are not definitions. This follows the behavior of both gcc and earlier
versions of clang. Regression from r156531. <rdar://problem/12048621>.
llvm-svn: 161523
The only caveat is renumbering CXCommentKind enum for aesthetic reasons -- this
breaks libclang binary compatibility, but should not be a problem since API is
so new.
This also fixes PR13372 as a side-effect.
llvm-svn: 161087
as an array of its base class TemplateArgument. Switch the const
TemplateArgument* parameters of InstantiatingTemplate's constructors to
ArrayRef<TemplateArgument> to prevent this from happening again in the future.
llvm-svn: 160245
-ftemplate-depth limit. There are various ways to get an infinite (or merely
huge) stack of substitutions with no intervening instantiations. This is also
consistent with gcc's behavior.
llvm-svn: 159907
* Escaped "::" and "<" as needed in Doxygen comments;
* Marked up code examples with \code...\endcode;
* Documented a \param that is current, instead of a few that aren't;
* Fixed up some \file and \brief comments.
llvm-svn: 158562
* Removed \param comments for parameters that no longer exist;
* Fixed a "\para" typo to "\param";
* Escaped @, # and \ symbols as needed in Doxygen comments;
* Added use of \brief to output short summaries.
llvm-svn: 158498
* Escape #, < and @ symbols where Doxygen would try to interpret them;
* Fix several function param documentation where names had got out of sync;
* Delete param documentation referring to parameters that no longer exist.
llvm-svn: 158472
The integral APSInt value is now stored in a decomposed form and the backing
store for large values is allocated via the ASTContext. This way its not
leaked as TemplateArguments are never destructed when they are allocated in
the ASTContext. Since the integral data is immutable it is now shared between
instances, making copying TemplateArguments a trivial operation.
Currently getting the integral data out of a TemplateArgument requires creating
a new APSInt object. This is cheap when the value is small but can be expensive
if it's not. If this turns out to be an issue a more efficient accessor could
be added.
llvm-svn: 158150
candidate template ignored: substitution failed [with T = int]: no type named 'type' in 'std::enable_if<false, void>'
Instead, just say:
candidate template ignored: disabled by 'enable_if' [with T = int]
... and point at the enable_if condition which (we assume) failed.
This is applied to all cases where the user writes 'typename enable_if<...>::type' (optionally prefixed with a nested name specifier), and 'enable_if<...>' names a complete class type which does not have a member named 'type', and this results in a candidate function being ignored in a SFINAE context. Thus it catches 'std::enable_if', 'std::__1::enable_if', 'boost::enable_if' and 'llvm::enable_if'.
llvm-svn: 156463
Sema::ConvertToIntegralOrEnumerationType() from PartialDiagnostics to
abstract "diagnoser" classes. Not much of a win here, but we're
-several PartialDiagnostics.
llvm-svn: 156217
[basic.lookup.classref]p1 and p4, which concerns name lookup for
nested-name-specifiers and template names, respectively, in a member
access expression. C++98/03 forces us to look both in the scope of the
object and in the current scope, then compare the results. C++11 just
takes the result from the scope of the object, if something is
found. Fixes <rdar://problem/11328502>.
llvm-svn: 155935
pretend there was no previous declaration -- that can lead us to injecting
a class template (with no access specifier) into a class scope. Instead,
just avoid the problematic checks.
llvm-svn: 155303
up an elaborated type specifier in a friend declaration, only look for type
declarations, per [basic.lookup.elab]p2. If we know that the redeclaration
lookup for a friend class template in a dependent context finds a non-template,
don't delay the diagnostic to instantiation time.
llvm-svn: 155187
the nested-name-specifier (e.g., because it is dependent), do not
error even though we can't represent it in the AST at this point.
