Thread Safety: In C++0x Mutexes are the objects that control access to shared variables, while Locks are the objects that acquire and release Mutexes. We switch to this new terminology.
The frexp, modf, and remquo builtins are not 'const'.
These functions return a second value by writing to a pointer argument,
so they cannot be marked 'readnone' which implies that they don't access
memory.
Douglas Gregor [Thu, 8 Sep 2011 17:18:35 +0000 (17:18 +0000)]
Allow C++0x enumerations with a fixed underlying type in
Objective-C. The @encode'ing of such an enumeration type is the same
as its underlying type. <rdar://problem/5276348>.
Douglas Gregor [Thu, 8 Sep 2011 01:46:34 +0000 (01:46 +0000)]
Implement the Objective-C 'instancetype' type, which is an alias of
'id' that can be used (only!) via a contextual keyword as the result
type of an Objective-C message send. 'instancetype' then gives the
method a related result type, which we have already been inferring for
a variety of methods (new, alloc, init, self, retain). Addresses
<rdar://problem/9267640>.
Chad Rosier [Thu, 8 Sep 2011 00:38:00 +0000 (00:38 +0000)]
[driver] i386 kext preprocessor jobs also need their unsupported options
filtered. This happenis when -save-temps is specified.
<rdar://problem/10088387>
Douglas Gregor [Wed, 7 Sep 2011 23:11:54 +0000 (23:11 +0000)]
Optimize the preprocessor's handling of the __import_module__
keyword. We now handle this keyword in HandleIdentifier, making a note
for ourselves when we've seen the __import_module__ keyword so that
the next lexed token can trigger a module import (if needed). This
greatly simplifies Preprocessor::Lex(), and completely erases the 5.5%
-Eonly slowdown Argiris noted when I originally implemented
__import_module__. Big thanks to Argiris for noting that horrible
regression!
Richard Trieu [Wed, 7 Sep 2011 21:46:33 +0000 (21:46 +0000)]
Change diagnoseAddressOfInvalidType() to use an enum to determine what error message to display. Also, move the function call into on location instead of having it spread among many places in the if/else statements.
Douglas Gregor [Wed, 7 Sep 2011 20:36:12 +0000 (20:36 +0000)]
When parsing a function-try-block that does not have a
ctor-initializer, remember to call the Sema action to generate default
ctor-initializers. What a delightful little miscompile. Fixes PR10578
/ <rdar://problem/9877267>.
Extract the emission of the diagnostic's location into a separate
function. This is really the beginning of the second phase of
refactorings here. The end goal is to have (roughly) three interfaces:
1) Base class to format a single diagnostic suitable for display on the
console.
2) Extension of the base class which also displays a caret diagnostic
suitable for display on the console.
3) An adaptor that implements the DiagnosticClient by delegating to #1
and/or #2 as appropriate.
Once we have these, things like libclang's formatDiagnostic can use #1
and #2 to provide really well formatted (and consistently formatted!)
textual formatting of diagnostics.
Getting there is going to be quite a bit of shuffling. I'm basically
sketching out where the interface boundaries can be drawn for #1 and #2
within the existing classes. That lets me shuffle with a minimum of fuss
and delta. Once that's done, and any of the related interfaces that need
to change are updated, I'll hoist these into separate headers and
re-implement libclang in terms of their interfaces. Long WIP, but
comments at each step welcome. =D
Move the HilightRange method from TextDiagnosticPrinter down to
CaretDiagnostic. It's completely generic, with nothing to do with the
diagnostic client or info APIs.
Switch the CharSourceRange array to a small vector. The array was
a stack array of a magical size with an assert() that we never
overflowed it. That seems incredibly risky. We also have a very nice API
for bundling up a vector we expect to usually have a small size without
loss of functionality or security if the size is excessive.
The fallout is to remove the last pointer+size parameter pair that are
traced through the recursive caret diagnostic emission.
Eli Friedman [Wed, 7 Sep 2011 01:41:24 +0000 (01:41 +0000)]
Switch clang over to using fence/atomicrmw/cmpxchg instead of the intrinsics (which will go away). LLVM CodeGen does almost exactly the same thing with these and the old intrinsics, so I'm reasonably confident this will not break anything.
There are still a few issues which need to be resolved with code generation for atomic load and store, so I'm not converting the places which need those for now.
I'm not entirely sure what to do about __builtin_llvm_memory_barrier: the fence instruction doesn't expose all the possibilities which can be expressed by __builtin_llvm_memory_barrier. I would appreciate hearing from anyone who is using this intrinsic.
Richard Trieu [Wed, 7 Sep 2011 00:58:53 +0000 (00:58 +0000)]
Change the self-reference visitor (which gives the warning for self-reference oninitalization warning of -Wuninitialized) to exclude member variables that can decay into pointers. This will cause it to no longer warn on this code:
In Microsoft mode, if we are inside a template class member function and we can't resolve a function call then create a type-dependent CallExpr even if the function has no type dependent arguments. The goal is to postpone name lookup to instantiation time to be able to search into type dependent base classes.
With this patch in, clang will generate only 37 errors (down from 212) when parsing a typical MFC source file.
Use ArrayRef for the fixit hint array rather than a pointer and a size.
