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4 Commits

Author SHA1 Message Date
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