re PR debug/41232 (VTA: SSA name in freelist but still referenced)

gcc/ChangeLog:
PR debug/41232
* tree-ssa-phiopt.c (minmax_replacement): Skip debug stmts
in the middle block.
gcc/testsuite/ChangeLog:
PR debug/41232
* gcc.dg/pr41232.c: New.

From-SVN: r151519

gcc/ChangeLog

+2009-09-08  Alexandre Oliva  <aoliva@redhat.com>
+
+	PR debug/41232
+	* tree-ssa-phiopt.c (minmax_replacement): Skip debug stmts
+	in the middle block.
+
 2009-09-08  Kai Tietz  <kai.tietz@onevision.com>
 
 	* tree-ssa-reassoc.c (find_operand_rank): Cast pointer

gcc/testsuite/ChangeLog

+2009-09-08  Alexandre Oliva  <aoliva@redhat.com>
+
+	PR debug/41232
+	* gcc.dg/pr41232.c: New.
+
 2009-09-08  Joseph Myers  <joseph@codesourcery.com>
 
 	* gcc.misc-tests/i386-prefetch.exp: Skip tests when multilib flags

gcc/testsuite/gcc.dg/pr41232.c

+/* { dg-do compile } */
+/* { dg-options "-O1 -g" } */
+extern int atoi (const char *);
+extern int sprintf (char *, const char *, ...);
+void malloc_init() {
+  char *cptr;
+  char buf[1];
+  int tmbd = atoi(cptr);
+  if (tmbd > 0)
+    tmbd = (tmbd <= 124) ? tmbd : 124;
+   else
+    tmbd = 0;
+   sprintf(buf, "%d\n", tmbd);
+}

gcc/tree-ssa-phiopt.c

@@ -857,7 +857,7 @@ minmax_replacement (basic_block cond_bb, basic_block middle_bb,
 
       /* Move the statement from the middle block.  */
       gsi = gsi_last_bb (cond_bb);
-      gsi_from = gsi_last_bb (middle_bb);
+      gsi_from = gsi_last_nondebug_bb (middle_bb);
       gsi_move_before (&gsi_from, &gsi);
     }