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2009-03-04Finish up some fixes related to <rdar://problem/6497631> Message lookup is ↵Steve Naroff
sometimes different than gcc's. - Disallow casting 'super'. GCC allows this, however it doesn't make sense (super isn't an expression and the cast won't alter lookup/dispatch). - Tighten up lookup when messaging 'self'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66033 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04Check that the return type for function definitions is complete.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66027 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04allocate MultiKeywordSelector's out of a bump pointer allocator instead of ↵Chris Lattner
malloc. This has two advantages 1) no more leaking them, 2) fewer calls to malloc. This changes us from calling malloc 3685/1390/883/2974/1185 times respectively on 16/20/24/28/32 byte objects when parsing cocoa.h with pth and -disable-free to calling it 2816/1020/702/2903/1168 times each respectively. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66017 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Change a warning to an error...Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65978 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Implement an important missing warning when a selectorFariborz Jahanian
is searched for in the global pool. It already uncovered a clang bug in message selection. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65974 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Fix <rdar://problem/6252237> [sema] qualified id should be disallowed in ↵Steve Naroff
@catch statements. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65969 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Fix <rdar://problem/6632061> [sema] non object types should not be allowed ↵Steve Naroff
in @catch statements. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65968 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03implement support for propagating *features* down to the code generatorChris Lattner
and defining target-specific macros based on them (like __SSE3__ and friends). After extensive discussion with Daniel, this work will need driver support, which will translate things like -msse3 into a -mattr feature. Until this work is done, the code in clang.cpp is disabled and the X86TargetInfo ctor still defaults to SSE2. With these two things changed, this code will work. PR3634 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65966 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Fix <rdar://problem/6497242> Inherited overridden protocol declared objects ↵Steve Naroff
don't work. Change Sema::DiagnosePropertyMismatch() to check for type compatibility (rather than type equivalence, which is too strict). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65949 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Fix <rdar://problem/6497608> clang does not catch ivar type mismatches in ↵Steve Naroff
@implementation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65948 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Implement the basics of implicit instantiation of class templates, inDouglas Gregor
response to attempts to diagnose an "incomplete" type. This will force us to use DiagnoseIncompleteType more regularly (rather than looking at isIncompleteType), but that's also a good thing. Implicit instantiation is still very simplistic, and will create a new definition for the class template specialization (as it should) but it only actually instantiates the base classes and attaches those. Actually instantiating class members will follow. Also, instantiate the types of non-type template parameters before checking them, allowing, e.g., template<typename T, T Value> struct Constant; to work properly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65924 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Check of ivar access access control.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65912 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-02start wiring up support for target-specific -mfoo options like -msseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65881 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-02Diagnose a variety of access of ivars when they conflict with Fariborz Jahanian
local or global variables in instance/class methods. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65879 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-01Fix <rdar://problem/6248764> parser rejects: bad receiver type 'CFStringRef'.Steve Naroff
Downgrade an error to a warning (for GCC compatibility). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65779 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-28TargetInfo::validateAsmConstraint now takes a reference to the full ↵Anders Carlsson
constraints string. This will make it possible to support multi-character constraints. No functionality change (for now). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65696 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-28Start of checking for gotos which jump to an illegal destination. Eli Friedman
As far as I know, this catches all cases of jumping into the scope of a variable with a variably modified type (excluding statement expressions) in C. This is missing some stuff we probably want to check (other kinds of variably modified declarations, statement expressions, indirect gotos/addresses of labels in a scope, ObjC @try/@finally, cleanup attribute), the diagnostics aren't very good, and it's not particularly efficient, but it's a decent start. This patch is a slightly modified version of the patch I attached to PR3259, and it fixes that bug. I was sort of planning on improving it, but I think it's okay as-is, especially since it looks like CodeGen doesn't have any use for this sort of data structure. The only significant change I can think of from the version I attached to PR3259 is that this version skips running the checking code when a function doesn't contain any labels. This patch doesn't cover case statements, which also need similar checking; I'm not sure how we should deal with that. Extending the goto checking to also check case statements wouldn't be too hard; it's just a matter of keeping track of the scope of the closest switch and checking that the scope of every case is the same as the scope of the switch. That said, it would likely be a performance hit to run this check on every function (it's an extra pass over the entire function), so we probably want some other solution. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65678 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-27Diagnose gc attribute mismatch of property and its ivar.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65656 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-27upgrade various 'implicit int' warnings from an ext-warn to warning when notChris Lattner
