Sean Hunt [Mon, 23 May 2011 21:07:59 +0000 (21:07 +0000)]
Correctly propagate defaultedness across template instantiation. This
fixes PR9965, but we're not out of the water yet, as we do not
successfully handle out-of-line definitions, due to my utter
misunderstanding of how we manage templates.
Francois Pichet [Mon, 23 May 2011 03:43:44 +0000 (03:43 +0000)]
Emulate a MSVC bug where if during an using declaration name lookup, the declaration found is unaccessible (private) and that declaration was bring into scope via another using declaration whose target declaration is accessible (public) then no error is generated.
Example:
class A { public: int f(); };
class B : public A { private: using A::f; };
class C : public B { private: using B::f; };
Here, B::f is private so this should fail in Standard C++, but because B::f refers to A::f which is public MSVC accepts it.
This fixes 1 error when parsing MFC code with clang.
Chris Lattner [Sun, 22 May 2011 23:35:00 +0000 (23:35 +0000)]
make the x86-32 backend specify a byval alignment, even when the
code generator will do it. With this patch, clang compiles the example
in PR9794 to not have an alloca temporary.
Chris Lattner [Sun, 22 May 2011 23:21:23 +0000 (23:21 +0000)]
Fix x86-64 byval passing to specify the alignment even when the code
generator will give it something sufficient. This is important because
the mid-level optimizer doesn't know what alignment is required otherwise.
Chris Lattner [Sun, 22 May 2011 22:10:16 +0000 (22:10 +0000)]
Invoke the FileChanged callback before pushing the linemarker for a system
header. Getting it in the wrong order generated incorrect line markers in -E
mode. In the testcase from PR9861 we used to generate:
Douglas Gregor [Sun, 22 May 2011 00:21:10 +0000 (00:21 +0000)]
Add an assertion to tell us when we're going off the deep end trying
to determine outer template arguments lists for template
parameters. This is actually the problem behind PR9643, which I have
yet to figure out how to fix.
Douglas Gregor [Sat, 21 May 2011 23:15:46 +0000 (23:15 +0000)]
Audit and finish the implementation of C++0x nullptr, fixing two
minor issues along the way:
- Non-type template parameters of type 'std::nullptr_t' were not
permitted.
- We didn't properly introduce built-in operators for nullptr ==,
!=, <, <=, >=, or > as candidate functions .
To my knowledge, there's only one (minor but annoying) part of nullptr
that hasn't been implemented: catching a thrown 'nullptr' as a pointer
or pointer-to-member, per C++0x [except.handle]p4.
Douglas Gregor [Sat, 21 May 2011 22:16:50 +0000 (22:16 +0000)]
It's considered poor form to create references to the overloaded
function type. Educate template argument deduction thusly, fixing
PR9974 / <rdar://problem/9479155>.
Douglas Gregor [Sat, 21 May 2011 19:26:31 +0000 (19:26 +0000)]
Fix our handling of the warning when one tries to pass a
non-POD/non-trivial object throuugh a C-style varargs. The warning
itself was default-mapped to error, but can be downgraded, but we were
treating it in Sema like a hard error, silently dropping the call.
Instead, treat this problem like a warning, and do what the warning
says we do: abort at runtime. To do so, we fake up a __builtin_trap()
expression that gets evaluated as part of the argument.
Douglas Gregor [Sat, 21 May 2011 17:52:48 +0000 (17:52 +0000)]
Teach Sema::ActOnUninitializedDecl() not to try to interpret when one
should use a constructor to default-initialize a
variable. InitializationSequence knows the rules for default
initialization, better. Fixes <rdar://problem/8501008>.
Douglas Gregor [Sat, 21 May 2011 17:07:29 +0000 (17:07 +0000)]
Introduce the -fdiagnostics-format=xxx option to control how Clang
prints the file, line, and column of a diagnostic. We currently
support Clang's normal format, MSVC, and Vi formats.
Note that we no longer change the diagnostic format based on
-fms-extensions.
Douglas Gregor [Fri, 20 May 2011 16:38:50 +0000 (16:38 +0000)]
Introduce Type::isSignedIntegerOrEnumerationType() and
Type::isUnsignedIntegerOrEnumerationType(), which are like
Type::isSignedIntegerType() and Type::isUnsignedIntegerType() but also
consider the underlying type of a C++0x scoped enumeration type.
Audited all callers to the existing functions, switching those that
need to also handle scoped enumeration types (e.g., those that deal
with constant values) over to the new functions. Fixes PR9923 /
<rdar://problem/9447851>.
Douglas Gregor [Fri, 20 May 2011 15:48:31 +0000 (15:48 +0000)]
Downgrade the error about re-opening an inline namespace as non-inline
to a warning, since apparently libstdc++'s debug mode does this (and
we can recover safely). Add a Fix-It to insert the "inline", just for kicks.
