[analyzer] strncpy: Special-case a length of 0 to avoid an incorrect warning.

We check the address of the last element accessed, but with 0 calculating that
address results in element -1. This patch bails out early (and avoids a bunch
of other work at that).

Fixes PR12807.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156769 91177308-0d34-0410-b5e6-96231b3b80d8
Teach the driver on Linux to respect -nodefaultlibs.

Patch from Andrew C. Morrow.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156771 91177308-0d34-0410-b5e6-96231b3b80d8
Implement IRGen for C++11's "T{1, 2, 3}", where T is an aggregate and the
expression is treated as an lvalue.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156781 91177308-0d34-0410-b5e6-96231b3b80d8
[objcmt] When rewriting to array/dictionary literals, add an explicit
cast to 'id' for any argument that requires it.

Part of rdar://11438360.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156782 91177308-0d34-0410-b5e6-96231b3b80d8
Slightly generalize FileCheck patterns to unbreak -Asserts builds.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156783 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Fix a crash in templated code which uses blocks.

We should investigate why signature info is not set in this case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156784 91177308-0d34-0410-b5e6-96231b3b80d8
Recover properly from a redundant 'typename' before a non-nested name. This is
permitted as a Microsoft extension. Patch by William Wilson! (Plus some minor
tweaking by me.)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156786 91177308-0d34-0410-b5e6-96231b3b80d8
objc: allow typedef'ing an id to a pointer to a c-struct only.
// rdar://11356439


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156788 91177308-0d34-0410-b5e6-96231b3b80d8
[objcmt] When rewriting to subscripting syntax, make sure we put
the receiver in parentheses when necessary.

Part of rdar://11438360

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156789 91177308-0d34-0410-b5e6-96231b3b80d8
Change the mangling of a ref-qualifier on a function type so that
it is placed in a position which is never ambiguous with a
reference-to-function type.  This follows some recent discussion
and ensuing proposal on cxx-abi-dev.  It is not necessary to
change the mangling of CV-qualifiers because you cannot
apply CV-qualification in the normal sense to a function type.
It is not necessary to change the mangling of ref-qualifiers on
method declarations because they appear in an unambiguous
location.

In addition, mangle CV-qualifiers and ref-qualifiers on function
types when they occur in positions other than member pointers
(that is, when they appear as template arguments).

This is a minor ABI break with previous releases of clang.  It
is not considered critical because (1) ref-qualifiers are
relatively rare, since AFAIK we're the only implementing compiler,
and (2) they're particularly likely to come up in contexts that
do not rely on the ODR for correctness.  We apologize for any
inconvenience;  this is the right thing to do.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156794 91177308-0d34-0410-b5e6-96231b3b80d8
Fold the six functions checking explicitly-defaulted special member functions
into one. These were all performing almost identical checks, with different bugs
in each of them.

This fixes PR12806 (we weren't setting the exception specification for an
explicitly-defaulted, non-user-provided default constructor) and enforces
8.4.2/2's rule that an in-class defaulted member must exactly match the implicit
parameter type.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156802 91177308-0d34-0410-b5e6-96231b3b80d8
PR12826: Converting an lvalue to an xvalue is a no-op conversion, not an lvalue-to-rvalue conversion.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156803 91177308-0d34-0410-b5e6-96231b3b80d8
Test file I forgot to 'svn add' in r156802.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156805 91177308-0d34-0410-b5e6-96231b3b80d8
PR12798: Don't drop part of the nested name specifier when instantiating a
pseudo-destructor expression. This can affect whether virtual dispatch for
the destructor call is bypassed.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156806 91177308-0d34-0410-b5e6-96231b3b80d8
Further improvement to wording of overload resolution diagnostics, and including
the sole parameter name in the diagnostic in more cases. Patch by Terry Long!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156807 91177308-0d34-0410-b5e6-96231b3b80d8