Richard Trieu [Thu, 28 Jul 2011 20:30:10 +0000 (20:30 +0000)]
Fix a test case that was intermittently failing. The issue was that instantiations are not stored in an order preserving structure, so the print order may be impacted. Modified test case to do two FileCheck passes to ensure that both instantiations are in the same place.
Test originially commited at r136306 and temporarily silenced at r136348.
Added basic parsing for all remaining attributes, thread safety
analysis. This includes checking that the attributes are applied in the
correct contexts and with the correct number of arguments.
Douglas Gregor [Thu, 28 Jul 2011 19:49:54 +0000 (19:49 +0000)]
Make the deserialization of Sema::PendingInstantiations lazy. At this
point, ASTReader::InitializeSema() has very little interesting work,
*except* issues stemming from preloaded declarations. That's something
we'll still need to cope with.
Douglas Gregor [Thu, 28 Jul 2011 19:26:52 +0000 (19:26 +0000)]
Promote the deserialized PendingInstantiations vector from being a
Module member to being an ASTReader member; we want it to be
centralized for lazy deserialization.
Douglas Gregor [Thu, 28 Jul 2011 19:11:31 +0000 (19:11 +0000)]
Lazily deserialize Sema::VTableUses. Plus, fix the utterly and
completely broken deserialization mapping code we had for VTableUses,
which would have broken horribly as soon as our local-to-global ID
mapping became interesting.
Switch the ModuleManager over to using a FileManager and FileEntry* as part of its lookup instead of the filename. This is a more correct unique identifier, as symlinks can be handled by the FileManager.
Douglas Gregor [Thu, 28 Jul 2011 14:41:43 +0000 (14:41 +0000)]
Move a Module's ReferencedSelectorsData into the ASTReader itself, so
that it accumulates referenced selectors from each of the modules/PCH
files as they are loaded. No actual functionality change, yet.
Douglas Gregor [Thu, 28 Jul 2011 14:20:37 +0000 (14:20 +0000)]
Make Sema::LocallyScopedExternalDecls lazily deserialized. In theory,
we could turn this into an on-disk hash table so we don't load the
whole thing the first time we need it. However, it tends to be very,
very small (i.e., empty) for most precompiled headers, so it isn't all
that interesting.
John McCall [Thu, 28 Jul 2011 07:23:35 +0000 (07:23 +0000)]
Fix a couple of problems with initialization and assignment to
__block variables where the act of initialization/assignment
itself causes the __block variable to be copied to the heap
because the variable is of block type and is being assigned
a block literal which captures the variable.
Douglas Gregor [Thu, 28 Jul 2011 04:45:53 +0000 (04:45 +0000)]
Introduce the "-index-header-map" option, to give special semantics
for quoted header lookup when dealing with not-yet-installed
frameworks. Fixes <rdar://problem/9824020>.
Cut down the number of open/close system calls for output files.
For PCH files, have only one open/close for temporary + rename to be safe from race conditions.
For all other output files open/close the output file directly.
Depends on llvm r136310. rdar://9082880 & http://llvm.org/PR9374.
Chad Rosier [Wed, 27 Jul 2011 23:36:45 +0000 (23:36 +0000)]
The -fapple-kext flag was designed to "do the right thing" for building code for
use in KEXTs. However, users/Xcode still need to tweak the linker flags to do
the right thing, and end up using -Xlinker, for example. Instead, have the
driver "do the right thing" when linking when -fapple-kext is present on the
command line, and we should have Xcode use -fapple-kext instead of setting other
flags like -Xlinker -kext or -nodefaultlibs.
rdar://7809940
John McCall [Wed, 27 Jul 2011 21:50:02 +0000 (21:50 +0000)]
The lock operand to an @synchronized statement is also
supposed to be a full-expression; make it so. In ARC, make sure
we retain the lock for the entire protected block.
Douglas Gregor [Wed, 27 Jul 2011 21:45:57 +0000 (21:45 +0000)]
Switch Sema::UnusedFileScopedDecls over to a LazyVector.
- Added LazyVector::erase() to support this use case.
- Factored out the LazyDecl-of-Decls to RecordData translation in
the ASTWriter. There is still a pile of code duplication here to
eliminate.
