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From: Andrew Macleod <>
Subject: [gcc r13-2786] Fix calc_op1 for undefined op2_range.
Date: Thu, 22 Sep 2022 18:49:12 +0000 (GMT)	[thread overview]
Message-ID: <> (raw)

commit r13-2786-ga7a6649f4e7c459a95dee1600554ad06aaeb1cf6
Author: Andrew MacLeod <>
Date:   Thu Sep 22 10:27:17 2022 -0400

    Fix calc_op1 for undefined op2_range.
    Unary operations pass the type of operand 1 into op1_range.  If that
    range is undefined, the routine blindly picks the type of operand 2,
    which in the case of a unary op, does not exist and traps.
            * (gimple_range_op_handler::calc_op1): Use
              operand 1 for second range if there is no operand 2.

 gcc/ | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/gcc/ b/gcc/
index f03125a0fc5..ab5b389449d 100644
--- a/gcc/
+++ b/gcc/
@@ -208,10 +208,14 @@ gimple_range_op_handler::calc_op1 (vrange &r, const vrange &lhs_range,
   // If op2 is undefined, solve as if it is varying.
   if (op2_range.undefined_p ())
-      // This is sometimes invoked on single operand stmts.
       if (gimple_num_ops (m_stmt) < 3)
 	return false;
-      tree op2_type = TREE_TYPE (operand2 ());
+      tree op2_type;
+      // This is sometimes invoked on single operand stmts.
+      if (operand2 ())
+	op2_type = TREE_TYPE (operand2 ());
+      else
+	op2_type = TREE_TYPE (operand1 ());
       Value_Range trange (op2_type);
       trange.set_varying (op2_type);
       return op1_range (r, type, lhs_range, trange);

                 reply	other threads:[~2022-09-22 18:49 UTC|newest]

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