Commit Graph

7 Commits

Author SHA1 Message Date
Pavel Labath fce1b03ee7 [analyzer] Assume new returns non-null even under -fno-exceptions
Summary:
-fno-exceptions does not implicitly attach a nothrow specifier to every operator
new. Even in this mode, non-nothrow new must not return a null pointer. Failure
to allocate memory can be signalled by other means, or just by killing the
program. This behaviour is consistent with the compiler - even with
-fno-exceptions, the generated code never tests for null (and would segfault if
the opeator actually happened to return null).

Reviewers: jordan_rose

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1528

llvm-svn: 189452
2013-08-28 08:04:08 +00:00
Jordan Rose 5e2b3a30a0 [analyzer] Enable the new edge algorithm by default.
...but don't yet migrate over the existing plist tests. Some of these
would be trivial to migrate; others could use a bit of inspection first.
In any case, though, the new edge algorithm seems to have proven itself,
and we'd like more coverage (and more usage) of it going forwards.

llvm-svn: 183165
2013-06-03 23:00:19 +00:00
Anna Zaks e4cfcd4e41 [analyzer] Improve the malloc checker stack hint message
llvm-svn: 179580
2013-04-16 00:22:55 +00:00
Jordan Rose 10ad081fc6 [analyzer] Re-enable cplusplus.NewDelete (but not NewDeleteLeaks).
As mentioned in the previous commit message, the use-after-free and
double-free warnings for 'delete' are worth enabling even while the
leak warnings still have false positives.

llvm-svn: 178891
2013-04-05 17:55:07 +00:00
Anton Yartsev 01acbcebbb [analyzer] Moving cplusplus.NewDelete to alpha.* for now.
llvm-svn: 178529
2013-04-02 05:59:24 +00:00
Anton Yartsev 3dfc33e3ac [analyzer] Enabled unix.Malloc checker.
+ Refactoring.

llvm-svn: 178388
2013-03-30 00:50:37 +00:00
Anton Yartsev 13df03624b [analyzer] Adds cplusplus.NewDelete checker that check for memory leaks, double free, and use-after-free problems of memory managed by new/delete.
llvm-svn: 177849
2013-03-25 01:35:45 +00:00