Anna Zaks [Wed, 27 Jul 2011 21:43:43 +0000 (21:43 +0000)]
Add a utility function to the Lexer, which makes it easier to find a token after the given location. (It is a generalized version of trans::findLocationAfterSemi from ArcMigrate, which will be changed to use the Lexer utility).
Douglas Gregor [Wed, 27 Jul 2011 20:58:46 +0000 (20:58 +0000)]
Introduce a new data structure, LazyVector, which is a vector whose
contents are lazily loaded on demand from an external source (e.g., an
ExternalASTSource or ExternalSemaSource). The "loaded" entities are
kept separate from the "local" entities, so that the two can grow
independently.
Switch Sema::TentativeDefinitions from a normal vector that is eagerly
populated by the ASTReader into one of these LazyVectors, making the
ASTReader a bit more like me (i.e., lazy).
[arcmt] More automatic transformations and safety improvements; rdar://9615812 :
- Replace calling -zone with 'nil'. -zone is obsolete in ARC.
- Allow removing retain/release on a static global var.
- Fix assertion hit when scanning for name references outside a NSAutoreleasePool scope.
- Automatically add bridged casts for results of objc method calls and when calling CFRetain, for example:
t.m:12:10: error: [rewriter] it is not safe to cast to 'CFStringRef' the result of 'autorelease' message; a __bridge cast may result in a pointer to a destroyed object and a __bridge_retained may leak the object
return (CFStringRef)[[[NSString alloc] init] autorelease];
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
t.m:12:3: note: [rewriter] remove the cast and change return type of function to 'NSString *' to have the object automatically autoreleased
return (CFStringRef)[[[NSString alloc] init] autorelease];
^
- Before changing attributes to weak/unsafe_unretained, check if the backing ivar
is set to a +1 object, in which case use 'strong' instead.
John McCall [Wed, 27 Jul 2011 01:07:15 +0000 (01:07 +0000)]
Clean up the analysis of the collection operand to ObjC
for-in statements; specifically, make sure to close over any
temporaries or cleanups it might require. In ARC, this has
implications for the lifetime of the collection, so emit it
with a retain and release it upon exit from the loop.
In Microsoft mode, if we are within a templated function and we can't resolve Identifier during BuildCXXNestedNameSpecifier, then extend the SS with Identifier. This will have the effect of resolving Identifier during template instantiation. The goal is to be able to resolve a function call whose nested-name-specifier is located inside a dependent base class.
class C {
public:
static void foo2() { }
};
template <class T> class A {
public:
typedef C D;
};
template <class T> class B : public A<T> {
public:
void foo() { D::foo2(); }
};
Note that this won't work if the NestedNameSpecifier refers to a type.
This fixes 1 error when parsing the MSVC 2010 standard headers file with clang.
This patch implements as much of the narrowing conversion error specified by
[dcl.init.list] as is possible without generalized initializer lists or full
constant expression support, and adds a c++0x-compat warning in C++98 mode.
The FixIt currently uses a typedef's basename without qualification, which is
likely to be incorrect on some code. If it's incorrect on too much code, we
should write a function to get the string that refers to a type from a
particular context.
The warning is currently off by default. I'll fix LLVM and clang before turning
it on.
Douglas Gregor [Tue, 26 Jul 2011 23:18:30 +0000 (23:18 +0000)]
Disable the optimization that skips emission of complete, non-virtual
destructors of abstract classes. It's undefined behavior to actually
call the destructor (e.g., via delete), but the presence of code that
calls this destructor doesn't make the program
ill-formed. Fixes <rdar://problem/9819242>.
@interface Foo : NSObject
@property (readonly) id myProp;
@end
@implementation Foo
@synthesize myProp;
@end
t.m:9:13: error: ARC forbids synthesizing a property of an Objective-C object with unspecified storage attribute
@synthesize myProp;
^
which is fine, we want the ownership of the synthesized ivar to be explicit. But we should _not_ emit an error
for the following cases, because we can get the ownership either from the declared ivar or from the property type:
@interface Foo : NSObject {
__weak id _myProp1;
id myProp2;
}
@property (readonly) id myProp1;
@property (readonly) id myProp2;
@property (readonly) __strong id myProp3;
@end
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