in C89 mode. This makes it enabled by default instead of only enabled with -pedantic. Clang defaults to c99 mode, so people will see this more often than with GCC, but they can always use -std=c89 if they really want c89. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65647 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-27Clean up and document code modification hints.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65641 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-27change a diagnostic message from something pedantically correct butChris Lattner
useless to something more vague but hopefully more clear. rdar://6624173 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65639 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-26Introduce code modification hints into the diagnostics system. When weDouglas Gregor
know how to recover from an error, we can attach a hint to the diagnostic that states how to modify the code, which can be one of: - Insert some new code (a text string) at a particular source location - Remove the code within a given range - Replace the code within a given range with some new code (a text string) Right now, we use these hints to annotate diagnostic information. For example, if one uses the '>>' in a template argument in C++98, as in this code: template<int I> class B { }; B<1000 >> 2> *b1; we'll warn that the behavior will change in C++0x. The fix is to insert parenthese, so we use code insertion annotations to illustrate where the parentheses go: test.cpp:10:10: warning: use of right-shift operator ('>>') in template argument will require parentheses in C++0x B<1000 >> 2> *b1; ^ ( ) Use of these annotations is partially implemented for HTML diagnostics, but it's not (yet) producing valid HTML, which may be related to PR2386, so it has been #if 0'd out. In this future, we could consider hooking this mechanism up to the rewriter to actually try to fix these problems during compilation (or, after a compilation whose only errors have fixes). For now, however, I suggest that we use these code modification hints whenever we can, so that we get better diagnostics now and will have better coverage when we find better ways to use this information. This also fixes PR3410 by placing the complaint about missing tokens just after the previous token (rather than at the location of the next token). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65570 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-25Cope with use of the token '>>' inside a template argument list, e.g.,Douglas Gregor
vector<vector<double>> Matrix; In C++98/03, this token always means "right shift". However, if we're in a context where we know that it can't mean "right shift", provide a friendly reminder to put a space between the two >'s and then treat it as two >'s as part of recovery. In C++0x, this token is always broken into two '>' tokens. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65484 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-25Perform additional semantic checking of class templateDouglas Gregor
specializations. In particular: - Make sure class template specializations have a "template<>" header, and complain if they don't. - Make sure class template specializations are declared/defined within a valid context. (e.g., you can't declare a specialization std::vector<MyType> in the global namespace). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65476 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-25Implement parsing of nested-name-specifiers that involve template-ids, e.g.,Douglas Gregor
std::vector<int>::allocator_type When we parse a template-id that names a type, it will become either a template-id annotation (which is a parsed representation of a template-id that has not yet been through semantic analysis) or a typename annotation (where semantic analysis has resolved the template-id to an actual type), depending on the context. We only produce a type in contexts where we know that we only need type information, e.g., in a type specifier. Otherwise, we create a template-id annotation that can later be "upgraded" by transforming it into a typename annotation when the parser needs a type. This occurs, for example, when we've parsed "std::vector<int>" above and then see the '::' after it. However, it means that when writing something like this: template<> class Outer::Inner<int> { ... }; We have two tokens to represent Outer::Inner<int>: one token for the nested name specifier Outer::, and one template-id annotation token for Inner<int>, which will be passed to semantic analysis to define the class template specialization. Most of the churn in the template tests in this patch come from an improvement in our error recovery from ill-formed template-ids. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65467 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-25Use CheckAssignmentConstraints for checking the cleanup attr function. Fixes ↵Anders Carlsson
PR3656. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65461 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-24In C, when we see a function declaration within a local scope, exportDouglas Gregor
that declaration to global scope so that it can be found from other scopes. This allows us to diagnose redeclaration errors for external declarations across scopes. We also warn when name lookup finds such an out-of-scope declaration. This is part of <rdar://problem/6127293>; we'll also need to do the same thing for variables. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65373 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-24Improve merging of function declarations. Specifically:Douglas Gregor
- When we are declaring a function in local scope, we can merge with a visible declaration from an outer scope if that declaration refers to an entity with linkage. This behavior now works in C++ and properly ignores entities without linkage. - Diagnose the use of "static" on a function declaration in local scope. - Diagnose the declaration of a static function after a non-static declaration of the same function. - Propagate the storage specifier to a function declaration from a prior declaration (PR3425) - Don't name-mangle "main" git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65360 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-23- Generate error for protocol qualifiers on 'Class'.Steve Naroff
- Generate error for protocol qualifiers on non-ObjC types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65333 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-22Contains the following (related to problems found while investigting ↵Steve Naroff
