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20 Commits

Author SHA1 Message Date
Lenny Maiorani 5066858bcd Removing strncpy() checking in CString checker for now. Some significant changes need to be made to properly support modeling of it since it potentially leaves strings non-null terminated. 
llvm-svn: 130758
 2011-05-03 16:34:26 +00:00
Lenny Maiorani 0b510279c6 Implements strncasecmp() checker and simplifies some of the logic around creating substrings if necessary and calling the appropriate StringRef::compare/compare_lower(). 
llvm-svn: 130708
 2011-05-02 19:05:49 +00:00
Lenny Maiorani 4af23c8159 Implements strcasecmp() checker in Static Analyzer. 
llvm-svn: 130398
 2011-04-28 15:09:11 +00:00
Argyrios Kyrtzidis a9b630e4d7 Emit a -Wnull-dereference warning for "*null" not just "*null = something". Addresses rdar://9269271. 
llvm-svn: 130207
 2011-04-26 17:41:22 +00:00
Lenny Maiorani e553e40467 Implements the strncmp() checker just like the strcmp() checker, but with bounds. Requires LLVM svn r129582. 
llvm-svn: 130161
 2011-04-25 22:21:00 +00:00
Chris Lattner 57540c5be0 fix a bunch of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129559
 2011-04-15 05:22:18 +00:00
Lenny Maiorani f3539ad5c7 This patch adds modeling of strcmp() to the CString checker. Validates inputs are not NULL and are real C strings, then does the comparison and binds the proper return value. Unit tests included. 
llvm-svn: 129364
 2011-04-12 17:08:43 +00:00
Lenny Maiorani 467dbd5f13 strcat() and strncat() model additions to CStringChecker. 
Validates inputs are not NULL, checks for overlapping strings, concatenates the strings checking for buffer overflow, sets the length of the destination string to the sum of the s1 length and the s2 length, binds the return value to the s1 value.

llvm-svn: 129215
 2011-04-09 15:12:58 +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
Carl Norum 58d489fc6e Fix tests to account for new warning "expected ';' at end of declaration list". Sorry, folks! 
llvm-svn: 127188
 2011-03-07 22:57:45 +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 2c49ec7f1d [analyzer] Migrate NSErrorChecker and DereferenceChecker to CheckerV2. 
They cooperate in that NSErrorChecker listens for ImplicitNullDerefEvent events that
DereferenceChecker can dispatch.
ImplicitNullDerefEvent is when we dereferenced a location that may be null.

llvm-svn: 126659
 2011-02-28 17:36:18 +00:00
Argyrios Kyrtzidis c08d89e6c2 Allow passing a list of comma separated checker names to -analyzer-checker, e.g: 
-analyzer-checker=cocoa,unix

llvm-svn: 126372
 2011-02-24 08:42:20 +00:00
Ted Kremenek fb1a79af7a Add CStringChecker support for strncpy. Patch by Lenny Maiorani! 
llvm-svn: 126188
 2011-02-22 04:58:34 +00:00
Ted Kremenek 280a01fa1b Add CStringChecker support for strnlen. Patch by Lenny Maiorani! 
llvm-svn: 126187
 2011-02-22 04:55:05 +00:00
Argyrios Kyrtzidis 2d3905ffac [analyzer] Use the new registration mechanism on some of the experimental checks. These are: 
CStringChecker
   ChrootChecker
   MallocChecker
   PthreadLockChecker
   StreamChecker
   UnreachableCodeChecker

MallocChecker creates implicit dependencies between checkers and needs to be handled differently.

llvm-svn: 125598
 2011-02-15 21:25:03 +00:00
Jordy Rose 722f558f07 Model the effects of strcpy() and stpcpy() in CStringChecker. Other changes: 
- Fix memcpy() and friends to actually invalidate the destination buffer.
- Emit a different message for out-of-bounds buffer accesses if the buffer is being written to.
- When conjuring symbols, let ValueManager figure out the type.

llvm-svn: 111120
 2010-08-16 07:51:42 +00:00
Jordy Rose 2a2e21c902 Update CStringChecker to take advantage of the new metadata symbols and region change callback. Now does basic tracking of string length for general regions. Currently this is still only used for modeling strlen(). 
llvm-svn: 111081
 2010-08-14 21:02:52 +00:00
Tom Care 29a6250bf0 Added some false positive checking to UnreachableCodeChecker 
- Allowed reporting of dead macros
- Added path walking function to search for false positives in conditional statements
- Updated some affected tests
- Added some false positive test cases

llvm-svn: 109561
 2010-07-27 23:30:21 +00:00
Jordy Rose b052e8f436 Groundwork for C string length tracking. Currently only handles the length of constant string literals, which is not too helpful, and only calls to strlen() are checked. 
llvm-svn: 109480
 2010-07-27 01:37:31 +00:00