Clear LookupResult object if invalid candidate is found.
If source code is invalid, error recovery can lead to name lookup in a set containing invalid declaration. The lookup is stopped once found such declaration, but LookupResult object could remain in inconsistent state. Its destructor triggered a check, which caused assert violation.
This patch fixes PR16964 and PR12791.
Order initializers of static data members of explicit specializations
I tried to implement this properly in r189051, but I didn't have enough
test coverage. Richard kindly provided more test cases than I could
possibly imagine and now we should have the correct condition.
ObjectiveC migrator: Cannot use bridging annotations for
ObjectiveC methods. Apply specific annotations for them
instead as determined by the static analyzer.
Don't emit an available_externally vtable pointing to linkonce_odr funcs.
This fixes pr13124.
From the discussion at
http://lists.cs.uiuc.edu/pipermail/cfe-dev/2012-June/022606.html
we know that we cannot make funcions in a weak_odr vtable also weak_odr. They
should remain linkonce_odr.
The side effect is that we cannot emit a available_externally vtable unless we
also emit a copy of the function. This also has an issue: If codegen is going
to output a function, sema has to mark it used. Given llvm.org/pr9114, it looks
like sema cannot be more aggressive at marking functions used because
of vtables.
This leaves us with a few unpleasant options:
* Marking functions in vtables used if possible. This sounds a bit sloppy, so
we should avoid it.
* Producing available_externally vtables only when all the functions in it are
already used or weak_odr. This would cover cases like
--------------------
struct foo {
virtual ~foo();
};
struct bar : public foo {
virtual void zed();
};
void f() {
foo *x(new bar);
delete x;
}
void g(bar *x) {
x->~bar(); // force the destructor to be used
}
--------------------------
Consumed analysis: add return_typestate attribute.
Patch by chris.wailes@gmail.com
Functions can now declare what state the consumable type the are returning will
be in. This is then used on the caller side and checked on the callee side.
Constructors now use this attribute instead of the 'consumes' attribute.
Jordan Rose [Tue, 3 Sep 2013 17:00:57 +0000 (17:00 +0000)]
Add an implicit dtor CFG node just before C++ 'delete' expressions.
This paves the way for adding support for modeling the destructor of a
region before it is deleted. The statement "delete <expr>" now generates
this series of CFG elements:
Manuel Klimek [Tue, 3 Sep 2013 15:10:01 +0000 (15:10 +0000)]
First step towards correctly formatting lambdas.
Implements parsing of lambdas in the UnwrappedLineParser.
This introduces the correct line breaks; the formatting of
lambda captures are still incorrect, and the braces are also
still formatted as if they were braced init lists instead of
blocks.
Remove DynCastMatcher, since it is pretty much the same as Matcher<T>::WrappedMatcher.
Summary:
Remove DynCastMatcher, since it is pretty much the same as Matcher<T>::WrappedMatcher.
This reduces the number of template instantiations and number of symbols in the object file.
Jin-Gu Kang [Mon, 2 Sep 2013 20:32:37 +0000 (20:32 +0000)]
the call to UsualArithmeticConversions should come after the call to CheckVectorOperands on CheckConditionalOperands function. This problem caused compilation error with test17 on "test/CodeGen/ext-vector.c".
Mark that qualifiers can prefix the auto type. This seems to just have
been an oversight, as it definitely works. Every test which changed had
the const written on the LHS of the auto already.
Notably, this also makes things like cpp11-migrate's formation of 'const
auto &' variables much more familiar.
Yes, many people feel that 'const' and other qualifiers belong on the
RHS of the type. I'm not going to argue about that because Clang already
*overwhelming* places the qualifiers on the LHS when it can and on the
RHS when it must. We shouldn't diverge for auto. We should add a tool to
clang-tidy that fixes this in either direction, and then wire up
clang-tidy to tools like cpp11-migrate to fix their placement after
transforms.
Store first and last newline position in the token text for string literals and comments.
Summary:
Store first and last newline position in the token text for string literals and
comments to avoid doing .find('\n') for each possible solution.
Pavel Labath [Mon, 2 Sep 2013 09:09:15 +0000 (09:09 +0000)]
[analyzer] Add very limited support for temporary destructors
This is an improved version of r186498. It enables ExprEngine to reason about
temporary object destructors. However, these destructor calls are never
inlined, since this feature is still broken. Still, this is sufficient to
properly handle noreturn temporary destructors.
Now, the analyzer correctly handles expressions like "a || A()", and executes the
destructor of "A" only on the paths where "a" evaluted to false.
Temporary destructor processing is still off by default and one has to
explicitly request it by setting cfg-temporary-dtors=true.
