PR26460 UBSAN: tc-ia64.c:6107 index out of bounds
Alan Modra
amodra@gmail.com
Fri Aug 28 13:44:41 GMT 2020
PR 26460
* config/tc-ia64.c (parse_operands): Don't access past end of
idesc->operands.
diff --git a/gas/config/tc-ia64.c b/gas/config/tc-ia64.c
index f827e459df..0e60416f1b 100644
--- a/gas/config/tc-ia64.c
+++ b/gas/config/tc-ia64.c
@@ -6098,8 +6098,10 @@ parse_operands (struct ia64_opcode *idesc)
{
if (i < NELEMS (CURR_SLOT.opnd))
{
- sep = parse_operand_maybe_eval (CURR_SLOT.opnd + i, '=',
- idesc->operands[i]);
+ enum ia64_opnd op = IA64_OPND_NIL;
+ if (i < NELEMS (idesc->operands))
+ op = idesc->operands[i];
+ sep = parse_operand_maybe_eval (CURR_SLOT.opnd + i, '=', op);
if (CURR_SLOT.opnd[i].X_op == O_absent)
break;
}
--
Alan Modra
Australia Development Lab, IBM
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