unsigned DWARFVerifier::verifyNameIndexEntries(
const DWARFDebugNames::NameIndex &NI,
const DWARFDebugNames::NameTableEntry &NTE) {
// Verifying type unit indexes not supported.
if (NI.getLocalTUCount() + NI.getForeignTUCount() > 0)
return 0;
const char *CStr = NTE.getString();
if (!CStr) {
error() << formatv(
"Name Index @ {0:x}: Unable to get string associated with name {1}.\n",
NI.getUnitOffset(), NTE.getIndex());
return 1;
}
StringRef Str(CStr);
unsigned NumErrors = 0;
unsigned NumEntries = 0;
uint32_t EntryID = NTE.getEntryOffset();
uint32_t NextEntryID = EntryID;
Expected<DWARFDebugNames::Entry> EntryOr = NI.getEntry(&NextEntryID);
for (; EntryOr; ++NumEntries, EntryID = NextEntryID,
EntryOr = NI.getEntry(&NextEntryID)) {
uint32_t CUIndex = *EntryOr->getCUIndex();
if (CUIndex > NI.getCUCount()) {
error() << formatv("Name Index @ {0:x}: Entry @ {1:x} contains an "
"invalid CU index ({2}).\n",
NI.getUnitOffset(), EntryID, CUIndex);
++NumErrors;
continue;
}
uint32_t CUOffset = NI.getCUOffset(CUIndex);
uint64_t DIEOffset = CUOffset + *EntryOr->getDIEUnitOffset();
DWARFDie DIE = DCtx.getDIEForOffset(DIEOffset);
if (!DIE) {
error() << formatv("Name Index @ {0:x}: Entry @ {1:x} references a "
"non-existing DIE @ {2:x}.\n",
NI.getUnitOffset(), EntryID, DIEOffset);
++NumErrors;
continue;
}
if (DIE.getDwarfUnit()->getOffset() != CUOffset) {
error() << formatv("Name Index @ {0:x}: Entry @ {1:x}: mismatched CU of "
"DIE @ {2:x}: index - {3:x}; debug_info - {4:x}.\n",
NI.getUnitOffset(), EntryID, DIEOffset, CUOffset,
DIE.getDwarfUnit()->getOffset());
++NumErrors;
}
if (DIE.getTag() != EntryOr->tag()) {
error() << formatv("Name Index @ {0:x}: Entry @ {1:x}: mismatched Tag of "
"DIE @ {2:x}: index - {3}; debug_info - {4}.\n",
NI.getUnitOffset(), EntryID, DIEOffset, EntryOr->tag(),
DIE.getTag());
++NumErrors;
}
auto EntryNames = getNames(DIE);
if (!is_contained(EntryNames, Str)) {
error() << formatv("Name Index @ {0:x}: Entry @ {1:x}: mismatched Name "
"of DIE @ {2:x}: index - {3}; debug_info - {4}.\n",
NI.getUnitOffset(), EntryID, DIEOffset, Str,
make_range(EntryNames.begin(), EntryNames.end()));
++NumErrors;
}
}
handleAllErrors(EntryOr.takeError(),
[&](const DWARFDebugNames::SentinelError &) {
if (NumEntries > 0)
return;
error() << formatv("Name Index @ {0:x}: Name {1} ({2}) is "
"not associated with any entries.\n",
NI.getUnitOffset(), NTE.getIndex(), Str);
++NumErrors;
},
[&](const ErrorInfoBase &Info) {
error()
<< formatv("Name Index @ {0:x}: Name {1} ({2}): {3}\n",
NI.getUnitOffset(), NTE.getIndex(), Str,
Info.message());
++NumErrors;
});
return NumErrors;
}