Douglas Gregor [Fri, 20 May 2011 15:32:55 +0000 (15:32 +0000)]
Diagnose unexpanded parameter packs in return statements. This
manifested in a crash with blocks in PR9953, but it was a ticking time
bomb for normal functions, too. Fixes PR9953.
Sebastian Redl [Thu, 19 May 2011 05:13:44 +0000 (05:13 +0000)]
Reapply r121528, fixing PR9941 by delaying the exception specification check for destructors until the class is complete and destructors have been adjusted.
Sean Hunt [Wed, 18 May 2011 03:41:58 +0000 (03:41 +0000)]
Implement an additional fix for infinite recursion of deleted special
member functions by making sure that they're on the record before
checking for deletion.
Also make sure source locations are valid to avoid crashes.
Unfortunately, the declare-all-implicit-members approach is still
required in order to ensure that dependency loops do not result in
incorrectly deleting functions (since they are to be deleted at the
declaration point per the standard).
Sean Hunt [Wed, 18 May 2011 01:06:45 +0000 (01:06 +0000)]
Force declaration of implicit members in C++0x mode.
I hear at least one person crying out in anguish, but it's unfortunately
necessary to avoid infinite loops with mutually dependent constructors
trying to call each other and determine if they are deleted.
It might be possible to go back to the old behavior if we can implement
part-of-file lookups efficiently, or if a solution is discovered by
which we can safely detect and avoid infinite recusion.
1. We would assume that the length of the string literal token was at least 2
2. We would allocate a buffer with size length-2
And when the stars aligned (one of which would be an invalid source location due to stale PCH)
The length would be 0 and we would try to allocate a 4GB buffer.
Add checks for this corner case and a bunch of asserts.
(We really really should have had an assert for 1.).
Note that there's no test case since I couldn't get one (it was major PITA to reproduce),
maybe later.
John McCall [Tue, 17 May 2011 21:05:49 +0000 (21:05 +0000)]
Revert r131434, my commit disabling the complete-object constructor
optimization for abstract classes; there was a misunderstanding, and
it turns out that there are no kexts which rely on this.
Sean Hunt [Tue, 17 May 2011 20:44:39 +0000 (20:44 +0000)]
Add some more tests.
I have on that's #if 0'ed out, and I don't know why it's failing to
delete the constructor. I'd appreciate if someone familiar with access
control could look into ShouldDeleteDefaultConstructor - thanks.
Make the triple an explicit argument of FindTargetProgramPath.
Preserve the original triple in the NetBSD toolchain when using -m32 or
-m64 and the resulting effective target is different from the triple it
started with. This allows -m32 to use the same assembler/linking in
cross-compiling mode and avoids confusion about passing down target
specific flags in that case like --32.
Anders Carlsson [Mon, 16 May 2011 04:08:36 +0000 (04:08 +0000)]
Fix another regression from the "skip vtable pointer initialization"
optimization. Make sure to require a vtable when trying to get the address
of a VTT, otherwise we would never end up emitting the VTT.
John McCall [Sun, 15 May 2011 17:49:20 +0000 (17:49 +0000)]
Add a method for checking whether a function is one of the reserved global
placement allocation or deallocation functions. These functions cannot be
replaced by the user and are exempt from the normal requirements on
allocation functions (e.g. that they must return unaliased memory).
Douglas Gregor [Sun, 15 May 2011 17:27:27 +0000 (17:27 +0000)]
When checking a set of template parameter lists against a
nested-name-specifier, re-evaluate the nested-name-specifier as if we
were entering that context (which we did!), so that we'll resolve a
template-id to a particular class template partial
specialization. Fixes PR9913.
John McCall [Sun, 15 May 2011 07:14:44 +0000 (07:14 +0000)]
The array-size operand to a new-expression is not necessarily a size_t.
It can be larger, it can be smaller, it can be signed, whatever. Handle
all the crazy cases with grace and spirit.
John McCall [Sun, 15 May 2011 01:53:33 +0000 (01:53 +0000)]
Use arrays and SmallVectors instead of std::vectors when building function
types. Also, cache a translation of 'void' in CGM and provide a ptrdiff_t
alias. No functionality change.
Fix generation of obj-c @encoding for members with zero size.
Also follow gcc in that arrays of elements with zero size are encoded as arrays with zero elements.
Anders Carlsson [Sat, 14 May 2011 23:26:09 +0000 (23:26 +0000)]
When emitting the destructor for a class with a vtable, if we can determine
that the destructor body is trivial and that all member variables also have either
trivial destructors or trivial destructor bodies, we don't need to initialize the
vtable pointers since no virtual member functions will be called on the destructor.
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