WHAT!?!
It turns out that Type::isPromotableIntegerType() was not considering
enumeration types to be promotable, so we would never do the
promotion despite having properly computed the promotion type when the
enum was defined. Various operations on values of enum type just
"worked" because we could still compute the integer rank of an enum
type; the oddity, however, is that operations such as "add an enum and
an unsigned" would often have an enum result type (!). The bug
actually showed up as a spurious -Wformat diagnostic
(<rdar://problem/7595366>), but in theory it could cause miscompiles.
In this commit:
- Enum types with a promotion type of "int" or "unsigned int" are
promotable.
- Tweaked the computation of promotable types for enums
- For all of the ABIs, treat enum types the same way as their
underlying types (*not* their promotion types) for argument passing
and return values
- Extend the ABI tester with support for enumeration types
llvm-svn: 95117
- In C++, prior to the closing '}', set the type of enumerators
based on the type of their initializer. Don't perform unary
conversions on the enumerator values.
- In C++, handle overflow when an enumerator has no initializer and
its value cannot be represented in the type of the previous
enumerator.
- In C, handle overflow more gracefully, by complaining and then
falling back to the C++ rules.
- In C, if the enumerator value is representable in an int, convert the
expression to the type 'int'.
Fixes PR5854 and PR4515.
llvm-svn: 95031
(1) libAnalysis is a generic analysis library that can be used by
Sema. It defines the CFG, basic dataflow analysis primitives, and
inexpensive flow-sensitive analyses (e.g. LiveVariables).
(2) libChecker contains the guts of the static analyzer, incuding the
path-sensitive analysis engine and domain-specific checks.
Now any clients that want to use the frontend to build their own tools
don't need to link in the entire static analyzer.
This change exposes various obvious cleanups that can be made to the
layout of files and headers in libChecker. More changes pending. :)
This change also exposed a layering violation between AnalysisContext
and MemRegion. BlockInvocationContext shouldn't explicitly know about
BlockDataRegions. For now I've removed the BlockDataRegion* from
BlockInvocationContext (removing context-sensitivity; although this
wasn't used yet). We need to have a better way to extend
BlockInvocationContext (and any LocationContext) to add
context-sensitivty.
llvm-svn: 94406
translation unit. This is temporary for function and block parameters;
template parameters can just stay this way, since Templates aren't
DeclContexts. This gives us the nice property that everything created
in a record DC should have access in C++.
llvm-svn: 94122
CallExprs as those edges help cause a n^2 explosion in the number of
destructor calls. Other consumers, such as static analysis, that
would like to have more a more complete CFG can select the inclusion
of those edges as CFG build time.
This also fixes up the two compilation users of CFGs to be tolerant of
having or not having those edges. All catch code is assumed be to
live if we didn't generate the exceptional edges for CallExprs.
llvm-svn: 94074
function template declared within a class template did not match a
function in another scope. We really need to rework how
friends-in-templates are semantically checked.
llvm-svn: 93642
do not look into base classes if there are any dependent base
classes. Instead, note in the lookup result that we couldn't look into
any dependent bases. Use that new result kind to detect when this case
occurs, so that we can fall back to treating the type/value/etc. as a
member of an unknown specialization.
Fixes an issue where we were resolving lookup at template definition
time and then missing an ambiguity at template instantiation time.
llvm-svn: 93497
finds nothing), and the current instantiation has dependent base
classes, treat the qualified lookup as if it referred to an unknown
specialization. Fixes PR6031.
llvm-svn: 93433
need an error term for the CFG. I suspect we'll always have to cope
with getCFG returning 0, though, I'd love to see even that possibility
removed.
llvm-svn: 93411
that name constructors, the endless joys of out-of-line constructor
definitions, and various other corner cases that the previous hack
never imagined. Fixes PR5688 and tightens up semantic analysis for
constructor names.
