* ubsan: tc-mips.c:9606 shift exponent 32 is too large
@ 2020-09-02 8:42 Alan Modra
0 siblings, 0 replies; only message in thread
From: Alan Modra @ 2020-09-02 8:42 UTC (permalink / raw)
To: binutils
* config/tc-mips.c (load_register): Avoid too large shift.
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 7d0d5a1991..81e2370eee 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -9603,8 +9603,11 @@ load_register (int reg, expressionS *ep, int dbl)
lo >>= 1;
++bit;
}
- lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit);
- hi >>= bit;
+ if (bit != 0)
+ {
+ lo |= (hi & ((2UL << (bit - 1)) - 1)) << (32 - bit);
+ hi >>= bit;
+ }
}
else
{
--
Alan Modra
Australia Development Lab, IBM
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