Clean up loops over the hints to use the more idiomatic iterator form in
LLVM and Clang.
Hoist the construction of the FixItHint line into a member function with
a defined interface. This isn't as nice as the previous one, but should
get better as I push through better data types in all these functions.
Also, I'm hoping to pull some aspects of this out into a common routine
(such as tab expansion).
Again, WIP, comments welcome as I'm going through.
Douglas Gregor [Tue, 6 Sep 2011 21:41:04 +0000 (21:41 +0000)]
When extracting the callee declaration from a call expression, be sure
to look through SubstNonTypeTemplateParmExprs. Then, update the IR
generation of CallExprs to actually use CallExpr::getCalleeDecl()
rather than attempting to mimick its behavior (badly).
Eli Friedman [Tue, 6 Sep 2011 18:53:03 +0000 (18:53 +0000)]
Rearrange code so that we pass the right pointer to delete[] when an exception is thrown constructing the array elements in an array new expression. Fixes PR10870.
Richard Smith [Tue, 6 Sep 2011 18:03:41 +0000 (18:03 +0000)]
Advertise support for cxx_range_for as an extension in C++98 mode. Patch by Jean-Daniel Dupas!
Also provide a modicum of test coverage for ranged for in C++98.
Douglas Gregor [Tue, 6 Sep 2011 16:38:46 +0000 (16:38 +0000)]
Finish implementing (de-)serialization of the CXXDefinitionData bits
needed for implicit move constructors and move assignment
operators. Fixes PR10847.
Douglas Gregor [Tue, 6 Sep 2011 16:26:56 +0000 (16:26 +0000)]
When performing a derived-to-base cast on the right-hand side of the
synthesized move assignment within an implicitly-defined move
assignment operator, be sure to treat the derived-to-base cast as an
xvalue (rather than an lvalue). Otherwise, we'll end up getting the
wrong constructor.
Optimize a direct call to a trivial move assignment operator to an
aggregate copy, as we do for trivial copy assignment operators, and
update the the assertion in CodeGenFunction::EmitAggregateCopy() to
cope with this optimization.
Add the resource directory to the search path for Driver::GetFilePath,
as well as the search path printed by -print-search-dirs.
The main purpose of this change is to cause -print-file-name=include
to print the path to the include directory under Clang's resource
directory, instead of the system compiler's include directory, whose
header files Clang may not be able to parse. Some build scripts will
do something like:
$(CC) -nostdinc -I`$(CC) -print-file-name=include`
to exclude all header paths except the compiler's.
Enable -Wdangling-fields by default in Clang. I've run this warning over
a very large chunk of code and found zero false positives. I've only
found a few bugs, but that likely is because bugs of this nature
actually do manifest. We've also identified several bugs that were
caught by Valgrind, but would have been caught faster and more easily
with this warning.
If anyone has concerns, or this causes fallout on any build bots, lemme
know. I'm happy to just put it under -Wmost.
Richard Smith [Mon, 5 Sep 2011 02:13:09 +0000 (02:13 +0000)]
Implement the suggested resolution of WG21 N3307 issue 19: When determining whether a class is an aggregate in C++0x, treat all functions which are neither deleted nor defaulted as user-provided, not just special member functions. The wording of the standard only defines the term "user-provided" for special member functions, but the intent seems to be that any function can be user-provided.
Pass 0 instead of a empty TemplateArgumentListInfo when creating a CXXDependentScopeMemberExpr to handle a "this->" fixit (lookup into dependent bases of class template)
Otherwise the fixit doesn't really work for subsequent lookup.
Richard Smith [Sun, 4 Sep 2011 19:54:14 +0000 (19:54 +0000)]
PR10458: Finesse behaviour of C++0x features when in pre-0x mode. Accept for-range and auto with an ExtWarn, and produce a -Wc++0x-compat warning in C++98 mode when auto is used as a storage class.
Sebastian Redl [Sun, 4 Sep 2011 18:14:28 +0000 (18:14 +0000)]
Add test case for defaulted copy and move structure validation.
Fix bug this uncovered.
Address minor comments from Doug.
Enable cxx_implicit_moves feature.
Support code-completion for C++ inline methods and ObjC buffering methods.
Previously we would cut off the source file buffer at the code-completion
point; this impeded code-completion inside C++ inline methods and,
recently, with buffering ObjC methods.
Have the code-completion inserted into the source buffer so that it can
be buffered along with a method body. When we actually hit the code-completion
point the cut-off lexing or parsing.
Fix Lexer::ComputePreamble when MaxLines parameter is non-zero.
The function was only counting lines that included tokens and not empty lines,
but MaxLines (mainly initiated to the line where the code-completion point resides)
is a count of overall lines (even empty ones).
Add a simple new warning to catch blatantly dangling pointer and
reference members of classes. We've had several bugs reported because of
this, and there's no reason not to flag it right away in the compiler.
Comments especially welcome on the strategy for implementing this
warning (IE, what should trigger this?) and on the text of the warning
itself.
I'm going to extend this to cover obvious cases with temporaries and
beef up the test cases some in subsequent patches. I'll then run it over
a large codebase and make sure its not misbehaving before I add it to
-Wall or turn it on by default. I think this one might be a good
candidate for on by default.
projects / clang / log