re PR middle-end/32374 (internal compiler error: in…

re PR middle-end/32374 (internal compiler error: in reload_cse_simplify_operands, at postreload.c:396)

        PR middle-end/32374
        * expr.c (store_constructor): Do not clobber non-zeroed memory. 

testsuite/ChangeLog:

        PR middle-end/32374
        * gcc.dg/pr32374.c: New test.

From-SVN: r125955

gcc/ChangeLog

+2007-06-19  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR middle-end/32374
+	* expr.c (store_constructor): Do not clobber non-zeroed memory. 
+
 2007-06-22  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/32413

gcc/expr.c

@@ -5062,7 +5062,7 @@ store_constructor (tree exp, rtx target, int cleared, HOST_WIDE_INT size)
 	    cleared = 1;
 	  }
 
-	if (! cleared)
+	if (REG_P (target) && !cleared)
 	  emit_insn (gen_rtx_CLOBBER (VOIDmode, target));
 
 	/* Store each element of the constructor into the

gcc/testsuite/ChangeLog

+2007-06-22  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR middle-end/32374
+	* gcc.dg/pr32374.c: New test.
+
 2007-06-22  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR fortran/32360

gcc/testsuite/gcc.dg/pr32374.c

+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+extern int *stderr;
+
+void f (int *, const char *, ...);
+
+void g (const char *conf_name)
+{
+  typedef struct
+  {
+    const char *label;
+    const int value;
+  } Section;
+
+  const Section sections[2] = { {"", 0}, {"", 1} };
+
+  f (stderr, "", "", conf_name, 0, sections[0]);
+  f (stderr, "", "", conf_name, 0, sections[0]);
+}