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2012-04-09Fix bugs found by -Wconstant-conversion improvements currently under review.David Blaikie
Specifically, using a an integer outside [0, 1] as a boolean constant seems to be an easy mistake to make with things like "x == a || b" where the author intended "x == a || x == b". The bug caused by calling SkipUntil with three token kinds was also identified by a VC diagnostic & reported by Francois Pichet as review feedback for my commit r154163. I've included test cases to verify the error recovery that was broken/poorly implemented due to this bug. The other fix (lib/Sema/SemaExpr.cpp) seems like that code was never actually reached in any of Clang's tests & is related to Objective C features I'm not familiar with, so I've not been able to construct a test case for it. Perhaps someone else can. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154325 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-06Remove "parse error" in favor of more descriptive diagnostics.David Blaikie
In a few cases clang emitted a rather content-free diagnostic: 'parse error'. This change replaces two actual cases (template parameter parsing and K&R parameter declaration parsing) with more specific diagnostics and removes a third dead case of this in the BalancedDelimiterTracker (the ctor already checked the invariant necessary to ensure that the diag::parse_error was never actually used). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154224 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-06Fix diagnostic text for r154163.David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154164 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-06Restrict fixit for missing 'class' in template template parameters.David Blaikie
Based on Doug's feedback to r153887 this omits the FixIt if the following token isn't syntactically valid for the context. (not a comma, '...', identifier, '>', or '>>') There's a bunch of work to handle the '>>' case, but it makes for a much more pleasant diagnostic in this case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154163 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-05Improve & simplify diagnostic for missing 'class' in template template ↵David Blaikie
parameter. Change suggested by Sebastian Redl on review feedback from r153887. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154102 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Correct error recovery when missing 'class' in a template template parameter.David Blaikie
The diagnostic message correctly informs the user that they have omitted the 'class' keyword, but neither suggests this insertion as a fixit, nor attempts to recover as if they had provided the keyword. This fixes the recovery, adds the fixit, and adds a separate diagnostic and corresponding replacement fixit for cases where the user wrote 'struct' or 'typename' instead of 'class' (suggested by Richard Smith as a possible common mistake). I'm not sure the diagnostic message for either the original or new cases feel very Clang-esque, so I'm open to suggestions there. The fixit hints make it fairly easy to see what's required, though. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153887 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-15When we are missing the ',' or '>' to terminate a template parameterDouglas Gregor
list, complain about it! Fixes PR7053. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116551 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Downgrade the "declaration does not declare anything" error to aDouglas Gregor
warning. It's not harmful to have such pointless declarations, and GCC does not diagnose this issue consistently. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100814 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05Teach C++ name lookup that it's okay to look in a scope without aDouglas Gregor
context. This happens fairly rarely (which is why we got away with this bug). Fixes PR6184, where we skipped over the template parameter scope while tentatively parsing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95376 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'.Daniel Dunbar
- This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91446 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-29Remove unnecessary -fms-extensions=0 from tests (this command line syntax is ↵Daniel Dunbar
going away). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90066 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-25Implement support for default template arguments of function templates.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89874 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30Improve diagnostics when parsing something likeDouglas Gregor
template<> struct foo<int> { ... }; where "foo" does not refer to a template. Fixes PR3844. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85616 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Disabling some MS extensions which cause these tests to failJohn Thompson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85236 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-08Improve checking for specializations of member classes of classDouglas Gregor
templates, and keep track of how those member classes were instantiated or specialized. Make sure that we don't try to instantiate an explicitly-specialized member class of a class template, when that explicit specialization was a declaration rather than a definition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83547 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25WIP implementation of explicit instantiation of function templates,Douglas Gregor
member functions of class template specializations, and static data members. The mechanics are (mostly) present, but the semantic analysis is very weak. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82789 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09Remove tabs, and whitespace cleanups.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Implement support for out-of-line definitions of the class members of classDouglas Gregor
