*** old/src/cpu/sparc/vm/macroAssembler_sparc.cpp	Tue Nov  5 11:43:58 2013
--- new/src/cpu/sparc/vm/macroAssembler_sparc.cpp	Tue Nov  5 11:43:58 2013

*** 3524,3535 ****
--- 3524,3538 ----
    cmp(Rsize, G0);
    br(Assembler::greater, false, Assembler::pn, loop);
    delayed()->sub(Rtsp, Roffset, Rtsp);
  
    // Bang down shadow pages too.
!   // The -1 because we already subtracted 1 page.
    for (int i = 0; i< StackShadowPages-1; i++) {
!   // At this point, (tmp-0) is the last address touched, so don't touch it again.
+   // (It was touched as (tmp-pagesize) but then tmp was post-decremented.)
+   // Skip this address by starting at i=1, and touch a few more pages below.
+   // N.B.  It is important to touch all the down to and including i=StackShadowPages.
+   for (int i = 1; i <= StackShadowPages; i++) {
      set((-i*offset)+STACK_BIAS, Rscratch);
      st(G0, Rtsp, Rscratch);
    }
  }