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Fixed an issue where we are asking to get the decl context for a function 

that is in a class from the expression parser, and it was causing an
assertion. There is now a function that will correctly resolve a type
even if it is in a class.

llvm-svn: 146141
This commit is contained in:
Greg Clayton 2011-12-08 05:16:30 +00:00
parent 18c7920d6b
commit cab36a3a59
2 changed files with 45 additions and 22 deletions
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44
lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
View File

@ -1614,23 +1614,42 @@ SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid)
{
DWARFCompileUnitSP cu_sp;
const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp);
if (type_die != NULL)
const bool assert_not_being_parsed = true;
return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed);
}
}
return NULL;
}
Type*
SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed)
{
if (die != NULL)
{
// We might be coming in in the middle of a type tree (a class
// withing a class, an enum within a class), so parse any needed
// parent DIEs before we get to this one...
const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu_sp.get(), type_die);
const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die);
switch (decl_ctx_die->Tag())
{
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_class_type:
ResolveType(cu_sp.get(), decl_ctx_die);
{
// Get the type, which could be a forward declaration
Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed);
// Now ask the type to complete itself if it already hasn't.
// This will make the call to ResolveType below just use the
// cached value that is already parsed for "die"
if (parent_type)
parent_type->GetClangFullType();
}
break;
default:
break;
}
return ResolveType (cu_sp.get(), type_die);
}
}
return ResolveType (cu, die);
}
return NULL;
}
@ -1858,8 +1877,10 @@ SymbolFileDWARF::ResolveType (DWARFCompileUnit* curr_cu, const DWARFDebugInfoEnt
if (type_die != NULL)
{
Type *type = m_die_to_type.lookup (type_die);
if (type == NULL)
type = GetTypeForDIE (curr_cu, type_die).get();
if (assert_not_being_parsed)
assert (type != DIE_IS_BEING_PARSED);
return type;
@ -3650,24 +3671,24 @@ SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *curr_cu, const DWARFDebu
}
clang::DeclContext *
SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *curr_cu, const DWARFDebugInfoEntry *die)
SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
{
clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
if (clang_decl_ctx)
return clang_decl_ctx;
// If this DIE has a specification, or an abstract origin, then trace to those.
dw_offset_t die_offset = die->GetAttributeValueAsReference(this, curr_cu, DW_AT_specification, DW_INVALID_OFFSET);
dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET);
if (die_offset != DW_INVALID_OFFSET)
return GetClangDeclContextForDIEOffset (sc, die_offset);
die_offset = die->GetAttributeValueAsReference(this, curr_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET);
if (die_offset != DW_INVALID_OFFSET)
return GetClangDeclContextForDIEOffset (sc, die_offset);
// This is the DIE we want. Parse it, then query our map.
ParseType(sc, curr_cu, die, NULL);
bool assert_not_being_parsed = true;
ResolveTypeUID (cu, die, assert_not_being_parsed);
clang_decl_ctx = GetCachedClangDeclContextForDIE (die);
@ -4544,6 +4565,7 @@ SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu,
m_forward_decl_clang_type_to_die[ClangASTType::RemoveFastQualifiers (clang_type)] = die;
ClangASTContext::SetHasExternalStorage (clang_type, true);
}
}
break;

1
lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h
View File

@ -279,6 +279,7 @@ protected:
uint32_t depth);
size_t ParseTypes (const lldb_private::SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool parse_siblings, bool parse_children);
lldb::TypeSP ParseType (const lldb_private::SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new);
lldb_private::Type* ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed);
lldb::VariableSP ParseVariableDIE(
const lldb_private::SymbolContext& sc,