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ICU-21395 Fix UBSan breakage on 8bit of rbbi

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Frank Tang 2020-11-12 15:39:40 -08:00 • committed by Frank Yung-Fong Tang
parent a78b49bec9
commit 8251d93e82
1 changed files with 10 additions and 8 deletions
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18
icu4c/source/common/rbbitblb.cpp
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@ -1402,12 +1402,13 @@ void RBBITableBuilder::exportTable(void *where) {
U_ASSERT (sd->fAccepting <= 255);
U_ASSERT (sd->fLookAhead <= 255);
U_ASSERT (0 <= sd->fTagsIdx && sd->fTagsIdx <= 255);
row->r8.fAccepting = sd->fAccepting;
row->r8.fLookAhead = sd->fLookAhead;
row->r8.fTagsIdx = sd->fTagsIdx;
RBBIStateTableRow8 *r8 = (RBBIStateTableRow8*)row;
r8->fAccepting = sd->fAccepting;
r8->fLookAhead = sd->fLookAhead;
r8->fTagsIdx = sd->fTagsIdx;
for (col=0; col<catCount; col++) {
U_ASSERT (sd->fDtran->elementAti(col) <= kMaxStateFor8BitsTable);
row->r8.fNextState[col] = sd->fDtran->elementAti(col);
r8->fNextState[col] = sd->fDtran->elementAti(col);
}
} else {
U_ASSERT (sd->fAccepting <= 0xffff);
@ -1603,12 +1604,13 @@ void RBBITableBuilder::exportSafeTable(void *where) {
UnicodeString *rowString = (UnicodeString *)fSafeTable->elementAt(state);
RBBIStateTableRow *row = (RBBIStateTableRow *)(table->fTableData + state*table->fRowLen);
if (use8BitsForSafeTable()) {
row->r8.fAccepting = 0;
row->r8.fLookAhead = 0;
row->r8.fTagsIdx = 0;
RBBIStateTableRow8 *r8 = (RBBIStateTableRow8*)row;
r8->fAccepting = 0;
r8->fLookAhead = 0;
r8->fTagsIdx = 0;
for (col=0; col<catCount; col++) {
U_ASSERT(rowString->charAt(col) <= kMaxStateFor8BitsTable);
row->r8.fNextState[col] = static_cast<uint8_t>(rowString->charAt(col));
r8->fNextState[col] = static_cast<uint8_t>(rowString->charAt(col));
}
} else {
row->r16.fAccepting = 0;