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Don't try to parse the line table when it isn't specified 

Previously we tried to parse the line table even if a compile unit
had no DW_AT_stmt_list atribute. The problem happens when a compiler
generates debug info for a compile unit but doesn't generate any line
info.

llvm-svn: 257335
This commit is contained in:
Tamas Berghammer 2016-01-11 14:56:05 +00:00
parent 1395dbdbc6
commit 1966ac36a6
1 changed files with 11 additions and 6 deletions
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17
lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
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@ -1065,12 +1065,17 @@ SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpec
const char * cu_comp_dir = resolveCompDir(cu_die.GetAttributeValueAsString(DW_AT_comp_dir, nullptr));
const dw_offset_t stmt_list = cu_die.GetAttributeValueAsUnsigned(DW_AT_stmt_list, DW_INVALID_OFFSET);
// 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);
if (stmt_list != DW_INVALID_OFFSET)
{
// 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;