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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2019-08-23 01:41:48 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2019-08-23 01:41:48 +0000 |
| commit | 148028f12f2c1ece09e75344d88d2f96aafb4d9a (patch) | |
| tree | fe95a5ff633f5688ec8d6a93362426c9b64a3b4f /lib/Sema/SemaTemplateVariadic.cpp | |
| parent | 272b5247eb1b7e7c3784b24a0dc9dc996527b0fc (diff) | |
| download | clang-148028f12f2c1ece09e75344d88d2f96aafb4d9a.tar.gz | |
PR42587: diagnose unexpanded uses of a pack parameter of a generic
lambda from within the lambda-declarator.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369722 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Sema/SemaTemplateVariadic.cpp')
| -rw-r--r-- | lib/Sema/SemaTemplateVariadic.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/Sema/SemaTemplateVariadic.cpp b/lib/Sema/SemaTemplateVariadic.cpp index f90bff6e7a..b766e3c568 100644 --- a/lib/Sema/SemaTemplateVariadic.cpp +++ b/lib/Sema/SemaTemplateVariadic.cpp @@ -313,10 +313,17 @@ Sema::DiagnoseUnexpandedParameterPacks(SourceLocation Loc, if (auto *LSI = dyn_cast<sema::LambdaScopeInfo>(Func)) { if (N == FunctionScopes.size()) { + const DeclContext *LambdaDC = LSI->CallOperator; + // While we're parsing the lambda-declarator, we don't have a call + // operator yet and the parameters instead get temporarily attached + // to the translation unit. + if (!LambdaDC) + LambdaDC = Context.getTranslationUnitDecl(); + for (auto &Pack : Unexpanded) { auto *VD = dyn_cast_or_null<VarDecl>( Pack.first.dyn_cast<NamedDecl *>()); - if (VD && VD->getDeclContext() == LSI->CallOperator) + if (VD && VD->getDeclContext() == LambdaDC) LambdaParamPackReferences.push_back(Pack); } } |