From: Eric Botcazou <botcazou@adacore.com>
To: gcc-patches@gcc.gnu.org
Subject: Fix PR testsuite/90806 on the 9 branch
Date: Wed, 06 Jan 2021 12:14:01 +0100 [thread overview]
Message-ID: <2897833.uCpS0FXm7W@fomalhaut> (raw)
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The underlying bug was fixed by Marc in July 2019:
2019-07-10 Marc Glisse <marc.glisse@inria.fr>
* wide-int.h (wi::lshift): Reject negative values for the fastpath.
and Richard B. agreed to the backport onto the 9 branch.
Bootstrapped/regtested and applied on the 9 branch.
2021-01-06 Eric Botcazou <ebotcazou@adacore.com>
PR testsuite/90806
Backport from mainline
2019-07-10 Marc Glisse <marc.glisse@inria.fr>
* wide-int.h (wi::lshift): Reject negative values for the fastpath.
--
Eric Botcazou
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diff --git a/gcc/wide-int.h b/gcc/wide-int.h
index 25ea0545439..77aa01f2c98 100644
--- a/gcc/wide-int.h
+++ b/gcc/wide-int.h
@@ -3032,8 +3032,7 @@ wi::lshift (const T1 &x, const T2 &y)
if (STATIC_CONSTANT_P (xi.precision > HOST_BITS_PER_WIDE_INT)
? (STATIC_CONSTANT_P (shift < HOST_BITS_PER_WIDE_INT - 1)
&& xi.len == 1
- && xi.val[0] <= (HOST_WIDE_INT) ((unsigned HOST_WIDE_INT)
- HOST_WIDE_INT_MAX >> shift))
+ && IN_RANGE (xi.val[0], 0, HOST_WIDE_INT_MAX >> shift))
: precision <= HOST_BITS_PER_WIDE_INT)
{
val[0] = xi.ulow () << shift;
reply other threads:[~2021-01-06 11:14 UTC|newest]
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