[PATCH] ipa/126930 - defend against non-pointers in ptr_deref_may_alias_global_p

[Richard Biener]

The following for consistency reasons defends against accessing
SSA_NAME_PTR_INFO on non-pointers which might then instead
access range info.

Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.

        PR ipa/126930
        * tree-ssa-alias.cc (ptr_deref_may_alias_global_p): Guard
        against non-pointers.
        (ptr_deref_may_alias_auto_p): Likewise.
---
 gcc/tree-ssa-alias.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/tree-ssa-alias.cc b/gcc/tree-ssa-alias.cc
index 1d10f6dbd97..7fc87b3b944 100644
--- a/gcc/tree-ssa-alias.cc
+++ b/gcc/tree-ssa-alias.cc
@@ -224,7 +224,7 @@ ptr_deref_may_alias_global_p (tree ptr, bool 
escaped_local_p)
 
   /* If we end up with a pointer constant here that may point
      to global memory.  */
-  if (TREE_CODE (ptr) != SSA_NAME)
+  if (TREE_CODE (ptr) != SSA_NAME || !POINTER_TYPE_P (TREE_TYPE (ptr)))
     return true;
 
   pi = SSA_NAME_PTR_INFO (ptr);
@@ -248,7 +248,7 @@ ptr_deref_may_alias_auto_p (tree ptr)
 
   /* If we end up with a pointer constant here that may point
      to local stack memory.  */
-  if (TREE_CODE (ptr) != SSA_NAME)
+  if (TREE_CODE (ptr) != SSA_NAME || !POINTER_TYPE_P (TREE_TYPE (ptr)))
     return true;
 
   pi = SSA_NAME_PTR_INFO (ptr);
-- 
2.51.0