diff options
Diffstat (limited to 'lib/Sema/SemaDeclCXX.cpp')
| -rw-r--r-- | lib/Sema/SemaDeclCXX.cpp | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp index 84063e5fd0..624dc5d1e6 100644 --- a/lib/Sema/SemaDeclCXX.cpp +++ b/lib/Sema/SemaDeclCXX.cpp @@ -585,11 +585,25 @@ void Sema::CheckCXXDefaultArguments(FunctionDecl *FD) { unsigned NumParams = FD->getNumParams(); unsigned p; + bool IsLambda = FD->getOverloadedOperator() == OO_Call && + isa<CXXMethodDecl>(FD) && + cast<CXXMethodDecl>(FD)->getParent()->isLambda(); + // Find first parameter with a default argument for (p = 0; p < NumParams; ++p) { ParmVarDecl *Param = FD->getParamDecl(p); - if (Param->hasDefaultArg()) + if (Param->hasDefaultArg()) { + // C++11 [expr.prim.lambda]p5: + // [...] Default arguments (8.3.6) shall not be specified in the + // parameter-declaration-clause of a lambda-declarator. + // + // FIXME: Core issue 974 strikes this sentence, we only provide an + // extension warning. + if (IsLambda) + Diag(Param->getLocation(), diag::ext_lambda_default_arguments) + << Param->getDefaultArgRange(); break; + } } // C++ [dcl.fct.default]p4: |