+2006-02-09 Andrew Pinski <pinskia@physics.uc.edu>

+
+       * tree-flow-inline.h (var_can_have_subvars): 
+       Volatile variables should not have subvariables.
+

+2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
+
+       * gcc.c-torture/compile/volatile-1.c: New test.
+



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@110796 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 0 deletions

diff --git a/gcc/tree-flow-inline.h b/gcc/tree-flow-inline.h
index 0ae99b9f0d4..1abf556fccf 100644
--- a/gcc/tree-flow-inline.h
+++ b/gcc/tree-flow-inline.h
@@ -1463,6 +1463,10 @@ get_subvar_at (tree var, unsigned HOST_WIDE_INT offset)
 static inline bool
 var_can_have_subvars (tree v)
 {
+  /* Volatile variables should never have subvars.  */
+  if (TREE_THIS_VOLATILE (v))
+    return false;
+
   /* Non decls or memory tags can never have subvars.  */
   if (!DECL_P (v) || MTAG_P (v))
     return false;