int x = 42;
x = x; // Warns here.
The warning avoids macro expansions, templates, user-defined assignment
operators, and volatile types, so false positives are expected to be low.
The common (mis-)use of this code pattern is to silence unused variable
warnings, but a more idiomatic way of doing that is '(void)x;'.
A follow-up to this will add a note and fix-it hint suggesting this
replacement in cases where the StmtExpr consists precisely of the self
assignment.
llvm-svn: 122804
declaration name of the array when present. This ensures that
a poor-man's C++03 static_assert will include the user error message
often embedded in the name.
Update all the tests to reflect the new wording, and add a test for the
name behavior.
llvm-svn: 122802
When we are in code-completion mode, skip parsing of all function bodies except the one where the
code-completion point resides.
For big .cpp files like 'SemaExpr.cpp' the improvement makes a huge difference, in some cases cutting down
code-completion time -62% !
We don't get diagnostics for the bodies though, so modify the code-completion tests that check for errors.
See rdar://8814203.
llvm-svn: 122765
(transforming each in turn) into calls into one central routine
(TransformExprs) that transforms a list of expressions. This
refactoring is preparatory work for pack expansions whose in an
expression-list.
No functionality change.
llvm-svn: 122761
template argument (described by an expression, of course). For
example:
template<int...> struct int_tuple { };
template<int ...Values>
struct square {
typedef int_tuple<(Values*Values)...> type;
};
It also lays the foundation for pack expansions in an initializer-list.
llvm-svn: 122751
don't have access to (e.g., fprintf, which needs the library type
FILE), fail with a warning and forget about the builtin
entirely. Previously, we would actually provide an error, which breaks
autoconf's super-lame checks for fprintf, longjmp, etc. Fixes PR8316.
llvm-svn: 122744
16-bits in size. Implement this by splitting WChar into two enums, like we have
for char. This fixes a miscompmilation of XULRunner, PR8856.
llvm-svn: 122558
SimpleSValBuilder. This clears up some
false positives emitted by ArrayBoundCheckerV2
due to the lack of support for pointer arithmetic.
llvm-svn: 122546
packs, e.g.,
template<typename T, unsigned ...Dims> struct multi_array;
along with semantic analysis support for finding unexpanded non-type
template parameter packs in types, expressions, and so on.
Template instantiation involving non-type template parameter packs
probably doesn't work yet. That'll come soon.
llvm-svn: 122527
parameter packs (C++0x [dcl.fct]p13), including disambiguation between
unnamed function parameter packs and varargs (C++0x [dcl.fct]p14) for
cases like
void f(T...)
where T may or may not contain unexpanded parameter packs.
llvm-svn: 122520
to allow us to explicitly control whether or
not Objective-C properties are default synthesized.
Currently this feature only works when using
the -fobjc-non-fragile-abi2 flag (so there is
no functionality change), but we can now turn
off this feature without turning off all the features
coupled with -fobjc-non-fragile-abi2.
llvm-svn: 122519
layout. :)
Rename the 'EntoSA' directories to 'StaticAnalyzer'.
Internally we will still use the 'ento' namespace
for the analyzer engine (unless there are further
sabre rattlings...).
llvm-svn: 122514
specialization's template arguments against the primary template's
template arguments using the obvious, correct method of checking the
injected-class-name type (C++ [temp.class.spec]p9b3). The previous
incarnation of this comparison attempted to use its own formulation of
the injected-class-name, which is redudant and, with the introduction
of variadic templates, became wrong (again).
llvm-svn: 122508
new gcc warning that complains on self-assignments and
self-initializations. Fix one bug found by the warning, in which one
clang::OverloadCandidate constructor failed to initialize its
FunctionTemplate member.
llvm-svn: 122459
single routine. Extend that routine to handle consistency
checking for template argument packs, so that we can compare the
deduced packs for template parameter packs across different pack
expansions.
llvm-svn: 122452
pattern is a template argument, which involves repeatedly deducing
template arguments using the pattern of the pack expansion, then
bundling the resulting deductions into an argument pack.
We can now handle a variety of simple list-handling metaprograms using
variadic templates. See, e.g., the new "count" metaprogram.
llvm-svn: 122439
deduction. Unify all of the looping over template arguments for
deduction purposes into a single place, where argument pack expansion
occurs; this is also the hook for deducing from pack expansions, which
itself is not yet implemented.
For now, at least we can handle a basic "count" metafunction written
with variadics. See the new test for the formulation that works.
llvm-svn: 122418
Previously designated anonymous fields were found via name lookup. This redesign uses the fact that an IndirectFieldDecl declaration will always follow an anonymous implicit field to remove the special case of name lookup.
llvm-svn: 122387
inconsistent with the type that the builtin *should* have, forget
about the builtin altogether: we don't want subsequence analyses,
CodeGen, etc., to think that we have a proper builtin function.
C is protected from errors here because it allows one to use a
library builtin without having a declaration, and detects inconsistent
(re-)declarations of builtins during declaration merging. C++ was
unprotected, and therefore would crash.
Fixes PR8839.
llvm-svn: 122351
classes, categories, protocols, and class extensions, where the
methods and properties of these entities would be inserted into the
DeclContext in an ordering that doesn't necessarily reflect source
order. The culprits were Sema::ActOnMethodDeclaration(), which did not
perform the insertion of the just-created method declaration into
the DeclContext for these Objective-C entities, and
Sema::ActOnAtEnd(), which inserted all method declarations at the
*end* of the DeclContext.
With this fix in hand, clean up the code-completion actions for
property setters/getters that worked around this brokenness in the AST.
Fixes <rdar://problem/8062781>, where this problem manifested as poor
token-annotation information, but this would have struck again in many
other places.
llvm-svn: 122347
clang_getCursorLexicalParent() to cope with class and function
templates, along with the parent of the translation unit. Fixes PR8761
and PR8766.
llvm-svn: 122324
Fariborz Jahanian