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2013-03-12Error if an extern C declaration matches a previous hidden extern C declaration.Rafael Espindola
Without this patch we produce an error for extern "C" { void f() { extern int b; } } extern "C" { extern float b; } but not for extern "C" { void f() { extern int b; } } extern "C" { float b; } git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176867 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Remove a bogus assert so we don't crash inRafael Espindola
namespace { struct X {}; } extern "C" { X b = X(); } git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176866 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Remove driver support for Hexagon V2 and V3Matthew Curtis
Driver will now error when trying to compile for V2 or V3. Removal of V2 and V3 support will allow us to simplify the hexagon back-end. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176859 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-11Objective-C: When using super.prop, property should beFariborz Jahanian
looked up the current class's super class. // rdar://13349296 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176832 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-11Disallow using -fmodules with -no-integrated-as.Ted Kremenek
Modules enables features such as auto-linking, and we simply do not want to support a matrix of subtly enabled/disabled features depending on whether or not a user is using the integrated assembler. It isn't clear if this is the best place to do this check. For one thing, these kind of errors are not caught by the serialized diagnostics. Fixes <rdar://problem/13289240> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176826 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-11Improve the caching of debuginfo Objective C interface types.Adrian Prantl
Generate forward declarations that are RAUW'd by finalize(). We thus avoid outputting the same type several times in multiple stages of completion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176820 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-11Add -Wc99-compat warning for C11 unicode string and character literals.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176817 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-11Partly revert "Move clang tests that depend on llvm/ADT/Statistic.h to a ↵Jan Wen Voung
subdir". This reverts commit 176730, and uses "REQUIRES: asserts" instead. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176815 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-11[libclang] Fix a test and a warning on windows.Argyrios Kyrtzidis
Patch by Guy Benyei! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176806 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-11Add a test case for the 'vec_type_hint' attribute that was introduced inJoey Gouly
r176686. I missed this file in the previous commit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176803 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-10PR15480: fixed second parameter types of vec_lde, vec_lvebx, vec_lvehx, and ↵Anton Yartsev
vec_lvewx according to AltiVec Programming Interface Manual git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176789 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-10Fix indirect byval passing of records in address spaced memory. Allocate ↵Guy Benyei
memory on stack, and memcpy the actual value before the call. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176786 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09When lexing in C11 mode, accept unicode character and string literals, per C11Richard Smith
6.4.4.4/1 and 6.4.5/1. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176780 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09Handle _Pragma on a u8, u, or U string literal per the C11 specification. AlsoRichard Smith
handle raw string literals here. C++11 doesn't yet specify how they will behave, but discussion on core suggests that we should just strip off everything but the r-char-sequence. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176779 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09[analyzer] Make Suppress IDC checker aware that it might not start from the ↵Anna Zaks
same node it was registered at The visitor used to assume that the value it’s tracking is null in the first node it examines. This is not true. If we are registering the Suppress Inlined Defensive checks visitor while traversing in another visitor (such as FindlastStoreVisitor). When we restart with the IDC visitor, the invariance of the visitor does not hold since the symbol we are tracking no longer exists at that point. I had to pass the ErrorNode when creating the IDC visitor, because, in some cases, node N is neither the error node nor will be visible along the path (we had not finalized the path at that point and are dealing with ExplodedGraph.) We should revisit the other visitors which might not be aware that they might get nodes, which are later in path than the trigger point. This suppresses a number of inline defensive checks in JavaScriptCore. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176756 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09[analyzer] Rename AttrNonNullChecker -> NonNullParamCheckerAnna Zaks
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176755 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09[analyzer] Add test case for reference to null pointer param checkAnna Zaks
This tests that we track the original Expr if getDerefExpr fails. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176754 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09[analyzer] Be more consistent about Objective-C methods that free memory.Jordan Rose