Additionally, fixed a problem where we wouldn't properly enter the
declarator scope of a parenthesized declarator. We were entering the
scope, then leaving it when we saw the ")"; now, we re-enter the
declarator scope before parsing the parameter list.
Note that we are forced to perform some tentative parsing within a
class (call it C) to tell the difference between
C(int); // constructor
and
C (f)(int); // member function
which is rather unfortunate. And, although it isn't necessary for
correctness, we use the same tentative-parsing mechanism for
out-of-line constructors to improve diagnostics in icky cases like:
C::C C::f(int); // error: C::C refers to the constructor name, but
// we complain nicely and recover by treating it as
// a type.
llvm-svn: 93322
latter may (eventually) perform multiple levels of desugaring (thus
breaking the newly-added tests) and the former is faster. Thanks, John!
llvm-svn: 93192
they redefine is a class-name but not a typedef-name, per C++0x
[dcl.typedef]p4. The code in the test was valid C++98 and is valid
C++0x, but an unintended consequence of DR56 made it ill-formed in
C++03 (which we were luck enough to implement). Fixes PR5455.
llvm-svn: 93188
result for a nested class whose first non-pure virtual member function
has an inline body. Previously, we were checking for the key function
before we had seen the (delayed) inline body.
llvm-svn: 92839
deterministic and work properly with templates. Once a class that
needs a vtable has been defined, we now do one if two things:
- If the class has no key function, we place the class on a list of
classes whose virtual functions will need to be "marked" at the
end of the translation unit. The delay until the end of the
translation unit is needed because we might see template
specializations of these virtual functions.
- If the class has a key function, we do nothing; when the key
function is defined, the class will be placed on the
aforementioned list.
At the end of the translation unit, we "mark" all of the virtual
functions of the classes on the list as used, possibly causing
template instantiation and other classes to be added to the
list. This gets LLVM's lib/Support/CommandLine.cpp compiling again.
llvm-svn: 92821
- All classes can have a key function; templates don't change that.
non-template classes when computing the key function.
- We always mark all of the virtual member functions of class
template instantiations.
- The vtable for an instantiation of a class template has weak
linkage.
We could probably use available_externally linkage for vtables of
classes instantiated by explicit instantiation declarations (extern
templates), but GCC doesn't do this and I'm not 100% that the ABI
permits it.
llvm-svn: 92753
assembly code. This avoids changing the bahvior when normal asm("")
statements are used.
The type of code affected would be:
void* t4(void) { __asm mov eax, fs:[0x10] }
I hope people like this version, if not, let me know.
llvm-svn: 92531
constructs:
- Instance variable lookup ("foo->ivar" and, in instance methods, "ivar")
- Property name lookup ("foo.prop")
- Superclasses
- Various places where a class name is required
- Protocol names (e.g., id<proto>)
This seems to cover many of the common places where typos could occur.
llvm-svn: 92449
attach the appropriate attributes to it. I don't think
this manifests as any real change though, we're still
not getting the right LLVM IR attributes out of codegen.
llvm-svn: 92316
tring str2;
we produce the following diagnostic + fix-it:
typo.cpp:15:1: error: unknown type name 'tring'; did you mean 'string'?
tring str2;
^~~~~
string
To make this really useful, we'll need to introduce typo correction in
many more places (wherever we do name lookup), and implement
declaration-vs-expression heuristics that cope with typos
better. However, for now this will handle the simple cases where we
already get good "unknown type name" diagnostics.
The LookupVisibleDecls functions are intended to be used by code
completion as well as typo correction; that refactoring will happen
later.
llvm-svn: 92308
Darwin's sekrit fourth argument. This should probably be factored to
let targets make target-specific decisions about what main() should look like.
Fixes rdar://problem/7414990
or if different platforms have radically different ideas of what they want in
llvm-svn: 92128
Sema::getTypeName.
"LookupNestedNameSpecifierName" isn't quite the right kind of lookup, though;
it doesn't ignore namespaces. Someone more familiar with the lookup code
should fix this properly.
llvm-svn: 91809
