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Fix expression evaluation for resolving anonymous aggregrate types with a typedefed name 

This fixes a recently reported a bug(https://llvm.org/bugs/show_bug.cgi?id=26790) relating to the clang expression evaluator no longer being able to resolve calls to
functions with arguments to typedefed anonymous structs, unions, or enums after a cleanup to the expression parsing code in r260768

This fixes the issue by attaching the tagged name to the original clang::TagDecl object when generating the typedef in lldb::ClangAstContext::CreateTypeDef.

This also fixes the issue for anonymous typedefs for non-struct types (unions and enums) where we have a tag name.


Author: Luke Drummond <luke.drummond@codeplay.com>
Differential Revision: http://reviews.llvm.org/D18099

llvm-svn: 263544
This commit is contained in:
Ewan Crawford 2016-03-15 09:50:16 +00:00
parent 22dff0aafc
commit 27fc7a7b47
1 changed files with 14 additions and 0 deletions
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14
lldb/source/Symbol/ClangASTContext.cpp
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@ -4640,6 +4640,20 @@ ClangASTContext::CreateTypedef (lldb::opaque_compiler_type_t type, const char *t
&clang_ast->Idents.get(typedef_name),
clang_ast->getTrivialTypeSourceInfo(qual_type));
clang::TagDecl *tdecl = nullptr;
if (!qual_type.isNull())
{
if (const clang::RecordType *rt = qual_type->getAs<clang::RecordType>())
tdecl = rt->getDecl();
if (const clang::EnumType *et = qual_type->getAs<clang::EnumType>())
tdecl = et->getDecl();
}
// Check whether this declaration is an anonymous struct, union, or enum, hidden behind a typedef. If so, we
// try to check whether we have a typedef tag to attach to the original record declaration
if (tdecl && !tdecl->getIdentifier() && !tdecl->getTypedefNameForAnonDecl())
tdecl->setTypedefNameForAnonDecl(decl);
decl->setAccess(clang::AS_public); // TODO respect proper access specifier
// Get a uniqued clang::QualType for the typedef decl type