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From: Feng Xue OS <fxue@os.amperecomputing.com>
To: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
Subject: [PATCH] Fix value uninitialization in vn_reference_insert_pieces [PR102400]
Date: Thu, 23 Sep 2021 01:23:35 +0000	[thread overview]
Message-ID: <SN6PR01MB49588BA606C071605AD39F72F7A39@SN6PR01MB4958.prod.exchangelabs.com> (raw)

Bootstrapped/regtested on x86_64-linux.

Thanks,
Feng
---
2021-09-23  Feng Xue  <fxue@os.amperecomputing.com>

gcc/ChangeLog
	PR tree-optimization/102400
        * tree-ssa-sccvn.c (vn_reference_insert_pieces): Initialize
	result_vdef to zero value.
---
 gcc/tree-ssa-sccvn.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
index a901f51a025..e8b1c39184d 100644
--- a/gcc/tree-ssa-sccvn.c
+++ b/gcc/tree-ssa-sccvn.c
@@ -3811,6 +3811,7 @@ vn_reference_insert_pieces (tree vuse, alias_set_type set,
   if (result && TREE_CODE (result) == SSA_NAME)
     result = SSA_VAL (result);
   vr1->result = result;
+  vr1->result_vdef = NULL_TREE;
 
   slot = valid_info->references->find_slot_with_hash (vr1, vr1->hashcode,
 						      INSERT);
-- 
2.17.1


             reply	other threads:[~2021-09-23  1:23 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-23  1:23 Feng Xue OS [this message]
2021-09-23  8:35 ` Richard Biener

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