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* [gcc r12-624] Change x mod 0 to produce UNDEFINED rather than VARYING.
@ 2021-05-07 19:02 Andrew Macleod
  0 siblings, 0 replies; only message in thread
From: Andrew Macleod @ 2021-05-07 19:02 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:156054e873194004161dab2f8d43dbccc5cd8f36

commit r12-624-g156054e873194004161dab2f8d43dbccc5cd8f36
Author: Andrew MacLeod <amacleod@redhat.com>
Date:   Mon Apr 26 17:46:31 2021 -0400

    Change x mod 0 to produce UNDEFINED rather than VARYING.
    
            * range-op.cc (operator_trunc_mod::wi_fold): x % 0 is UNDEFINED.

Diff:
---
 gcc/range-op.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/range-op.cc b/gcc/range-op.cc
index 0027b3e1427..ab8f4e211ac 100644
--- a/gcc/range-op.cc
+++ b/gcc/range-op.cc
@@ -2689,7 +2689,7 @@ operator_trunc_mod::wi_fold (irange &r, tree type,
   // Mod 0 is undefined.
   if (wi_zero_p (type, rh_lb, rh_ub))
     {
-      r.set_varying (type);
+      r.set_undefined ();
       return;
     }


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