templates, e.g., template<typename T> struct Outer { struct Inner; }; template<typename T> struct Outer<T>::Inner { // ... }; Implementing this feature required some extensions to ActOnTag, which now takes a set of template parameter lists, and is the precursor to removing the ActOnClassTemplate function from the parser Action interface. The reason for this approach is simple: the parser cannot tell the difference between a class template definition and the definition of a member of a class template; both have template parameter lists, and semantic analysis determines what that template parameter list means. There is still some cleanup to do with ActOnTag and ActOnClassTemplate. This commit provides the basic functionality we need, however. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76820 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Implement parsing and semantic analysis for out-of-line definitions of staticDouglas Gregor
data members of class templates. We don't instantiate the definitions yet, however. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76756 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-25Improved semantic analysis and AST respresentation for functionDouglas Gregor
templates. For example, this now type-checks (but does not instantiate the body of deref<int>): template<typename T> T& deref(T* t) { return *t; } void test(int *ip) { int &ir = deref(ip); } Specific changes/additions: * Template argument deduction from a call to a function template. * Instantiation of a function template specializations (just the declarations) from the template arguments deduced from a call. * FunctionTemplateDecls are stored directly in declaration contexts and found via name lookup (all forms), rather than finding the FunctionDecl and then realizing it is a template. This is responsible for most of the churn, since some of the core declaration matching and lookup code assumes that all functions are FunctionDecls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74213 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-24Make sure that the template parameter lists get from the parser down to ↵Douglas Gregor
ActOnFunctionDeclarator for function template definitions git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74040 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-17Diagnose class members that shadow a template parameter. FixesDouglas Gregor
<rdar://problem/6952203>. To do this, we actually remove a not-quite-correct optimization in the C++ name lookup routines. We'll revisit this optimization for the general case once more C++ is working. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73659 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-22Parse typeof-specifier the same way as sizeof/alignof are parsed.Argyrios Kyrtzidis
-Makes typeof consistent with sizeof/alignof -Fixes a bug when '>' is in a typeof expression, inside a template type param: A<typeof(x>1)> a; git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72255 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-12Refactor the parsing of declarations so that template declarations canDouglas Gregor
parse just a single declaration and provide a reasonable diagnostic when the "only one declarator per template declaration" rule is violated. This eliminates some ugly, ugly hackery where we used to require thatn the layout of a DeclGroup of a single element be the same as the layout of a single declaration. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71596 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-24Rename clang to clang-cc.Daniel Dunbar
Tests and drivers updated, still need to shuffle dirs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67602 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16Make "implicit int" an error in C++ (unless we're allowing MicrosoftDouglas Gregor
extensions). This caught a couple bugs in our test suite :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64686 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-10Implement parsing, semantic analysis and ASTs for default templateDouglas Gregor
arguments. This commit covers checking and merging default template arguments from previous declarations, but it does not cover the actual use of default template arguments when naming class template specializations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64229 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-04Basic representation of C++ class templates, from Andrew Sutton.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63750 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-28Diagnose declarations that don't declare anything, and fix PR3020.Sebastian Redl
Examples: int; typedef int; git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61454 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-24Keep track of template arguments when we parse them. Right now, we don't ↵Douglas Gregor
actually do anything with the template arguments, but they'll be used to create template declarations git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61413 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05Representation of template type parameters and non-type templateDouglas Gregor
parameters, with some semantic analysis: - Template parameters are introduced into template parameter scope - Complain about template parameter shadowing (except in Microsoft mode) Note that we leak template parameter declarations like crazy, a problem we'll remedy once we actually create proper declarations for templates. Next up: dependent types and value-dependent/type-dependent expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60597 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-02A little more scaffolding for parsing templates:Douglas Gregor
- Template parameter scope to hold the template parameters - Template parameter context for parsing declarators - Actions for template type parameters and non-type template parameters git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60387 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01Basic support for parsing templates, from Andrew SuttonDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60384 91177308-0d34-0410-b5e6-96231b3b80d8