This is a horrible, horrible hack. The actual feature we still need to
implement (for C++98!) is covered by PR12292. However, we used to
silently accept this code, so when we recently started rejecting it we
caused some regressions (e.g., <rdar://problem/11147355>). This hack
brings us back to the passable-but-not-good state we had previously.
llvm-svn: 153752
concerning qualified declarator-ids. We now diagnose extraneous
qualification at namespace scope (which we had previously missed) and
diagnose these qualification errors for all kinds of declarations; it
was rather uneven before. Fixes <rdar://problem/11135644>.
llvm-svn: 153577
The deferred lookup table building step couldn't accurately tell which Decls
should be included in the lookup table, and consequently built different tables
in some cases.
Fix this by removing lazy building of DeclContext name lookup tables. In
practice, the laziness was frequently not worthwhile in C++, because we
performed lookup into most DeclContexts. In C, it had a bit more value,
since there is no qualified lookup.
In the place of lazy lookup table building, we simply don't build lookup tables
for function DeclContexts at all. Such name lookup tables are not useful, since
they don't capture the scoping information required to correctly perform name
lookup in a function scope.
The resulting performance delta is within the noise on my testing, but appears
to be a very slight win for C++ and a very slight loss for C. The C performance
can probably be recovered (if it is a measurable problem) by avoiding building
the lookup table for the translation unit.
llvm-svn: 152608
access expression is the start of a template-id, ignore function
templates found in the context of the entire postfix-expression. Fixes
PR11856.
llvm-svn: 152520
- getSourceRange().getBegin() is about as awesome a pattern as .copy().size().
I already killed the hot paths so this doesn't seem to impact performance on my
tests-of-the-day, but it is a much more sensible (and shorter) pattern.
llvm-svn: 152419
* Handle some situations where we should never make a decl more visible,
even when merging in an explicit visibility.
* Handle attributes in members of classes that are explicitly specialized.
Thanks Nico for the report and testing, Eric for the initial review, and dgregor
for the awesome test27 :-)
llvm-svn: 151236
explicit specialization of a function template, mark the instantiation as
constexpr if the specialization is, rather than requiring them to match.
llvm-svn: 151001
expressions. This is mostly a simple refact, splitting the main "start
a lambda expression" function into smaller chunks that are driven
either from the parser (Sema::ActOnLambdaExpr) or during AST
transformation (TreeTransform::TransformLambdaExpr). A few minor
interesting points:
- Added new entry points for TreeTransform, so that we can
explicitly establish the link between the lambda closure type in the
template and the lambda closure type in the instantiation.
- Added a bit into LambdaExpr specifying whether it had an explicit
result type or not. We should have had this anyway.
This code is 'lightly' tested.
llvm-svn: 150417
The new info is propagated to TSTLoc on template instantiation, getting rid of 3 FIXMEs in TreeTransform.h and another one Parser.cpp.
Simplified code in TypeSpecLocFiller visitor methods for DTSTLoc and DependentNameTypeLoc by removing what now seems to be dead code (adding corresponding assertions).
llvm-svn: 149923
value of class type, look for a unique conversion operator converting to
integral or unscoped enumeration type and use that. Implements [expr.const]p5.
Sema::VerifyIntegerConstantExpression now performs the conversion and returns
the converted result. Some important callers of Expr::isIntegralConstantExpr
have been switched over to using it (including all of those required for C++11
conformance); this switch brings a side-benefit of improved diagnostics and, in
several cases, simpler code. However, some language extensions and attributes
have not been moved across and will not perform implicit conversions on
constant expressions of literal class type where an ICE is required.
In passing, fix static_assert to perform a contextual conversion to bool on its
argument.
llvm-svn: 149776
template without a corresponding parameter pack, don't immediately
substitute the alias template. This is under discussion in the C++
committee, and may become ill-formed, but for now we match GCC.
llvm-svn: 149697
template. Such pack expansions can easily fail at template
instantiation time, if the expanded parameter packs are of the wrong
length. Fixes <rdar://problem/10040867>, PR9021, and the example that
came up today at Going Native.
llvm-svn: 149685