Switch the default mode for clang-format to '-file'. Make 'LLVM' the
fallback syntax used when we fail to find a '.clang-format' file. Adjust
variable names appropriately.
Update the editor integration pieces that specify a '-style' option to
specify it as '-style=file'. I left the functionality in place because
even if the preferred method is to use '.clang-format' files, this way
if someone needs to clobber the style in their editor we show how to do
so in these examples.
Also check in a '.clang-format' file for Clang to ensure that separate
checkouts and builds of Clang from LLVM can still get the nice
formatting. =] This unfortunately required nuking the test for the
absence of a '.clang-format' file as now the directory happening to be
under your clang source tree will cause there to always be a file. ;]
Richard Trieu [Sat, 31 Aug 2013 03:50:47 +0000 (03:50 +0000)]
The diagnostic err_init_conversion_failed uses the enum
InitializedEntity::EntityKind as an index for one of its %select. Over time,
EntityKind has been expanded, but the diagnostic text has not been updated.
This adds additional text to the %select to cover the new enum values. A
comment has been added to the end of the enum regarding this situation. This
fixes the crasher in PR17043.
ObjectiveC migrator: If we find a method that returns a C pointer
of some sort (but not an object, block pointer or CF pointers),
and is not annotated with the objc_returns_inner_pointer attribute,
we should suggest NS_RETURNS_INNER_POINTER annotation for these methods.
Consumed analysis: add 'consumable' class attribute.
Patch by chris.wailes@gmail.com
Adds the 'consumable' attribute that can be attached to classes. This replaces
the previous method of scanning a class's methods to see if any of them have
consumed analysis attributes attached to them. If consumed analysis attributes
are attached to methods of a class that isn't marked 'consumable' a warning
is generated.
Jordan Rose [Fri, 30 Aug 2013 19:17:26 +0000 (19:17 +0000)]
[analyzer] Treat the rvalue of a forward-declared struct as Unknown.
This will never happen in the analyzed code code, but can happen for checkers
that over-eagerly dereference pointers without checking that it's safe.
UnknownVal is a harmless enough value to get back.
Fixes an issue added in r189590, caught by our internal buildbot.
ObjectiveC migrator: infer NS_ENUM even when user
specified NSUInteger as the followup typedef.
With this change, NS_OPTIONS is only inferred
based on looking up how enumerators are speficied
(if they her hexadecimal, power of 2, or have
bitwise constant expressions).
Samuel Benzaquen [Fri, 30 Aug 2013 15:09:52 +0000 (15:09 +0000)]
Reduce the number of symbols by changing how templates are instantiated per function bound in the registry.
Summary:
Reduce the number of symbols by changing how templates are instantiated per function bound in the registry.
This change reduces the number of sections in Registry.cpp.o by a little over 10%.
Daniel Jasper [Fri, 30 Aug 2013 10:36:58 +0000 (10:36 +0000)]
clang-format: Enable formatting of protocol buffer definitions.
Almost by accident, clang-format seems to be able to format protocol
buffer definitions (https://code.google.com/p/protobuf/).
The only change is that a space is required between numeric constants
and opening square brackets (for default values). While this might in
theory be used for array subscripts (int val = 4[MyArray]), I have not
seen this pattern in practice much. If this is wrong, we can make this
smarter in the future.
Hans Wennborg [Fri, 30 Aug 2013 09:42:06 +0000 (09:42 +0000)]
Revert r188531: "Windows ToolChain: add VS bin dir to PogramPaths"
This never really worked. Even if we find and execute link.exe in the VS bin dir
this way, link.exe wouldn't find the DLLs it needs, libraries, etc.
It also causes trouble when the user has multiple versions of VS installed,
one of them is in the path, but this code finds the other one (PR17041).
Revert until we can fix this properly.
> Windows ToolChain: add VS bin dir to PogramPaths
>
> We have a lot of fancy logic to find Visual Studio, which is currently used
> to set the system header include paths.
>
> Use the same code to set the ProgramPaths, which is used for finding programs
> such as link.exe. Previously, Clang would just search PATH for link.exe,
> but now it should find it if it's able to find Visual Studio.
Pavel Labath [Fri, 30 Aug 2013 08:52:28 +0000 (08:52 +0000)]
Sema: avoid reuse of Exprs when synthesizing operator=
Summary:
Previously, Sema was reusing parts of the AST when synthesizing an assignment
operator, turning it into a AS-dag. This caused problems for the static
analyzer, which assumed an expression appears in the tree only once.
Here I make sure to always create a fresh Expr, when inserting something into
the AST, fixing PR16745 in the process.