Previously, MallocChecker's pointer escape check and its post-call state update for Objective-C method calls had a fair amount duplicated logic and not-entirely-consistent checks. This commit restructures all this to be more consistent and possibly allow us to be more aggressive in warning about double-frees. New policy (applies to system header methods only): (1) If this is a method we know about, model it as taking/holding ownership of the passed-in buffer. (1a) ...unless there's a "freeWhenDone:" parameter with a zero (NO) value. (2) If there's a "freeWhenDone:" parameter (but it's not a method we know about), treat the buffer as escaping if the value is non-zero (YES) and non-escaping if it's zero (NO). (3) If the first selector piece ends with "NoCopy" (but it's not a method we know about and there's no "freeWhenDone:" parameter), treat the buffer as escaping. The reason that (2) and (3) don't explicitly model the ownership transfer is because we can't be sure that they will actually free the memory using free(), and we wouldn't want to emit a spurious "mismatched allocator" warning (coming in Anton's upcoming patch). In the future, we may have an idea of a "generic deallocation", i.e. we assume that the deallocator is correct but still continue tracking the region so that we can warn about double-frees. Patch by Anton Yartsev, with modifications from me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176744 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-09Adjust the special non-C++ enum block return type inferenceJohn McCall
so that it looks through certain syntactic forms and applies even if normal inference would have succeeded. There is potential for source incompatibility from this change, but overall we feel that it produces a much cleaner and more defensible result, and the block compatibility rules should curb a lot of the potential for annoyance. rdar://13200889 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176743 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08[analyzer] Look for lvalue nodes when tracking a null pointer.Jordan Rose
r176010 introduced the notion of "interesting" lvalue expressions, whose nodes are guaranteed never to be reclaimed by the ExplodedGraph. This was used in bugreporter::trackNullOrUndefValue to find the region that contains the null or undef value being tracked. However, the /rvalue/ nodes (i.e. the loads from these lvalues that produce a null or undef value) /are/ still being reclaimed, and if we couldn't find the node for the rvalue, we just give up. This patch changes that so that we look for the node for either the rvalue or the lvalue -- preferring the former, since it lets us fall back to value-only tracking in cases where we can't get a region, but allowing the latter as well. <rdar://problem/13342842> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176737 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08Move clang tests that depend on llvm/ADT/Statistic.h to a subdir.Jan Wen Voung
The subdirectory has a lit.local.cfg that marks the tests unsupported if llvm was built without Asserts. There will be a patch in LLVM that disables statistics gathering when built without Asserts so that full Release builds can be faster. Statistics can also be enabled by building with -DLLVM_ENABLE_STATS. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176730 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08Sema: Preserve attributes on parameters in instantiated function templates.Jordan Rose
This was causing correctness issues for ARC and the static analyzer when a function template has "consumed" Objective-C object parameters (i.e. parameters that will be released by the function before returning). The fix is threefold: (1) Actually copy over the attributes from old ParmVarDecls to new ones. (2) Have Sema::BuildFunctionType only work for building FunctionProtoTypes, which it was doing anyway. This allows us to pass an ExtProtoInfo instead of a plain ExtInfo and several flags. (3) Drop param attributes as part of StripImplicitInstantiation, which is used when an implicit instantiation is followed by an explicit one. <rdar://problem/12685622> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176728 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08<rdar://problem/13094134> Don't try to wire up typedef names for invalid ↵Douglas Gregor
anonymous tag declarations encountered during template instantiation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176727 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08<rdar://problem/13140795> Transform the scope type of a pseudo-destructor ↵Douglas Gregor
expression within the object scope. We were transforming the scope type of a pseudo-destructor expression (e.g., the first T in x->T::~T()) as a freestanding type, which meant that dependent template specialization types here would stay dependent even when no template parameters were named. This would eventually mean that a dependent expression would end up in what should be fully-instantiated ASTs, causing IRgen to assert. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176723 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08[PCH] When complaining that a header from the PCH was modified, also mentionArgyrios Kyrtzidis
the filename of the PCH file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176717 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08Add support for the OpenCL attribute 'vec_type_hint'.Joey Gouly
Patch by Murat Bolat! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176686 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08[libclang] Introduce clang_findIncludesInFile, that can be used to retrieve ↵Argyrios Kyrtzidis
all #import/#include directives in a specific file. It passes to the visitor, that the caller provides, CXCursor_InclusionDirective cursors for all the include directives in a particular file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176682 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-08[driver] If we're just linking, don't report --param X as unused option.Chad Rosier
PR15327 rdar://13372628 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176670 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07HeaderDoc: Support more of HeaderDoc documentation Fariborz Jahanian
commands; top level tags such as @interface and their 2nd level tags such as @coclass, etc. // rdar://12379114 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176667 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Add code completion for @import <rdar://problem/13344306>.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176666 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Improve LLDB's implicit cast-to-id to work with C++11 auto and any ↵Douglas Gregor
Objective-C object type <rdar://problem/13338107>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176665 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07When possible, move __block variables to the heap rather than copying them.Douglas Gregor
Fixes <rdar://problem/13330126>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176663 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Promote atomic type sizes up to a power of two, capped byJohn McCall
