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path: root/lib/Sema/SemaDecl.cpp
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2012-02-20When we resolve the type of an 'auto' variable, clear out the linkageDouglas Gregor
of that variable; it will need to be recomputed with the resolved type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150984 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-18Remove a debugging line accidentally left in the last commit.David Chisnall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150882 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-18Implement #pragma redefine_extname.David Chisnall
This fixes PR5172 and allows clang to compile C++ programs on Solaris using the system headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150881 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Avoid infinite mutual recursion in DiagnoseInvalidRedeclaration.Kaelyn Uhrain
Don't try to typo-correct a method redeclaration to declarations not in the current record as it could lead to infinite recursion if CorrectTypo finds more than one correction candidate in a parent record. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150735 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16C++11 allows unions to have static data members. Remove the correspondingRichard Smith
restriction and add some tests. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150721 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Shift Microsoft enum extensions from -fms-extensions to -fms-compatibility, ↵Eli Friedman
so -fms-extensions doesn't affect enum semantics in incompatible ways. <rdar://problem/10657186>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150663 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14Warn about non-int main() results in GNU C mode instead of erroring.John McCall
Based on a patch by Vasiliy Korchagin! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150500 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Deal with a horrible C++11 special case. If a non-literal type has a constexprRichard Smith
constructor, and that constructor is used to initialize an object of static storage duration such that all members and bases are initialized by constant expressions, constant initialization is performed. In this case, the object can still have a non-trivial destructor, and if it does, we must emit a dynamic initializer which performs no initialization and instead simply registers that destructor. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150419 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Update constexpr implementation to match CWG's chosen approach for core issuesRichard Smith
1358, 1360, 1452 and 1453. - Instantiations of constexpr functions are always constexpr. This removes the need for separate declaration/definition checking, which is now gone. - This makes it possible for a constexpr function to be virtual, if they are only dependently virtual. Virtual calls to such functions are not constant expressions. - Likewise, it's now possible for a literal type to have virtual base classes. A constexpr constructor for such a type cannot actually produce a constant expression, though, so add a special-case diagnostic for a constructor call to such a type rather than trying to evaluate it. - Classes with trivial default constructors (for which value initialization can produce a fully-initialized value) are considered literal types. - Classes with volatile members are not literal types. - constexpr constructors can be members of non-literal types. We do not yet use static initialization for global objects constructed in this way. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150359 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-12Employ DirectList initialized entities to properly sort through some ↵Sebastian Redl
initialization edge cases. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-11Represent C++ direct initializers as ParenListExprs before semantic analysisSebastian Redl
instead of having a special-purpose function. - ActOnCXXDirectInitializer, which was mostly duplication of AddInitializerToDecl (leading e.g. to PR10620, which Eli fixed a few days ago), is dropped completely. - MultiInitializer, which was an ugly hack I added, is dropped again. - We now have the infrastructure in place to distinguish between int x = {1}; int x({1}); int x{1}; -- VarDecl now has getInitStyle(), which indicates which of the above was used. -- CXXConstructExpr now has a flag to indicate that it represents list- initialization, although this is not yet used. - InstantiateInitializer was renamed to SubstInitializer and simplified. - ActOnParenOrParenListExpr has been replaced by ActOnParenListExpr, which always produces a ParenListExpr. Placed that so far failed to convert that back to a ParenExpr containing comma operators have been fixed. I'm pretty sure I could have made a crashing test case before this. The end result is a (I hope) considerably cleaner design of initializers. More importantly, the fact that I can now distinguish between the various initialization kinds means that I can get the tricky generalized initializer test cases Johannes Schaub supplied to work. (This is not yet done.) This commit passed self-host, with the resulting compiler passing the tests. I hope it doesn't break more complicated code. It's a pretty big change, but one that I feel is necessary. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150318 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-10PR11684, core issue 1417:Richard Smith
o Correct the handling of the restrictions on usage of cv-qualified and ref-qualified function types. o Fix a bug where such types were rejected in template type parameter default arguments, due to such arguments not being treated as a template type arg context. o Remove the ExtWarn for usage of such types as template arguments; that was a standard defect, not a GCC extension. o Improve the wording and unify the code for diagnosing cv-qualifiers with the code for diagnosing ref-qualifiers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150244 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Adding support for warning when a non-C compatible user-defined type is ↵Aaron Ballman