Richard Smith [Thu, 29 Aug 2013 23:59:27 +0000 (23:59 +0000)]
Be lazier when loading KeyFunctions from PCH/modules. We don't need to load
these in eagerly if we're not actually processing a translation unit. The added
laziness here also avoids us loading in parts of a CXXRecordDecl earlier than an
upcoming class template specialization merging patch would like.
Ideally, we should mark the vtable as used when we see a definition for the key
function, rather than having a separate pass over dynamic classes at the end of
the TU. The existing approach is pretty bad for PCH/modules, since it forcibly
loads the declarations of all key functions in all imported modules, whether or
not those key functions are defined.
Eli Friedman [Thu, 29 Aug 2013 23:44:43 +0000 (23:44 +0000)]
Adjust clang for change to APFloat::toString.
I changed the diagnostic printing code because it's probably better
to cut off a digit from DBL_MAX than to print something like
1.300000001 when the user wrote 1.3.
Manman Ren [Thu, 29 Aug 2013 23:19:58 +0000 (23:19 +0000)]
Debug Info: generate a unique identifier for C++ struct, class, union, and enum.
We use CXX mangler to generate unique identifier for external C++ struct,
union, class and enum. Types with unique identifier are added to retained
types by DIBuilder.
Testing cases are updated to reflect the unique identifier generated for types.
The order of MDNodes is changed because of retained types and testing cases
are updated accordingly.
Testing case debug-info-uuid.cpp now emits error with Itanium mangler, since
uuid is not yet handled in Itanium mangler. And it will check for the error
message.
Manman Ren [Thu, 29 Aug 2013 20:48:48 +0000 (20:48 +0000)]
Debug Info: this reverts commit r189600.
We had further discussions on how to retain types, whether to do it in front end
or in DIBuilder. And we agree to do it in DIBuilder so front ends
generating unique identifier do not need to worry about retaining them.
Manman Ren [Thu, 29 Aug 2013 18:51:51 +0000 (18:51 +0000)]
Debug Info: generate a unique identifier for C++ struct, class, union, and enum.
We use CXX mangler to generate unique identifier for external C++ struct,
union, class and enum. Types with unique identifier are added to RetainedTypes
to make sure they are treated as used even when all uses are replaced with
the identifiers.
A single type can be added to RetainedTypes multiple times. For example, both
createForwardDecl and createLimitedType can add the same type to RetainedTypes.
A set is used to avoid duplication when updating AllRetainTypes in DIBuilder.
Testing cases are updated to reflect the unique identifier generated for types.
The order of MDNodes is changed because of retained types and testing cases
are updated accordingly.
Testing case debug-info-uuid.cpp now emits error with Itanium mangler, since
uuid is not yet handled in Itanium mangler.
We choose to update RetainedTypes in clang, then at finalize(), we update
AllRetainTypes in DIBuilder. The other choice is to update AllRetainTypes
in DIBuilder when creating a DICompositeType with unique identifier. This
option requires using ValueHandle for AllRetainTypes in DIBuilder since
the created DICompositeType can be modified later on by setContainingType etc.
Consumed analysis: improve handling of conditionals.
Patch by chris.wailes@gmail.com.
* The TestedVarsVisitor was folded into the ConsumedStmtVisitor.
* The VarTestResult class was updated to allow these changes.
* The PropagationInfo class was updated for the same reasons.
* Correctly handle short-circuiting of Boolean operations.
* Blocks are now marked as unreachable when we can statically prove we will
never branch to them.
* Unreachable blocks are skipped by the analysis.
Pavel Labath [Thu, 29 Aug 2013 16:06:04 +0000 (16:06 +0000)]
[analyzer] Fix handling of "empty" structs with base classes
Summary:
RegionStoreManager had an optimization which replaces references to empty
structs with UnknownVal. Unfortunately, this check didn't take into account
possible field members in base classes.
To address this, I changed this test to "is empty and has no base classes". I
don't consider it worth the trouble to go through base classes and check if all
of them are empty.
Samuel Benzaquen [Thu, 29 Aug 2013 15:39:26 +0000 (15:39 +0000)]
Fix tests to be more specific.
The environments can inject some declaration in every translation unit,
which can match very generic matchers, thus failing the tests.
Summary:
Fix tests to be more specific.
The environments can inject some declaration in every translation unit,
which can match very generic matchers, thus failing the tests.
Manuel Klimek [Thu, 29 Aug 2013 15:21:40 +0000 (15:21 +0000)]
Fixes various problems with accounting for tabs in the original code.
We now count the original token's column directly when lexing the
tokens, where we already have all knowledge about where lines start.
Before this patch, formatting:
void f() {
\tg();
\th();
}
would incorrectly count the \t's as 1 character if only the line
containing h() was reformatted, and thus indent h() at offset 1.
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