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path: root/lib/Sema/SemaDecl.cpp
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2009-02-26Create a new TypeNodes.def file that enumerates all of the types,Douglas Gregor
giving them rough classifications (normal types, never-canonical types, always-dependent types, abstract type representations) and making it far easier to make sure that we've hit all of the cases when decoding types. Switched some switch() statements on the type class over to using this mechanism, and filtering out those things we don't care about. For example, CodeGen should never see always-dependent or non-canonical types, while debug info generation should never see always-dependent types. More switch() statements on the type class need to be moved over to using this approach, so that we'll get warnings when we add a new type then fail to account for it somewhere in the compiler. As part of this, some types have been renamed: TypeOfExpr -> TypeOfExprType FunctionTypeProto -> FunctionProtoType FunctionTypeNoProto -> FunctionNoProtoType There shouldn't be any functionality change... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65591 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-26Zap the Sema constant initializer checking code that we aren't using Eli Friedman
anymore. If we want to reuse bits and pieces to add strict checking for constant initializers, we can dig them out of SVN history; the existing code won't be useful as-is. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65502 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-26Fix for PR3663/3669: use TryToFixInvalidVariablyModifiedType for Eli Friedman
variable declarations where applicable. Also, a few fixes to TryToFixInvalidVariablyModifiedType for issues that this exposed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65500 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-25C99 DR #316 implies that the function parameter types that are knownDouglas Gregor
only from a function definition (that does not have a prototype) are only used to determine the compatible with other declarations of that same function. In particular, when referencing the function we pretend as if it does not have a prototype. Implement this behavior, which fixes PR3626. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65460 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-24move some initialization checking code from SemaDecl.cppChris Lattner
to SemaInit.cpp, no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65394 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-24first wave of fixes for @encode sema support. This is part of PR3648.Chris Lattner
The big difference here is that (like string literal) @encode has array type, not pointer type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65391 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-24some minor cleanups, handle ObjCEncodeExpr in a couple places.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65389 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-24When we're declaring an object or function with linkage, teach nameDouglas Gregor
lookup to skip over names without linkage. This finishes <rdar://problem/6127293>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65386 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-24Extend the implicit declaration and checking against out-of-scopeDouglas Gregor
external declarations to also support external variable declarations. Unified the code for these two cases into two new subroutines. Note that we fail to diagnose cases like the one Neil pointed out, where a visible non-external declaration hides an external declaration by the same name. That will require some reshuffling of name lookup. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65385 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
2009-02-23fix rdar://6611778, a redefinition of an interface was causing anChris Lattner
assertion when the ivars and method list was reset into the existing interface. To fix this, mark decls as invalid when they are redefined, and don't insert ivars/methods into invalid decls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65340 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-22Throw the switch to exclusively use Evaluate (along with the small Eli Friedman
helper isConstantInitializer) to check whether an initializer is constant. This passes tests, but it's possible that it'll cause regressions with real-world code. Future work: 1. The diagnostics obtained this way are lower quality at the moment; some work both here and in Evaluate is needed for accurate diagnostics. 2. We probably need some extra code when we're in -pedantic mode so we can strictly enforce the rules in C99 6.6p7. 3. Dead code cleanup (this should wait until after 2, because we might want to re-use some of the code). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65265 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
2009-02-21Slight tweak to last commit: make sure to copy CVR qualifiers for fixed Eli Friedman
pointer types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65210 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-21Re-fix r65140 correctly.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65208 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
2009-02-20add plumbing to get ASTContext& down to allocation/deallocation points in ↵Chris Lattner
ObjCList, but don't start using it yet. Renamed some methods to be more consistent. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65168 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20move the @implementation ivar list to being an ObjCList, which preventsChris Lattner
it from being leaked, among other things. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65150 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20Always try to fold array sizes, and warn if we could fold something that ↵Anders Carlsson
isn't an ICE. This makes us compatible with GCC. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65140 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20Fix <rdar://problem/6586239> bitfield constraints not enforced (for ObjC)Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65128 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-20Suppress constant initializer checking when the declaration isn't valid. Eli Friedman
This prevents emitting diagnostics which are almost certainly useless. (Note that the test is checking that we emit only one diagnostic.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65101 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19GetTypeForDeclarator can return null on error now, handle this.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65076 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19Emit the correct diagnostics when we constant fold an array size to a ↵Anders Carlsson
negative value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65023 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19Couple of helpers for objc's gc attributes.Fariborz Jahanian
