Eli Friedman [Mon, 1 Jun 2009 09:24:59 +0000 (09:24 +0000)]
PR4287: allow a variadic prototype to make a subsequent K&R style
definition variadic. I'm not completely sure it's legal, but the
standard can be interpreted as making it legal, and gcc seems to think
it's legal, so I didn't add an extension warning.
Anders Carlsson [Sun, 31 May 2009 20:19:23 +0000 (20:19 +0000)]
Don't try to call getFileCharacteristic if the function declaration has an invalid source location (as is the case for the global allocation functions.
Chris Lattner [Sun, 31 May 2009 19:32:13 +0000 (19:32 +0000)]
Downgrade an error about "return in a no-return function" from being
an error to being a warning that defaults to error. If you want this to
be a warning, you have to explicitly pass -Winvalid-noreturn to clang to
map it back to a warning.
Douglas Gregor [Sun, 31 May 2009 09:31:02 +0000 (09:31 +0000)]
Initial infrastructure for class template partial specialization. Here
we have the basics of declaring and storing class template partial
specializations, matching class template partial specializations at
instantiation time via (limited) template argument deduction, and
using the class template partial specialization's pattern for
instantiation.
This patch is enough to make a simple is_pointer type trait work, but
not much else.
Anders Carlsson [Sat, 30 May 2009 20:36:53 +0000 (20:36 +0000)]
Add Sema::MaybeBindToTemporary which takes an expression and (if needed) wraps it in a CXXBindTemporaryExpr. Use this when creating CXXTemporaryObjectExprs.
Eli Friedman [Sat, 30 May 2009 04:20:30 +0000 (04:20 +0000)]
Expose an API to print a group of decls (like "int a,b;").
Make StmtPrinter use DeclPrinter to print all declarations. Merge
declarations in the limited case of an unnamed TagDecl followed by one
or more declarations using that TagDecl directly. Change
SuppressTypeSpecifiers to the more general SuppressSpecifiers, and
use it to suppress stuff like "typedef" and "extern". Replace
OwnedTag with SuppressTag, since it's more convenient to print
declarations from DeclPrinter at the moment.
improvements to declaration printing. Fix pretty-printing for K&R
function definitions and __builtin_va_arg.
We're now to the point where the pretty-printing output for non-trivial
programs can actually be piped back into clang.
Anders Carlsson [Sat, 30 May 2009 00:52:53 +0000 (00:52 +0000)]
Add a member lookup criteria constructor for searching for overridden virtual member functions. Use this instead of regular name lookup when checking for overriding functions so we will see declarations that would otherwise be hidden. Fixes 6902298.
Douglas Gregor [Sat, 30 May 2009 00:08:05 +0000 (00:08 +0000)]
Refactor and clean up the AST printer, so that it uses a DeclVisitor,
walks through DeclContexts properly, and prints more of the
information available in the AST. The functionality is still available
via -ast-print, -ast-dump, etc., and also via the new member functions
Decl::dump() and Decl::print().
Douglas Gregor [Fri, 29 May 2009 20:38:28 +0000 (20:38 +0000)]
Create a new PrintingPolicy class, which we pass down through the AST
printing logic to help customize the output. For now, we use this
rather than a special flag to suppress the "struct" when printing
"struct X" and to print the Boolean type as "bool" in C++ but "_Bool"
in C.
Douglas Gregor [Fri, 29 May 2009 18:27:38 +0000 (18:27 +0000)]
Reduce the amount of stack space we use in SmallVectors during
template instantiation. This helps reduce our stack footprint when
performing deep template instantiations.
Mike Stump [Fri, 29 May 2009 15:46:01 +0000 (15:46 +0000)]
Fixup the rest of the trivial cases of the codegen of volatile. If
any body can spot codegen bugs with volatile, or knows of any in the
bug database, let me know.
Douglas Gregor [Fri, 29 May 2009 14:25:00 +0000 (14:25 +0000)]
Now that we have declared/defined tag types within DeclGroups,
instantiation of tags local to member functions of class templates
(and, eventually, function templates) works when the tag is defined as
part of the decl-specifier-seq, e.g.,
struct S { T x, y; } s1;
Also, make sure that we don't try to default-initialize a dependent
type.
Douglas Gregor [Thu, 28 May 2009 23:31:59 +0000 (23:31 +0000)]
When we parse a tag specifier, keep track of whether that tag
specifier resulted in the creation of a new TagDecl node, which
happens either when the tag specifier was a definition or when the tag
specifier was the first declaration of that tag type. This information
has several uses, the first of which is implemented in this commit:
1) In C++, one is not allowed to define tag types within a type
specifier (e.g., static_cast<struct S { int x; } *>(0) is
ill-formed) or within the result or parameter types of a
function. We now diagnose this.
2) We can extend DeclGroups to contain information about any tags
that are declared/defined within the declaration specifiers of a
variable, e.g.,
struct Point { int x, y, z; } p;
This will help improve AST printing and template instantiation,
among other things.
3) For C99, we can keep track of whether a tag type is defined
within the type of a parameter, to properly cope with cases like,
e.g.,
int bar(struct T2 { int x; } y) {
struct T2 z;
}
We can also do similar things wherever there is a type specifier,
e.g., to keep track of where the definition of S occurs in this
legal C99 code:
Douglas Gregor [Thu, 28 May 2009 16:34:51 +0000 (16:34 +0000)]
Introduced DeclContext::isDependentContext, which determines whether a
given DeclContext is dependent on type parameters. Use this to
properly determine whether a TagDecl is dependent; previously, we were
missing the case where the TagDecl is a local class of a member
function of a class template (phew!).
Also, make sure that, when we instantiate declarations within a member
function of a class template (or a function template, eventually),
that we add those declarations to the "instantiated locals" map so
that they can be found when instantiating declaration references.
Unfortunately, I was not able to write a useful test for this change,
although the assert() that fires when uncommenting the FIXME'd line in
test/SemaTemplate/instantiate-declref.cpp tells the "experienced user"
that we're now doing the right thing.
Chris Lattner [Thu, 28 May 2009 05:39:39 +0000 (05:39 +0000)]
fix the "pasting formed 'a]', an invalid preprocessing token"
diagnostic to include the full instantiation location for the
invalid paste. For:
#define foo(a, b) a ## b
#define bar(x) foo(x, ])
bar(a)
bar(zdy)
Instead of:
t.c:3:22: error: pasting formed 'a]', an invalid preprocessing token
#define foo(a, b) a ## b
^
t.c:3:22: error: pasting formed 'zdy]', an invalid preprocessing token
we now produce:
t.c:7:1: error: pasting formed 'a]', an invalid preprocessing token
bar(a)
^
t.c:4:16: note: instantiated from:
#define bar(x) foo(x, ])
^
t.c:3:22: note: instantiated from:
#define foo(a, b) a ## b
^
t.c:8:1: error: pasting formed 'zdy]', an invalid preprocessing token
bar(zdy)
^
t.c:4:16: note: instantiated from:
#define bar(x) foo(x, ])
^
t.c:3:22: note: instantiated from:
#define foo(a, b) a ## b
^
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