<rdar://problem/6497631> Message lookup is sometimes different than gcc's). - Implement instance/class overloading in ObjCContainerDecl (removing a FIXME). This involved hacking NamedDecl::declarationReplaces(), which took awhile to figure out (didn't realize replace was the default). - Changed Sema::ActOnInstanceMessage() to remove redundant warnings when dealing with protocols. For now, I've omitted the "protocol" term in the diagnostic. It simplifies the code flow and wan't always 100% accurate (e.g. "Foo<Prot>" looks in the class interface, not just the protocol). - Changed several test cases to jive with the above changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65292 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-22Sanity fix for PR3642: if we're treating a diagnostic as an error, it's Eli Friedman
required to actually be an error for correctness. The attached testcase now gives an error instead of mysteriously crashing. Now, it's possible we actually want to support the given usage, but I haven't looked at the relevant code closely. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65253 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-21Warn about bogus protocol qualifiers.Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65241 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-21Warn on use of __weak attribute on localFariborz Jahanian
variable (objc2 gc specific). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65240 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20Fix <rdar://problem/6500554> missing objc error message.Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65198 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19replace a dirty hack with a clean solution. Too bad we can't Chris Lattner
use Blocks for our callbacks ;-) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65083 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19fix PR3609, emit:Chris Lattner
t.c:1:10: error: missing terminating '>' character #include <stdio.h ^ instead of: t.c:1:10: error: missing terminating " character #include <stdio.h ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65052 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Downgrade the "excess elements in initializer" errors to warnings *inDouglas Gregor
C*. They're required errors in C++. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64964 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18rip out __builtin_overloadChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64961 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Downgrade complaints about calling unavailable functions to a warningDouglas Gregor
(as GCC does), except when we've performed overload resolution and found an unavailable function: in this case, we actually error. Merge the checking of unavailable functions with the checking for deprecated functions. This unifies a bit of code, and makes sure that we're checking for unavailable functions in the right places. Also, this check can cause an error. We may, eventually, want an option to make "unavailable" warnings into errors. Implement much of the logic needed for C++0x deleted functions, which are effectively the same as "unavailable" functions (but always cause an error when referenced). However, we don't have the syntax to specify deleted functions yet :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64955 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Start generating gc'able code using the newFariborz Jahanian
objc gc type attributes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64935 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Allow "overloadable" functions in C to be declared as variadic withoutDouglas Gregor
any named parameters, e.g., this is accepted in C: void f(...) __attribute__((overloadable)); although this would be rejected: void f(...); To do this, moved the checking of the "ellipsis without any named arguments" condition from the parser into Sema (where it belongs anyway). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64902 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Don't allow calls to functions marked "unavailable". There's more workDouglas Gregor
to do in this area, since there are other places that reference FunctionDecls. Don't allow "overloadable" functions (in C) to be declared without a prototype. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64897 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Implement basic parsing and semantic analysis for explicitDouglas Gregor
specialization of class templates, e.g., template<typename T> class X; template<> class X<int> { /* blah */ }; Each specialization is a different *Decl node (naturally), and can have different members. We keep track of forward declarations and definitions as for other class/struct/union types. This is only the basic framework: we still have to deal with checking the template headers properly, improving recovery when there are failures, handling nested name specifiers, etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64848 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Attribute 'iboutlet' can be applied to Objective-C property declarations.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64831 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Remove the error about redefining library functions. It's causing tooDouglas Gregor
much pain when compiling the Linux kernel (PR3592). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64767 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17add an accessor.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64760 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17emit:Chris Lattner
t.c:4:9: error: invalid type 'short *' to __real operator __tg_choose (__real__(z), C##f(z), (C)(z), C##l(z)), ^ instead of: t.c:4:9: error: invalid type 'short *' to __real or __imag operator __tg_choose (__real__(z), C##f(z), (C)(z), C##l(z)), ^ fixing a fixme. It would be even fancier to get the spelling of the token, but I don't care *that* much :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64759 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17add an accessor.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64758 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17remove "; candidates are/is:" from various ambiguity diagnostics.Chris Lattner
2 out of 2 people on irc prefer them gone :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64749 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17fix notes so that they are always filtered with the same logic Chris Lattner
as the last non-note diagnostic that preceeded them. This ensures that diagnostics in main files which have notes with locations in system headers get all the bits and pieces emitted or not in a unit. This fixes PR3215. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64746 91177308-0d34-0410-b5e6-96231b3b80d8