returned from an extern "C" function. Fixes bug 6143 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150128 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-08When completing a lambda expression, make sure to check and attach theDouglas Gregor
body of the lambda to the function call operator. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150087 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-07Fix a bug in semantic analysis involving anonymous structs and flexible arrays.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149966 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-07Fix a couple of nasty bugs involving negative enum constants. ↵Eli Friedman
<rdar://problem/10760113>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149965 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-06Removed redundant location info from ElaboratedTypeLoc / DependentNameLoc / ↵Abramo Bagnara
DependentTSTLoc. Uniformed names referencing elaborated keyword. No intended functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149889 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-05constexpr: Implement DR1358: An instantiation of a constexpr function whichRichard Smith
can't produce a constant expression is not ill-formed (so long as some instantiation of that function can produce a constant expression). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149802 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-05Basic: import SmallString<> into clang namespaceDylan Noblesmith
(I was going to fix the TODO about DenseMap too, but that would break self-host right now. See PR11922.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149799 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-04Move a method from IdentifierTable.h out of line and remove the SmallString ↵Benjamin Kramer
include. Fix all the transitive include users. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149783 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-04In C++11 mode, when an integral constant expression is desired and we have aRichard Smith
value of class type, look for a unique conversion operator converting to integral or unscoped enumeration type and use that. Implements [expr.const]p5. Sema::VerifyIntegerConstantExpression now performs the conversion and returns the converted result. Some important callers of Expr::isIntegralConstantExpr have been switched over to using it (including all of those required for C++11 conformance); this switch brings a side-benefit of improved diagnostics and, in several cases, simpler code. However, some language extensions and attributes have not been moved across and will not perform implicit conversions on constant expressions of literal class type where an ICE is required. In passing, fix static_assert to perform a contextual conversion to bool on its argument. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149776 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-04Disallow constexpr main.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149770 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-03Don't warn about anonymous struct/union in C11.Hans Wennborg
Also, in C, call this a C11 extension rather than a GNU extension. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149695 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-02Add some code to accurately perform odr-used marking for variables per the ↵Eli Friedman
C++11 rules. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149641 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-02objc: don't crash if primary class is missing and continuation classFariborz Jahanian
is declaring ivars. // rdar://10752081 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149573 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-01Fix crash on invalid in microsoft anonymous struct extension.Nico Weber
Fixes PR11847. Patch from Jason Haslam! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149460 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-31Make the callback object to Sema::CorrectTypo mandatory.Kaelyn Uhrain
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149451 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-27Added source location for the template keyword in AST template-id expressions.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149127 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-27Avoid redundant NNS qualification in constructor/destructor names.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149124 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-24Replace a hack to handle NSLog/NSLogv in sema by declaring them as Library ↵Jean-Daniel Dupas
Builtins. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148873 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-24Small code cleanup/simplification in Sema::ClassifyName.Kaelyn Uhrain
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148850 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-23Minor fixups for auto deduction of initializer lists.Sebastian Redl
Fix some review comments. Add a test for deduction when std::initializer_list isn't available yet. Fix redundant error messages. This fixes and outstanding FIXME too. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148735 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-21In Microsoft Mode, disable the C++11 strict integral conversion rules for ↵Francois Pichet
enumerator that were introduced with r148439. Otherwise MSVC headers won't compile in C++ 11 mode. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148642 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-20Instantiate dependent attributes when instantiating templates.DeLesley Hutchins
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148592 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-18constexpr: converted constant expression handling for enumerator values, caseRichard Smith
values and non-type template arguments of integral and enumeration types. This change causes some legal C++98 code to no longer compile in C++11 mode, by enforcing the C++11 rule that narrowing integral conversions are not permitted in the final implicit conversion sequence for the above cases. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148439 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-18Convert SemaDecl.cpp to pass callback objects to CorrectTypo.Kaelyn Uhrain
