Richard Smith [Mon, 30 Apr 2012 23:33:33 +0000 (23:33 +0000)]
Remove -Wc++98-compat warning for an outrageously-rare circumstance of 'this'
being used in an exception specification in a way which isn't otherwise
ill-formed in C++98: this warning also incorrectly triggered on uses of 'this'
inside thread-safety attributes, and the mechanism required to tell these cases
apart is more complex than can be justified by the (minimal) value of this part
of -Wc++98-compat.
When going through references to check if the function returns the address
of a local variable, make sure we don't infinitely recurse when the
reference binds to itself.
e.g:
int* func() {
int& i = i; // assign non-exist variable to a reference which has same name.
return &i; // return pointer
}
modern objective-c translator. named aggregate types
defined inside the objc class belong to class's
decl. scope. This is to conform to objective-c
rules. // rdar://11351299
Store the source range of a CXXOperatorCallExpr in the Expr object instead of
calculating it recursively.
boost::assign::tuple_list_of uses the trick of chaining call operator expressions in order to declare a "list of tuples", e.g:
std::vector<tuple> v = boost::assign::tuple_list_of(1, "foo")(2, "bar")(3, "qqq");
Due to CXXOperatorCallExpr calculating its source range recursively we would get
significant slowdowns with a large number of chained call operator expressions and the
potential for stack overflow.
David Blaikie [Mon, 30 Apr 2012 18:21:31 +0000 (18:21 +0000)]
Fix PR12378: provide conversion warnings on default args of function templates
Apparently we weren't checking default arguments when they were instantiated.
This adds the check, fixes the lack of instantiation caching (which seems like
it was mostly implemented but just missed the last step), and avoids
implementing non-dependent default args (for non-dependent parameter types) as
uninstantiated default arguments (so that we don't warn once for every
instantiation when it's not instantiation dependent).
Douglas Gregor [Mon, 30 Apr 2012 16:20:27 +0000 (16:20 +0000)]
Restore paren, bracket and brace counts in parser when
TentativeParsingAction is reverted, from Pasi Parviainen! Fixes
PR12480 / <rdar://problem/11341251>.
David Blaikie [Mon, 30 Apr 2012 02:36:29 +0000 (02:36 +0000)]
Remove the ref/value inconsistency in filter_decl_iterator.
filter_decl_iterator had a weird mismatch where both op* and op-> returned T*
making it difficult to generalize this filtering behavior into a reusable
library of any kind.
This change errs on the side of value, making op-> return T* and op* return
T&.
Richard Smith [Mon, 30 Apr 2012 00:16:51 +0000 (00:16 +0000)]
PR11926 + duplicates: Fix crash in -Wuninitialized when using a compiler like
g++4.7, which reuses stack space allocated for temporaries. CFGElement::getAs
returns a suitably-cast version of 'this'. Patch by Markus Trippelsdorf!
No test: this code has the same observable behavior as the old code when built
with most compilers, and the tests were already failing when built with a
compiler for which this produced a broken binary.
Richard Smith [Sun, 29 Apr 2012 07:31:09 +0000 (07:31 +0000)]
PR12688: ParseCXXClassMemberDeclaration's sometimes-null ThisDecl takes another
victim. Don't crash if we have a delay-parsed exception specification for a
class member which is invalid in a way which precludes building a FunctionDecl.
Richard Smith [Sun, 29 Apr 2012 06:32:34 +0000 (06:32 +0000)]
[class.copy]p23: Fix an assertion caused by incorrect argument numbering in a
diagnostic, add a test for this paragraph, and tighten up the diagnostic wording
a little.
Chris Lattner [Sat, 28 Apr 2012 16:12:17 +0000 (16:12 +0000)]
switch some uses of ExpectAndConsume(tok::semi to use ExpectAndConsumeSemi. This allows
us to improve this diagnostic (telling us to insert another ")":
t.c:2:19: error: expected ';' at end of declaration
int x = 4+(5-12));
^
;
to:
t.c:2:19: error: extraneous ')' before ';'
int x = 4+(5-12));
^
...telling us to remove the ")". This is PR12595. There are more uses of ExpectAndConsumeSemi
that could be switched over, but I don't hit them on a daily basis :)
Benjamin Kramer [Sat, 28 Apr 2012 10:00:42 +0000 (10:00 +0000)]
Rename isPODType (using the C++98 rules) into isCXX98PODType and make isPODType decide which one to use based on LangOptions.