MaxAtomicPromoteWidth. Fix a ton of terrible bugs with _Atomic types and (non-intrinsic-mediated) loads and stores thereto. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176658 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07Evaluate compound literals directly into the result aggregateJohn McCall
when that aggregate isn't potentially aliased. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176654 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07[analyzer] Warn on passing a reference to null pointer as an argument in a callAnna Zaks
Warn about null pointer dereference earlier when a reference to a null pointer is passed in a call. The idea is that even though the standard might allow this, reporting the issue earlier is better for diagnostics (the error is reported closer to the place where the pointer was set to NULL). This also simplifies analyzer’s diagnostic logic, which has to track “where the null came from”. As a consequence, some of our null pointer warning suppression mechanisms started triggering more often. TODO: Change the name of the file and class to reflect the new check. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176612 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-07[analyzer] Check for returning null references in ReturnUndefChecker.Jordan Rose
Officially in the C++ standard, a null reference cannot exist. However, it's still very easy to create one: int &getNullRef() { int *p = 0; return *p; } We already check that binds to reference regions don't create null references. This patch checks that we don't create null references by returning, either. <rdar://problem/13364378> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176601 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06Ensure that DIType is regenerated after we visit an implementationAdrian Prantl
that adds ivars to an interface. Fixes rdar://13175234 This is an update to r176116 that performs a smart caching of interfaces. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176584 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06[analyzer] Pass the correct Expr to the bug reporter visitors when dealing ↵Anna Zaks
with CompoundLiteralExpr This allows us to trigger the IDC visitor in the added test case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176577 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06[analyzer] IDC: Add config option; perform the idc check on first “null ↵Anna Zaks
node” rather than last “non-null”. The second modification does not lead to any visible result, but, theoretically, is what we should have been looking at to begin with since we are checking if the node was assumed to be null in an inlined function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176576 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06Spell Objective-C correctly.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176563 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06say objective-C in the warning and streamlineFariborz Jahanian
several diagnostics into one. // rdar://13094352 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176560 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06Driver: add support for new style multiarch in Ubuntu 13.04Dmitri Gribenko
Patch by Sanne Wouda. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176557 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06[Sanitize] Don't emit function attribute sanitize_address/thread/memory if ↵Alexey Samsonov
the function is blacklisted. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176550 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06revert r176531 due to clan-native-arm failsWeiming Zhao
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176544 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06PR15390: If a function returns a pointer to a function, that function typeRichard Smith
can't have default arguments even though it's a parameter-declaration-clause in a function declaration. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176542 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06After issuing a diagnostic for undefining or redefining a builtin macro,Richard Smith
continue parsing the directive rather than silently discarding it. Allowing undef or redef of __TIME__ and __DATE__ is important to folks who want stable, reproducible builds. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176540 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-06objective-C: don't crash after diagnosingFariborz Jahanian
using object subscripting without declaring objectForKeyedSubscript: // rdar://13333205 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176539 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-05Preprocessor: don't keep comments under -traditional-cpp.Jordan Rose
This patch is designed for minimal intrusion into normal preprocessing and compilation; under -E -traditional-cpp, the lexer will still generate tok::comment nodes since it is preserving all whitespace, but the output printer will then throw it away. <rdar://problem/13338680> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176534 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-05PR 11326: Lack diagnosic message when ABI conflicts on ARMWeiming Zhao
When both Triple and -mabi are used, it may result into conflicting ABI value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176531 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-05Preprocessor: don't consider // to be a line comment in -E -std=c89 mode.Jordan Rose
It's beneficial when compiling to treat // as the start of a line comment even in -std=c89 mode, since it's not valid C code (with a few rare exceptions) and is usually intended as such. We emit a pedantic warning and then continue on as if line comments were enabled. This has been our behavior for quite some time. However, people use the preprocessor for things besides C source files. In today's prompting example, the input contains (unquoted) URLs, which contain // but should still be preserved. This change instructs the lexer to treat // as a plain token if Clang is in C90 mode and generating preprocessed output rather than actually compiling. <rdar://problem/13338743> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176526 91177308-0d34-0410-b5e6-96231b3b80d8
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