From: Julian Seward <jseward@acm.org>
Date: Thu, 27 Dec 2012 17:46:10 +0000 (+0000)
Subject: is_stack_access: don't iterate over possibly non-existent stmts.  This
X-Git-Tag: svn/VALGRIND_3_9_0~470
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bcf0ffc34153e3adfa32ef8f3da5635d36b2e8fb;p=thirdparty%2Fvalgrind.git

is_stack_access: don't iterate over possibly non-existent stmts.  This
has been observed to cause the JIT to segfault when using DRD on ARM.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13209
---

diff --git a/drd/drd_load_store.c b/drd/drd_load_store.c
index 6791555a2a..214c10cbdf 100644
--- a/drd/drd_load_store.c
+++ b/drd/drd_load_store.c
@@ -312,7 +312,7 @@ static Bool is_stack_access(IRSB* const bb, IRExpr* const addr_expr)
    if (addr_expr->tag == Iex_RdTmp)
    {
       int i;
-      for (i = 0; i < bb->stmts_size; i++)
+      for (i = 0; i < bb->stmts_used; i++)
       {
          if (bb->stmts[i]
              && bb->stmts[i]->tag == Ist_WrTmp