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144 Commits

Author SHA1 Message Date
Ted Kremenek
6e95bfc6a5 Fix crash in StoreManager::CastRegion() when the base region is a type with 0 size. 
llvm-svn: 100594
 2010-04-07 00:46:49 +00:00
Ted Kremenek
f969841a1a Teach MemRegion::getBaseRegion() about ObjCIvarRegions. We want to treat 
them the same way as fields.  This fixes a regression in RegionStore::RemoveDeadbindings()
that emerged from going to the cluster-based analysis.

llvm-svn: 100570
 2010-04-06 22:06:03 +00:00
Zhongxing Xu
0f290ec0f0 Fix PR 6725. It looks like the copy constructor gets elided during inlining. 
This bug only shows up with GCC 4.4.1 Release-Asserts build.

llvm-svn: 100516
 2010-04-06 03:01:56 +00:00
Zhongxing Xu
faa4905e0c Always assume block-level expressions in the caller are alive when analyzing 
the callee.

llvm-svn: 100429
 2010-04-05 13:16:29 +00:00
Zhongxing Xu
973b5f55f8 Since now we process regions in clusters when removing dead bindings, this 
code can be removed.

llvm-svn: 100428
 2010-04-05 13:00:12 +00:00
Zhongxing Xu
640aad7667 Use the element type to compute the array size when the base region is a VarRegion. 
Patch by Jordy Rose.

llvm-svn: 100099
 2010-04-01 08:20:27 +00:00
Zhongxing Xu
920070cfe7 Initial support for visiting CXXMemberCallExpr. 
llvm-svn: 100098
 2010-04-01 07:58:50 +00:00
Zhongxing Xu
8cea7f6f70 Improve C++ constructor handling. 
llvm-svn: 100080
 2010-04-01 03:47:27 +00:00
Ted Kremenek
c3e1f2f9ba Fix a bug (PR 6699) in RegionStore::RemoveDeadBindings() where 
array values with a non-zero offset would get prematurely pruned from the store.

llvm-svn: 100067
 2010-04-01 00:15:55 +00:00
Douglas Gregor
a771f46c82 Reinstate my CodeModificationHint -> FixItHint renaming patch, without 
the C-only "optimization".

llvm-svn: 100022
 2010-03-31 17:46:05 +00:00
Douglas Gregor
30e631862f Revert r100008, which inexplicably breaks the clang-i686-darwin10 builder 
llvm-svn: 100018
 2010-03-31 17:25:35 +00:00
Douglas Gregor
3baad0d4f7 Rename CodeModificationHint to FixItHint, since we've been using the 
term "fix-it" everywhere and even *I* get tired of long names
sometimes. No functionality change.

llvm-svn: 100008
 2010-03-31 15:31:50 +00:00
John McCall
d9c7c6568e Introduce a new kind of derived-to-base cast which bypasses the need for 
null checks, and make sure we elide null checks when accessing base class
members.

llvm-svn: 99963
 2010-03-30 23:58:03 +00:00
Ted Kremenek
2d107f9d1d RegionStore: specially handle loads from integer global variables declared 'const'. 
Fixes a false positive reported in PR 6288.

llvm-svn: 99922
 2010-03-30 20:31:04 +00:00
Ted Kremenek
f7c226da00 Use 'const Optional<SVal>&' to avoid an extra copy. 
llvm-svn: 99921
 2010-03-30 20:30:52 +00:00
Rafael Espindola
c50c27cca8 the big refactoring bits of PR3782. 
This introduces FunctionType::ExtInfo to hold the calling convention and the
noreturn attribute. The next patch will extend it to include the regparm
attribute and fix the bug.

llvm-svn: 99920
 2010-03-30 20:24:48 +00:00
Ted Kremenek
4be6a75884 Change the analyzer to recognize (but ignore) assignments to isa. Fixes PR 6302. 
llvm-svn: 99904
 2010-03-30 18:24:54 +00:00
Rafael Espindola
8756268ee5 Be a bit more consistent in using operator-> 
This patch moves some methods from QualType to Type and changes the users to
use -> instead of .

llvm-svn: 99805
 2010-03-29 03:39:46 +00:00
Benjamin Kramer
c048322523 Checker: random include cleanup. 
llvm-svn: 99731
 2010-03-27 21:19:47 +00:00
Ted Kremenek
0f250e4c5b Fix NoReturnFunctionChecker to properly look at a function's type 
when determining if it returns.  Fixes <rdar://problem/7796563>.

llvm-svn: 99663
 2010-03-26 22:57:13 +00:00
Zhongxing Xu
b6e1c13c36 Add methods to remove a GDM entry. 
Instead of setting the ReturnExpr GDM to NULL, remove it.

llvm-svn: 99470
 2010-03-25 01:39:39 +00:00
Ted Kremenek
8edc6dfd20 Use llvm::SmallString instead of std::string. 
llvm-svn: 99442
 2010-03-24 22:39:47 +00:00
Ted Kremenek
aeaf3d2ce6 Improve static analyzer diagnostic concerning the use of 'mktemp' 
llvm-svn: 99441
 2010-03-24 22:39:45 +00:00
Zhongxing Xu
e248dca300 Bind the constructed object value to CXXConstructExpr. 
llvm-svn: 99271
 2010-03-23 09:13:17 +00:00
Zhongxing Xu
b473f91498 update CMakeLists.txt 
llvm-svn: 99269
 2010-03-23 08:14:19 +00:00
Zhongxing Xu
bf2f0d74a2 Clear the return expr GDM after using it. 
llvm-svn: 99268
 2010-03-23 08:09:29 +00:00
Zhongxing Xu
1ff3dcef1f Add a AggExprVisitor class. It contains lots of boiler 
plate code for evaluating expressions of C++ class type.

