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Date: Fri, 22 Feb 2008 06:53:00 -0000
Subject: [Bug middle-end/35292]  New: Missing Const Prop -- union fields
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From: "xinliangli at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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union U {
  struct C
   {
      char c[4];
   }cc;

   int ii;
} u ;

int foo(int i)
{
   u.ii  = 20;

   return u.cc.c[0] + u.cc.c[1];  // Const prop target -- not performed
}


-- 
           Summary: Missing Const Prop -- union fields
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: xinliangli at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35292