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* Fix assertion failure on MaybeODRUseExprs.Manman Ren2016-02-241-0/+10
| | | | | | | | | | | | | | | | | | In VisitNonTypeTemplateParamDecl, before SubstExpr with the default argument, we should create a ConstantEvaluated ExpressionEvaluationContext. Without this, it is possible to use a PotentiallyEvaluated ExpressionEvaluationContext; and MaybeODRUseExprs will not be cleared when popping the context, causing assertion failure. This is similar to how we handle the context before SubstExpr with the default argument, in SubstDefaultTemplateArgument. Part of PR13986. rdar://24480205 Differential Revision: http://reviews.llvm.org/D17576 llvm-svn: 261803
* Only instantiate a default argument once.John McCall2016-01-061-0/+19
| | | | | | | | | | | | | | | | | | | By storing the instantiated expression back in the ParmVarDecl, we remove the last need for separately storing the sub-expression of a CXXDefaultArgExpr. This makes PCH/Modules merging quite simple: CXXDefaultArgExpr records are serialized as references to the ParmVarDecl, and we ignore redundant attempts to overwrite the instantiated expression. This has some extremely marginal impact on user-facing semantics. However, the major effect is that it avoids IRGen errors about conflicting definitions due to lambdas in the argument being instantiated multiple times while sharing the same mangling. It should also slightly improve memory usage and module file size. rdar://23810407 llvm-svn: 256983
* Sema: Subst type default template args earlierDavid Majnemer2013-08-281-0/+31
| | | | | | | | | | | | | | | | | Summary: We would not perform substitution at an appropriate point, allowing strange results to appear. We would accepts things that we shouldn't or mangle things incorrectly. Note that this hasn't fixed the other cases like template-template parameters or non-type template parameters. Reviewers: doug.gregor, rjmccall, rsmith Reviewed By: rsmith CC: cfe-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1507 llvm-svn: 189540
* Prior to adding the new "expected-no-diagnostics" directive to ↵Andy Gibbs2012-10-191-0/+1
| | | | | | VerifyDiagnosticConsumer, make the necessary adjustment to 580 test-cases which will henceforth require this new directive. llvm-svn: 166280
* Update all tests other than Driver/std.cpp to use -std=c++11 rather thanRichard Smith2011-10-131-1/+1
| | | | | | -std=c++0x. Patch by Ahmed Charles! llvm-svn: 141900
* 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
* Implement support for default template arguments of function templates.Douglas Gregor2009-11-251-0/+26
llvm-svn: 89874
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