- -Wc++98-compat depends on the c++98 definition
- Now __is_pod returns the right thing in c++11 and c++98 mode
- All changes to the type traits test are validated against g++ 4.7
objective-c modern translator: Correctly translate
nonfragile ivar access code when ivar type is a
locally defined struct/union type. // rdar://11323187
Douglas Gregor [Fri, 27 Apr 2012 22:30:01 +0000 (22:30 +0000)]
When @encode'ing a C++ class that has empty base classes, we can end
up with gaps when the class inherits from the same empty base class
more than once. Fixes <rdar://problem/11324167>.
Chad Rosier [Fri, 27 Apr 2012 19:51:11 +0000 (19:51 +0000)]
[driver] Don't try to set the deployment target when there is no bound
architecture; this was happening for tools such as lipo and dsymutil.
Also, if no -arch option has been specified, set the architecture based
on the TC default.
rdar://11329656
Richard Smith [Fri, 27 Apr 2012 19:33:05 +0000 (19:33 +0000)]
PR12224 (sort of): Diagnose inheriting constructor declarations in C++11 mode.
We do not support IRGen for these, and get some parts of the semantic analysis
wrong.
Change FunctionSummary.h's definition of SetOfDecls to be an ImmutableList instead
of a mutable SmallPtrSet. While iterating over LocalTUDecls, there were cases
where we could modify LocalTUDecls, which could result in invalidating an iterator
and an analyzer crash. Along the way, switch some uses of std::queue to std::dequeue,
which should be slightly more efficient.
Unfortunately, this is a difficult case to create a test case for.
Add note to help explain why a tag such as 'struct' is needed to refer
to a given type, when the reason is that there is a non-type decl with
the same name.
John McCall [Thu, 26 Apr 2012 21:14:42 +0000 (21:14 +0000)]
Fix a bug with block layout when the block contains something
more aligned than the block header but also contains something
smaller than the block-header alignment but not exactly half
the difference between the large alignment and the header
alignment. Got that?
I'm really not sure what I was thinking with the buggy computation
here, but the fix is pretty obvious.
[PCH] In ASTReader::completeVisibleDeclsMap, after we loaded all visible decls, mark
the declaration context as not having external visible storage any more.
This should improve performance as we won't needlessly reload the visible decls multiple times
and seems to fix the i386 crash in rdar://11327522.
Teach RetainCountChecker that it doesn't quite understand pthread_setspecific and it should just give up when it sees it. Fixes <rdar://problem/11282706>.
Fix a long-standing bug where Clang had a different default from GCC on
Linux and other (non-Darwin) platforms and have it use -fmath-errno by
default (for better or worse).
Darwin has seen the light here and uses -fno-math-errno by default, this
patch preserves that.
If any maintainers for a non-Linux platform would also like to opt-in to
-fno-math-errno by default, I'm happy to add folks, but we're currently
getting buts and misleading comparisons with GCC due to this difference
in behavior on Linux at least.
Richard Smith [Wed, 25 Apr 2012 22:57:25 +0000 (22:57 +0000)]
RecursiveASTVisitor: When in 'shouldVisitTemplateInstantiations' mode, visit
all instantiations of a template when we visit the canonical declaration of the
primary template, rather than trying to match them up to the partial
specialization from which they are instantiated. This fixes a bug where we
failed to visit instantiations of partial specializations of member templates of
class templates, and naturally extends to allow us to visit instantiations where
we have instantiated only a declaration.
Add an error message with fixit hint for changing '.' to '->'.
This is mainly for attempting to recover in cases where a class provides
a custom operator-> and a '.' was accidentally used instead of '->' when
accessing a member of the object returned by the current object's
operator->.
Richard Smith [Wed, 25 Apr 2012 18:28:49 +0000 (18:28 +0000)]
PR12625: Cope with classes which have incomplete base or member types:
Don't try to query whether an incomplete type has a trivial copy constructor
when determining whether a move constructor should be declared.
That depends however on either mingw or msvc being installed, and
chapuni tells me there might be issues with float.h on mingw, so
no automated test is added.
projects / clang / log