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13 Commits

Author SHA1 Message Date
Gabor Horvath e40c71c10a [analyzer] Individual configuration options can be specified for checkers. 
Reviewed by: Anna Zaks

Original patch by: Aleksei Sidorin

Differential Revision: http://reviews.llvm.org/D7905

llvm-svn: 231266
 2015-03-04 17:59:34 +00:00
Anton Yartsev 5b5c7cec08 [analyzer] Different handling of alloca(). 
+ separate bug report for "Free alloca()" error to be able to customize checkers responsible for this error.
+ Muted "Free alloca()" error for NewDelete checker that is not responsible for c-allocated memory, turned on for unix.MismatchedDeallocator checker.
+ RefState for alloca() - to be able to detect usage of zero-allocated memory by upcoming ZeroAllocDereference checker.
+ AF_Alloca family to handle alloca() consistently - keep proper family in RefState, handle 'alloca' by getCheckIfTracked() facility, etc.
+ extra tests.

llvm-svn: 229850
 2015-02-19 13:36:20 +00:00
Anton Yartsev 0578959981 [analyzer] These implements unix.MismatchedDeallocatorChecker checker. 
+ Improved display names for allocators and deallocators

The checker checks if a deallocation function matches allocation one. ('free' for 'malloc', 'delete' for 'new' etc.)

llvm-svn: 178250
 2013-03-28 17:05:19 +00:00
Ted Kremenek 722398f1d4 Fix analyzer tests. 
llvm-svn: 162588
 2012-08-24 20:39:55 +00:00
Anna Zaks 0cdce4df76 [analyzer] Turn on by default the Malloc Checker and a couple of CString 
checks:

- unix.Malloc - Checks for memory leaks, double free, use-after-free.
- unix.cstring.NullArg - Checks for null pointers passed as arguments to
CString functions + evaluates CString functions.
- unix.cstring.BadSizeArg - Checks for common anti-patterns in
strncat size argument.

llvm-svn: 150988
 2012-02-20 21:10:37 +00:00
Anna Zaks cd37bf4ec8 [analyzer] Split the MallocChecker into two versions - pessimistic and 
optimistic.

TODO: actually implement the pessimistic version of the checker. Ex: it
needs to assume that any function that takes a pointer might free it.

The optimistic version relies on annotations to tell us which functions
can free the pointer.

llvm-svn: 150111
 2012-02-08 23:16:52 +00:00
Ted Kremenek 3f955e6d89 [analyzer] rename all experimental checker packages to have 'experimental' be the common root package. 
llvm-svn: 136835
 2011-08-03 23:14:55 +00:00
Ted Kremenek 49c79790de Rework checker "packages" and groups to be more hierarchical. 
llvm-svn: 128187
 2011-03-24 00:28:47 +00:00
Argyrios Kyrtzidis 9eb02dfa89 [analyzer] Remove '-analyzer-check-objc-mem' flag, the nominee for best misnomer award. 
llvm-svn: 126676
 2011-02-28 19:49:42 +00:00
Argyrios Kyrtzidis f3ed8b631d [analyzer] Migrate BuiltinFunctionChecker to CheckerV2. 
llvm-svn: 126611
 2011-02-28 01:27:07 +00:00
Argyrios Kyrtzidis 183f0fb4cf [analyzer] Migrate MallocChecker to CheckerV2. 
llvm-svn: 126606
 2011-02-28 01:26:35 +00:00
Argyrios Kyrtzidis b388f77ad9 [analyzer] Remove '-analyzer-experimental-internal-checks' flag, it doesn't have any checkers associated with it anymore. 
llvm-svn: 126440
 2011-02-24 21:43:08 +00:00
Jordy Rose 3597b21f20 Catch free()s on non-regions and regions known to be not from malloc(), by checking the symbol type and memory space. 
llvm-svn: 105547
 2010-06-07 19:32:37 +00:00