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Avoid a crash when trying to parse a line table in the DWARF parser.

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llvm-svn: 167236
This commit is contained in:
Greg Clayton 2012-11-01 17:28:37 +00:00
parent 531891e980
commit da2455bd45
1 changed files with 12 additions and 10 deletions
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22
lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
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@ -961,19 +961,21 @@ SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpec
{
assert (sc.comp_unit);
DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnit(sc.comp_unit);
assert (dwarf_cu);
const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly();
if (cu_die)
if (dwarf_cu)
{
const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
const DWARFDebugInfoEntry * cu_die = dwarf_cu->GetCompileUnitDIEOnly();
// All file indexes in DWARF are one based and a file of index zero is
// supposed to be the compile unit itself.
support_files.Append (*sc.comp_unit);
if (cu_die)
{
const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, dwarf_cu, DW_AT_comp_dir, NULL);
dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET);
return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files);
// All file indexes in DWARF are one based and a file of index zero is
// supposed to be the compile unit itself.
support_files.Append (*sc.comp_unit);
return DWARFDebugLine::ParseSupportFiles(sc.comp_unit->GetModule(), get_debug_line_data(), cu_comp_dir, stmt_list, support_files);
}
}
return false;
}