No change in functionality. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64989 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Return true on errors, return true on errors, return true on errorsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64957 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
2009-02-18Make warn-weak-field.m test pass again.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64927 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
2009-02-17Remove one more redundant dyn_cast.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64808 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Remove some redundant Decl -> Decl castings.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64804 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17All Decls have a DeclContext now, hooray! Fans of consistency rejoice.Argyrios Kyrtzidis
Pass the DeclContext to ObjCIvarDecls as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64801 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
2009-02-17Static variables and functions won't collide with standard libraryDouglas Gregor
functions, so if we're declaring a static we should implicitly declare a library function by the same name (e.g., malloc, strdup). Fixes PR3592. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64736 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Make PragmaPackStack be a private class in SemaAttr and make itsChris Lattner
instance in Sema be a pimpl. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64718 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17move attribute(packed) sema support out of SemaDecl into a new SemaAttr.cpp ↵Chris Lattner
file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64711 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow.Daniel Dunbar
- Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64689 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16diagnose uses of deprecated typenames and tags.Chris Lattner
We now pass all the deprecation tests in the objc.dg suite. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64679 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16Supply the header corresponding to a library builtin as a separate argument ↵Douglas Gregor
to the LIBBUILTIN macro git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64676 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16When merging from a function with a prototype to a function without aDouglas Gregor
prototype, synthesize ParmVarDecls for prototype-less FunctionDecl. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64666 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16Remove FindIvarDeclaration. Use lookupInstanceVariable is is functionallyFariborz Jahanian
the same. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64657 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16add assertionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64652 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16When a function with a prototype is redeclared without a prototype,Douglas Gregor
merge the prototype into the redeclaration (and make a note in the declaration). Fixes PR3588. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64641 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16Adopt a more principled approach to invalid declarations:Douglas Gregor
- If a declaration is an invalid redeclaration of an existing name, complain about the invalid redeclaration then avoid adding it to the AST (we can still parse the definition or initializer, if any). - If the declaration is invalid but there is no prior declaration with that name, introduce the invalid declaration into the AST (for later error recovery). - If the declaration is an invalid redeclaration of a builtin that starts with __builtin_, we produce an error and drop the redeclaration. If it is an invalid redeclaration of a library builtin (e.g., malloc, printf), warn (don't error!) and drop the redeclaration. If a user attempts to define a builtin, produce an error and (if it's a library builtin like malloc) suggest -ffreestanding. This addresses <rdar://problem/6097585> and PR2892. However, PR3588 is still going to cause some problems when builtins are redeclared without a prototype. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64639 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-15lots of trailing whitespaceChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64613 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-15Refactor the deprecated and unavailable checks into a newChris Lattner
DiagnoseUseOfDeprecatedDecl method. This ensures that they are treated consistently. This gets us 'unavailable' support on a few new types of decls, and makes sure we consistently silence deprecated when the caller is also deprecated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64612 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14Add hook to add attributes to function declarations that we knowDouglas Gregor
about, whether they are builtins or not. Use this to add the appropriate "format" attribute to NSLog, NSLogv, asprintf, and vasprintf, and to translate builtin attributes (from Builtins.def) into actual attributes on the function declaration. Use the "printf" format attribute on function declarations to determine whether we should do format string checking, rather than looking at an ad hoc list of builtins and "known" function names. Be a bit more careful about when we consider a function a "builtin" in C++. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64561 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14Make it possible for builtins to expression FILE* arguments, so thatDouglas Gregor
we can define builtins such as fprintf, vfprintf, and __builtin___fprintf_chk. Give a nice error message when we need to implicitly declare a function like fprintf. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64526 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14Extend builtin "attribute" syntax to include a notation forDouglas Gregor
printf-like functions, both builtin functions and those in the C library. The function-call checker now queries this attribute do determine if we have a printf-like function, rather than scanning through the list of "known functions IDs". However, there are 5 functions they are not yet "builtins", so the function-call checker handles them specifically still: - fprintf and vfprintf: the builtins mechanism cannot (yet) express FILE* arguments, so these can't be encoded. - NSLog: the builtins mechanism cannot (yet) express NSString* arguments, so this (and NSLogv) can't be encoded. - asprintf and vasprintf: these aren't part of the C99 standard library, so we really shouldn't be defining them as builtins in the general case (and we don't seem to have the machinery to make them builtins only on certain targets and depending on whether extensions are enabled). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64512 91177308-0d34-0410-b5e6-96231b3b80d8
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