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* [Concepts] Fix incorrect control flow when TryAnnotateTypeConstraint ↵Saar Raz2020-03-191-0/+1
| | | | | | | | | | | | | annotates an invalid template-id TryAnnotateTypeConstraint could annotate a template-id which doesn't end up being a type-constraint, in which case control flow would incorrectly flow into ParseImplicitInt. Reenter the loop in this case. Enable relevant tests for C++20. This required disabling typo-correction during TryAnnotateTypeConstraint and changing a test case which is broken due to a separate bug (will be reported and handled separately). (cherry picked from commit 19fccc52ff2c1da1f93d9317c34769bd9bab8ac8)
* Revert "[Concepts] Fix incorrect control flow when TryAnnotateTypeConstraint ↵Hans Wennborg2020-03-181-1/+0
| | | | | | | | | annotates an invalid template-id" We're not planning more release candidates for 10.0.0 at the moment, so reverting for now. This reverts commit 135744ce689569e7c64033bb5812572d3000239b.
* [Concepts] Fix incorrect control flow when TryAnnotateTypeConstraint ↵Saar Raz2020-03-171-0/+1
| | | | | | | | | | | | | annotates an invalid template-id TryAnnotateTypeConstraint could annotate a template-id which doesn't end up being a type-constraint, in which case control flow would incorrectly flow into ParseImplicitInt. Reenter the loop in this case. Enable relevant tests for C++20. This required disabling typo-correction during TryAnnotateTypeConstraint and changing a test case which is broken due to a separate bug (will be reported and handled separately). (cherry picked from commit 19fccc52ff2c1da1f93d9317c34769bd9bab8ac8)
* [c++20] Implement P0846R0: allow (ADL-only) calls to template-ids whoseRichard Smith2019-05-091-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | template name is not visible to unqualified lookup. In order to support this without a severe degradation in our ability to diagnose typos in template names, this change significantly restructures the way we handle template-id-shaped syntax for which lookup of the template name finds nothing. Instead of eagerly diagnosing an undeclared template name, we now form a placeholder template-name representing a name that is known to not find any templates. When the parser sees such a name, it attempts to disambiguate whether we have a less-than comparison or a template-id. Any diagnostics or typo-correction for the name are delayed until its point of use. The upshot should be a small improvement of our diagostic quality overall: we now take more syntactic context into account when trying to resolve an undeclared identifier on the left hand side of a '<'. In fact, this works well enough that the backwards-compatible portion (for an undeclared identifier rather than a lookup that finds functions but no function templates) is enabled in all language modes. llvm-svn: 360308
* Improve diagnosis of unknown template name.Richard Smith2017-05-101-3/+1
| | | | | | | | | When an undeclared identifier in a context that requires a type is followed by '<', only look for type templates when typo-correcting, tweak the diagnostic text to say that a template name (not a type name) was undeclared, and parse the template arguments when recovering from the error. llvm-svn: 302732
* [Lit Test] Updated 26 Lit tests to be C++11 compatible.Charles Li2015-11-111-1/+11
| | | | | | | Expected diagnostics have been expanded to vary by C++ dialect. RUN line has also been expanded to: default, C++98/03 and C++11. llvm-svn: 252785
* Add test case for rdar://11293995Argyrios Kyrtzidis2012-04-271-0/+31
| | | | llvm-svn: 155690
* Fix parsing of type-specifier-seq's. Types are syntactically allowed to beRichard Smith2012-03-121-2/+2
| | | | | | | | | | | | | | | | | | defined here, but not semantically, so new struct S {}; is always ill-formed, even if there is a struct S in scope. We also had a couple of bugs in ParseOptionalTypeSpecifier caused by it being under-loved (due to it only being used in a few places) so merge it into ParseDeclarationSpecifiers with a new DeclSpecContext. To avoid regressing, this required improving ParseDeclarationSpecifiers' diagnostics in some cases. This also required teaching ParseSpecifierQualifierList about constexpr... which incidentally fixes an issue where we'd allow the constexpr specifier in other bad places. llvm-svn: 152549
* Make this error less specific but also less likely to cause confusion. FixesNick Lewycky2010-11-031-4/+4
| | | | | | PR7702. llvm-svn: 118181
* Fix PR6327: restore invariants when there's a parse error in an initializer.John McCall2010-03-311-0/+18
| | | | llvm-svn: 99980
* Improve parsing and instantiation of destructor names, so that we canDouglas Gregor2010-02-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | | now cope with the destruction of types named as dependent templates, e.g., y->template Y<T>::~Y() Nominally, we implement C++0x [basic.lookup.qual]p6. However, we don't follow the letter of the standard here because that would fail to parse template<typename T, typename U> X0<T, U>::~X0() { } properly. The problem is captured in core issue 339, which gives some (but not enough!) guidance. I expect to revisit this code when the resolution of 339 is clear, and/or we start capturing better source information for DeclarationNames. Fixes PR6152. llvm-svn: 96367
* Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'.Daniel Dunbar2009-12-151-1/+1
| | | | | | | | | - 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). llvm-svn: 91446
* Replace the code that parses member access expressions after "." orDouglas Gregor2009-11-031-4/+4
| | | | | | | | | | | | "->" with a use of ParseUnqualifiedId. Collapse ActOnMemberReferenceExpr, ActOnDestructorReferenceExpr (both of them), ActOnOverloadedOperatorReferenceExpr, ActOnConversionOperatorReferenceExpr, and ActOnMemberTemplateIdReferenceExpr into a single, new action ActOnMemberAccessExpr that does the same thing more cleanly (and can keep more source-location information). llvm-svn: 85930
* Support explicit C++ member operator syntax, from James Porter!Douglas Gregor2009-08-311-0/+21
llvm-svn: 80608
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