Includes tests highlighting the cases where accuracy has improved (there is one call that does no filtering beyond selecting the set of allowed keywords, and one call that only triggers for ObjC code for which a test by someone who knows ObjC would be welcome). Also fixes a small typo in one of the suggestion messages, and drops a malformed "expected-note" for a suggestion that did not occur even when the malformed note was committed as r145930. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148420 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Auto deduction support for std::initializer_list, including for-range ↵Sebastian Redl
support. This means you can now write: for (int i : {1, 4, 512, 23, 251}) {} git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148353 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17objc: fixes a bug where struct used inside anFariborz Jahanian
objc class was not being exported to parent decl context resulting in bogus mismatch warning later on. // rdar://10655530 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148320 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-17Remove unnecessary default cases in switches over enums.David Blaikie
This allows -Wswitch-enum to find switches that need updating when these enums are modified. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148281 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-14De-virtualize getPreviousDecl() and getMostRecentDecl() when we knowDouglas Gregor
we have a redeclarable type, and only use the new virtual versions (getPreviousDeclImpl() and getMostRecentDeclImpl()) when we don't have that type information. This keeps us from penalizing users with strict type information (and is the moral equivalent of a "final" method). Plus, settle on the names getPreviousDecl() and getMostRecentDecl() throughout. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148187 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-13Progress towards making isUsed() reflect whether a declaration is odr-used; ↵Eli Friedman
don't set isUsed for local variables which are referenced in unevaluated contexts. Make other code use isReferenced() (which basically indicates that a declaration isn't dead) where appropriate. I was forced to change test/SemaCXX/linkage.cpp because we aren't actually modeling extern "C" in the AST the way that testcase expects; we were not printing a warning only because we skipped the relevant check. Someone who actually understands the semantics here should fix that. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148158 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-13Don't crash while trying to diagnose a function declared at block scope with anRichard Smith
incomplete return type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148088 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12Improve 0-argument -Wvexing-parse diagnostic by adding notes with fix-its:Richard Smith
- If the declarator is at the start of a line, and the previous line contained another declarator and ended with a comma, then that comma was probably a typo for a semicolon: int n = 0, m = 1, l = 2, // k = 5; myImportantFunctionCall(); // oops! - If removing the parentheses would correctly initialize the object, then produce a note suggesting that fix. - Otherwise, if there is a simple initializer we can suggest which performs value-initialization, then provide a note suggesting a correction to that initializer. Sema::Declarator now tracks the location of the comma prior to the declarator in the declaration, if there is one, to facilitate providing the note. The code to determine an appropriate initializer from the -Wuninitialized warning has been factored out to allow use in both that and -Wvexing-parse. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148072 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12objective-c: fixes a regression in looking up namesFariborz Jahanian
in class extensions and categories by recent refactoring of objc class ASTs. // rdar://1066654 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147982 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Improve the diagnostic when trying to redefine a typedef with aDouglas Gregor
variably-modified type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147973 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11C11 allows typedefs to be redefined. Implement this in C11 mode, andDouglas Gregor
downgrade the default-error warning to an ExtWarn in C90/99. <rdar://problem/10668057> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147925 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-10Update C++11 scoped enumeration support to match the final proposal:Richard Smith
- reject definitions of enums within friend declarations - require 'enum', not 'enum class', for non-declaring references to scoped enumerations git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147824 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-09Don't crash with -Wlarge-by-value-copy and a dependent type. PR11726.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147812 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-09Always allow redefinition of typedefs when modules are enabled. ThisDouglas Gregor
is important because it's fairly common for headers (especially system headers) to want to provide only those typedefs needed for that particular header, based on some guard macro, e.g., #ifndef _SIZE_T #define _SIZE_T typedef long size_t; #endif which is repeated in a number of headers. The guard macro protects against duplicate definitions. However, this means that only the first occurrence of this pattern actually defines size_t, so the submodule corresponding to this header has the only visible definition. If a user then imports a different submodule from the same module, size_t will be known but not visible, and therefore cannot be used. By allowing redefinition of typedefs, each header that wants to define size_t can do so independently, so it will be available in the corresponding submodules. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147775 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-09Made unknown builtin diagnostic remappable.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147774 91177308-0d34-0410-b5e6-96231b3b80d8
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