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Author SHA1 Message Date
Tareq A. Siraj 6dfa25a19f Sema for Captured Statements 
Add CapturedDecl to be the DeclContext for CapturedStmt, and perform semantic
analysis. Currently captures all variables by reference.

TODO: templates

Author: Ben Langmuir <ben.langmuir@intel.com>

Differential Revision: http://llvm-reviews.chandlerc.com/D433

llvm-svn: 179618
 2013-04-16 19:37:38 +00:00
Jordan Rose b1e3e5f553 -Warc-repeated-use-of-weak: fix a use-of-uninitialized and add a test case. 
Fix-up for r165718, should get the buildbots back online.

llvm-svn: 165723
 2012-10-11 17:02:00 +00:00
Jordan Rose 2248765591 -Warc-repeated-use-of-weak: Check messages to property accessors as well. 
Previously, [foo weakProp] was not being treated the same as foo.weakProp.
Now, for every explicit message send, we check if it's a property access,
and if so, if the property is weak. Then for every assignment of a
message, we have to do the same thing again.

This is a potentially expensive increase because determining whether a
method is a property accessor requires searching through the methods it
overrides. However, without it -Warc-repeated-use-of-weak will miss cases
from people who prefer not to use dot syntax. If this turns out to be
too expensive, we can try caching the result somewhere, or even lose
precision by not checking superclass methods. The warning is off-by-default,
though.

<rdar://problem/12407765>

llvm-svn: 165718
 2012-10-11 16:06:21 +00:00
Jordan Rose e723a27ffe -Warc-repeated-use-of-weak: look through explicit casts on assigned values. 
Reading from a weak property, casting the result, and assigning to a
strong pointer should still be considered safe.

llvm-svn: 165629
 2012-10-10 16:43:06 +00:00
Anna Zaks 97c7ce3368 Move isObjCSelf into Expr. 
llvm-svn: 164966
 2012-10-01 20:34:04 +00:00
Jordan Rose 62b379873d Pull ScopeInfo implementation into its own file. 
The infrastructure for -Warc-repeated-use-of-weak got a little too heavy
to leave sitting at the top of Sema.cpp.

No functionality change.

llvm-svn: 164856
 2012-09-28 22:21:39 +00:00