* Allow API dwarf_loclist_n() and dwarf_loclist() to be called with
attributes that have form DW_FORM_sec_offset. * If the .debug_info section conforms to DWARF4, do not allow the value of attributes with form DW_FORM_data[48] to be used as section offset.
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@ -56,8 +56,20 @@ dwarf_loclist_n(Dwarf_Attribute at, Dwarf_Locdesc ***llbuf,
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switch (at->at_form) {
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case DW_FORM_data4:
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case DW_FORM_data8:
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ret = _dwarf_loclist_find(at->at_die->die_dbg,
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at->at_die->die_cu, at->u[0].u64, &ll, error);
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/*
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* DW_FORM_data[48] can not be used as section offset
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* since DWARF4. For DWARF[23], the application needs
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* to determine if DW_FORM_data[48] is representing
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* a constant or a section offset.
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*/
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if (at->at_die->die_cu->cu_version >= 4) {
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DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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}
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/* FALLTHROUGH */
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case DW_FORM_sec_offset:
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ret = _dwarf_loclist_find(dbg, at->at_die->die_cu,
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at->u[0].u64, &ll, error);
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if (ret == DW_DLE_NO_ENTRY) {
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DWARF_SET_ERROR(dbg, error, ret);
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return (DW_DLV_NO_ENTRY);
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@ -119,6 +131,19 @@ dwarf_loclist(Dwarf_Attribute at, Dwarf_Locdesc **llbuf,
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switch (at->at_form) {
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case DW_FORM_data4:
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case DW_FORM_data8:
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/*
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* DW_FORM_data[48] can not be used as section offset
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* since DWARF4. For DWARF[23], the application needs
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* to determine if DW_FORM_data[48] is representing
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* a constant or a section offset.
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*/
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if (at->at_die->die_cu->cu_version >= 4) {
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printf("called cu_version >= 4\n");
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DWARF_SET_ERROR(dbg, error, DW_DLE_NO_ENTRY);
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return (DW_DLV_NO_ENTRY);
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}
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/* FALLTHROUGH */
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case DW_FORM_sec_offset:
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ret = _dwarf_loclist_find(at->at_die->die_dbg,
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at->at_die->die_cu, at->u[0].u64, &ll, error);
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if (ret == DW_DLE_NO_ENTRY) {
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