146959
* This patch extends thread safety analysis with support for the ↵DeLesley Hutchins2011-12-081-2/+2
| | | | | | scoped_lockable attribute. llvm-svn: 146174
* Further tweak -Wurneachable-code and templates by allowing the warning to run onTed Kremenek2011-12-011-14/+6
| | | | | | | | | explicit template specializations (which represent actual functions somebody wrote). Along the way, refactor some other code which similarly cares about whether or not they are looking at a template instantiation. llvm-svn: 145547
* Don't run -Wunreachable-code on template instantiations. Different ↵Ted Kremenek2011-11-301-2/+8
| | | | | | instantiations may produce different unreachable code results, and it is very difficult for us to prove that ALL instantiations of a template have specific unreachable code. If we come up with a better solution, then we can revisit this, but this approach will at least greatly reduce the noise of this warning for code that makes use of templates. llvm-svn: 145520
* Rename AnalysisContext to AnalysisDeclContext. Not only is this name more ↵Ted Kremenek2011-10-241-4/+4
| | | | | | accurate, but it frees up the name AnalysisContext for other uses. llvm-svn: 142782
* [analyzer] Remove LocationContext creation methods from AnalysisManager, and ↵Ted Kremenek2011-10-231-1/+1
| | | | | | | | change clients to use AnalysisContext instead. WIP to remove/reduce ExprEngine's usage of AnalysisManager. llvm-svn: 142739
* Thread safety analysis refactoring: invalid lock expressions.DeLesley Hutchins2011-10-211-2/+9
| | | | llvm-svn: 142666
* Only warn at self-initialization if some later use is always uninitialized.Matt Beaumont-Gay2011-10-191-2/+13
| | | | llvm-svn: 142538
* Tweak -Wuninitialized's handling of 'int x = x' to report that as the root ↵Ted Kremenek2011-10-131-24/+46
| | | | | | cause of an uninitialized variable IFF there are other uses of that uninitialized variable. Fixes <rdar://problem/9259237>. llvm-svn: 141881
* Don't suggest 'noreturn' for function template instantiations, becauseDouglas Gregor2011-10-101-1/+17
| | | | | | | it might be wrong for other instantiations of the same function template. Fixes PR10801. llvm-svn: 141559
* Rename Diagnostic to DiagnosticsEngine as per issue 5397David Blaikie2011-09-251-12/+12
| | | | llvm-svn: 140478
* Thread safety: refactoring various out of scope warnings to use the same ↵Caitlin Sadowski2011-09-151-12/+15
| | | | | | inteface. This eliminates a lot of unnecessary duplicated code. llvm-svn: 139801
* Thread safety: reverting to use separate warning for requirement to hold any ↵Caitlin Sadowski2011-09-141-4/+9
| | | | | | lock llvm-svn: 139723
* Thread safety: Initializing var before exhaustive switch statement to deal ↵Caitlin Sadowski2011-09-131-1/+1
| | | | | | with extraneous warning produced by gcc but not clang llvm-svn: 139611
* Switch -Wreturn-type to completely rely on the CFG model of no-return.Chandler Carruth2011-09-131-47/+18
| | | | | | | This deletes a bunch of crufty code, and allows more logic sharing between the analyzer and the warnings. llvm-svn: 139594
* Show either a location or a fixit note, not both, for uninitialized variable ↵David Blaikie2011-09-101-52/+51
| | | | | | warnings. llvm-svn: 139463
* Fix a diagnostics crasher with -Wmissing-noreturn in Objective-CDouglas Gregor2011-09-101-1/+4
| | | | | | | methods, and improve the diagnostic slightly along the way. Fixes <rdar://problem/10098695>. llvm-svn: 139446
* Thread safety: This patch deals with previously unhandled cases when ↵Caitlin Sadowski2011-09-091-0/+4
| | | | | | building lock expressions. We now resolve this expressions, avoid crashing when encountering cast expressions, and have a diagnostic for unresolved lock expressions llvm-svn: 139370
* Thread Safety: Moving the analysis to a new fileCaitlin Sadowski2011-09-091-799/+1
| | | | llvm-svn: 139369
* Thread safety: refactoring test casesCaitlin Sadowski2011-09-091-14/+3
| | | | llvm-svn: 139368
* Thread safety: refactoring to use an error handlerCaitlin Sadowski2011-09-091-134/+251
| | | | llvm-svn: 139367
* Thread safety: small edit to unused variation on warning left in by accident ↵Caitlin Sadowski2011-09-081-2/+1
| | | | | | from earlier commit llvm-svn: 139331
* Thread Safety: In C++0x Mutexes are the objects that control access to ↵Caitlin Sadowski2011-09-081-90/+80
| | | | | | shared variables, while Locks are the objects that acquire and release Mutexes. We switch to this new terminology. llvm-svn: 139321
* Thread Safety: adding basic no thread safety analysis optionCaitlin Sadowski2011-09-081-0/+2
| | | | llvm-svn: 139310
* Thread safety: Adding basic support for locks required and excluded attributesCaitlin Sadowski2011-09-081-2/+51
| | | | llvm-svn: 139308
* Thread safety: shared vs. exclusive locksCaitlin Sadowski2011-09-081-64/+152
| | | | llvm-svn: 139307
* Thread Safety: Patch to implement delayed parsing of attributes within aCaitlin Sadowski2011-09-081-0/+2
| | | | | | | | class scope. This patch was also written by DeLesley Hutchins. llvm-svn: 139301
* Improve the diagnostic text for -Wmissing-noreturn to include the nameChandler Carruth2011-08-311-3/+8
| | | | | | | | | | | | | | of the function in question when applicable (that is, not for blocks). Patch by Joerg Sonnenberger with some stylistic tweaks by me. When discussing this weth Joerg, streaming the decl directly into the diagnostic didn't work because we have a pointer-to-const, and the overload doesn't accept such. In order to make my style tweaks to the patch, I first changed the overload to accept a pointer-to-const, and then changed the diagnostic printing layer to also use a pointer-to-const, cleaning up a gross line of code along the way. llvm-svn: 138854
* Thread safety: added basic handling for pt_guarded_by/var and guarded_by/var ↵Caitlin Sadowski2011-08-291-4/+120
| | | | | | annotations. We identify situations where we are accessing (reading or writing) guarded variables, and report an error if the appropriate locks are not held. llvm-svn: 138774
* Thread safety: various minor bugfixes, with test casesCaitlin Sadowski2011-08-291-13/+34
| | | | | | This patch is by DeLesley Hutchins. llvm-svn: 138738
* In C++0x mode, suggest nullptr as the initializer for an uninitializedDouglas Gregor2011-08-271-1/+3
| | | | | | pointer variable. Patch by David Blaikie! llvm-svn: 138687
* Thread safety: Fix a few typos in last commit -- use LockID instead of Lock ↵Caitlin Sadowski2011-08-241-14/+14
| | | | | | in comments and start a couple methods with a lowercase letter llvm-svn: 138460
* Start reworking -Wunreachable-code. The original analysis had serious flaws ↵Ted Kremenek2011-08-231-9/+15
| | | | | | | | | | with how it handled SCC's of dead code, or simply having false negatives by overly suppressing warnings. WIP. llvm-svn: 138410
* Constify the result of CFGStmt::getStmt().Ted Kremenek2011-08-231-6/+6
| | | | llvm-svn: 138408
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