llvm-svn: 99267
 2010-03-23 07:32:14 +00:00
Zhongxing Xu
7fffbcc756 merge line. 
llvm-svn: 99259
 2010-03-23 05:13:26 +00:00
Zhongxing Xu
3c0c81a4d4 Since we now may have basicblocks with the same block is in different function, 
change the block counter map from unsigned -> unsigned to 
<StackFrameContext*, unsigned> -> unsigned.

llvm-svn: 99255
 2010-03-23 05:05:02 +00:00
Ted Kremenek
bb6f5af4a4 Tweak null dereference diagnostics to give clearer diagnostics when 
a null dereference results from a field access.

llvm-svn: 99236
 2010-03-23 01:11:38 +00:00
Ted Kremenek
28ec56d7dd Improve the diagnostics for the UndefinedAssignmentChecker when an 
uninitialized value is used in the LHS of a compound assignment.

llvm-svn: 99221
 2010-03-22 22:16:26 +00:00
Kovarththanan Rajaratnam
a6405f7a95 Sort calls to add_clang_library() 
llvm-svn: 99191
 2010-03-22 18:16:06 +00:00
Ted Kremenek
bf1dbf37e7 Delete the new visitor if an old one already exists. 
llvm-svn: 99114
 2010-03-21 04:38:40 +00:00
Ted Kremenek
3460b539df Reapply r99024 (but with the memory issue now fixed). 
llvm-svn: 99064
 2010-03-20 18:02:01 +00:00
Ted Kremenek
92713e7ec3 Check if a BugReporterVisitor has already been added to a BugReporterContext. 
This avoids redundant diagnostics.

llvm-svn: 99063
 2010-03-20 18:01:57 +00:00
Daniel Dunbar
4e3e0991e9 Revert r99024, "Augment path diagnostics to include displaying when a message 
expression", statistical evidence indicates it has some kind of memory error.

llvm-svn: 99040
 2010-03-20 04:28:39 +00:00
Ted Kremenek
8a8e3e61aa Augment path diagnostics to include displaying when a message expression 
is not evaluated because the receiver is nil.

llvm-svn: 99024
 2010-03-20 01:17:30 +00:00
Ted Kremenek
c342c9c001 Refactor argument checking in CallAndMessageChecker to be the same 
for both CallExprs and ObjCMessageExprs.

llvm-svn: 98800
 2010-03-18 03:22:29 +00:00
Ted Kremenek
9c05f4ef69 Detect pass-by-value arguments that are structs that contain 
uninitialized data.

llvm-svn: 98796
 2010-03-18 02:17:27 +00:00
Ted Kremenek
e174fda979 Tweak dead stores checker to not emit a warning when initialization 
a scalar variable with a scalar parameter.  This is a
form of defensive programming.  If the variable is unused,
it will be caused by -Wunused-variable.

llvm-svn: 98795
 2010-03-18 01:22:39 +00:00
Zhongxing Xu
03fd76663e Mark CXXThisRegion in the current or parent stack frame context as live so that 
their bindings are not removed.

llvm-svn: 98705
 2010-03-17 03:35:08 +00:00
Zhongxing Xu
0eb690390d Add VisitCXXContructExpr logic to the analyzer. This still has not fully worked 
since RemoveDeadBinding mistakenly remove the binding to CXXThisRegion. 

llvm-svn: 98629
 2010-03-16 13:14:16 +00:00
Jeffrey Yasskin
f6442f80cb Allow users to set CPPFLAGS and CXXFLAGS on the make command line. 
Tested: make CPPFLAGS=-m64 CXXFLAGS=-m64 -j8 && (cd tools/clang;make test)
llvm-svn: 98399
 2010-03-12 22:55:16 +00:00
Ted Kremenek
1794ec4a30 Simplify assertion. 
llvm-svn: 98176
 2010-03-10 19:09:37 +00:00
Ted Kremenek
fe697ebaaf Remove '#if 0' code. Lazy compound values have proven their worth. 
llvm-svn: 98175
 2010-03-10 19:09:34 +00:00
Ted Kremenek
9e92d3f99d Remove the subregion map cache. It is no longer used. 
llvm-svn: 98161
 2010-03-10 16:38:44 +00:00
Ted Kremenek
2ce82b2323 Fix stale comment. 
llvm-svn: 98160
 2010-03-10 16:38:41 +00:00
Ted Kremenek
ddce4a3d0f Really apply (unnoticed weird git-svn merge conflict in 98144): Refactor RegionStore::RemoveDeadBindings to use the same core cluster analysis algorithm as RegionStore::InvalidateRegions(). 
Beyond simplifying the algorithm significantly, we no longer
need to build subregion maps in RemoveDeadBindings().  This
and other changes cause a significant speedup: the time to
analyze sqlite3.c (single core) drops by 14%.

llvm-svn: 98159
 2010-03-10 16:32:56 +00:00
Ted Kremenek
ba2e6c6b73 Refactor RegionStore::RemoveDeadBindings to use the same core 
cluster analysis algorithm as RegionStore::InvalidateRegions().

Beyond simplifying the algorithm significantly, we no longer
need to build subregion maps in RemoveDeadBindings().  This
and other changes cause a significant speedup: the time to
analyze sqlite3.c (single core) drops by 14%.

llvm-svn: 98144
 2010-03-10 07:20:03 +00:00
Ted Kremenek
a2536b642c Refactor some of RegionStore's InvalidateRegionsWorker class 
into a 'ClusterAnalysis' parent class.  The idea is
to potentially reuse this for reworking RemoveDeadBindings.

llvm-svn: 98143
 2010-03-10 07:19:59 +00:00