re PR c++/6706 (ICE with variable-sized arrays and DWARF-1 output)

	PR c++/6706
	* dwarfout.c (output_reg_number): Fix warning message.
	(output_bound_representation): Check SAVE_EXPR_RTL is not NULL
	before using it.

	PR c++/6706
	* g++.dg/debug/debug6.C: New test.
	* g++.dg/debug/debug7.C: New test.

From-SVN: r55264

gcc/ChangeLog

+2002-07-03  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/6706
+	* dwarfout.c (output_reg_number): Fix warning message.
+	(output_bound_representation): Check SAVE_EXPR_RTL is not NULL
+	before using it.
+	
 2002-07-05  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
 
 	* gcc/gcc.c (asm_debug): Move initialization ...

gcc/dwarfout.c

@@ -2077,7 +2077,8 @@ output_reg_number (rtl)
 
   if (regno >= DWARF_FRAME_REGISTERS)
     {
-      warning_with_decl (dwarf_last_decl, "internal regno botch: regno = %d\n",
+      warning_with_decl (dwarf_last_decl, 
+			 "internal regno botch: `%s' has regno = %d\n",
 			 regno);
       regno = 0;
     }
@@ -2294,7 +2295,8 @@ output_bound_representation (bound, dim_num, u_or_l)
 		   || TREE_CODE (bound) == CONVERT_EXPR)
 	      bound = TREE_OPERAND (bound, 0);
 
-	    if (TREE_CODE (bound) == SAVE_EXPR)
+	    if (TREE_CODE (bound) == SAVE_EXPR 
+		&& SAVE_EXPR_RTL (bound))
 	      output_loc_descriptor
 		(eliminate_regs (SAVE_EXPR_RTL (bound), 0, NULL_RTX));
 	  }

gcc/testsuite/ChangeLog

+2002-07-03  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/6706
+	* g++.dg/debug/debug6.C: New test.
+	* g++.dg/debug/debug7.C: New test.
+
 Thu Jul  4 07:36:48 2002  J"orn Rennecke <joern.rennecke@superh.com>
 
 	* gcc.c-torture/compile/simd-3.c: New test.

gcc/testsuite/g++.dg/debug/debug6.C

+// { dg-do compile }
+
+void foo()
+{
+  int i=1, x[i];
+}
+

gcc/testsuite/g++.dg/debug/debug7.C

+// { dg-do compile }
+
+void f (int);
+
+int
+main() {
+
+  int a = 4;
+  int b = 5;
+  int (*x)[b] = new int[a][b];
+
+  x[2][1] = 7;
+
+  for (int i = 0; i < a; ++i)
+    for (int j = 0; j < b; ++j)
+      f (x[i][j]);
+  delete [] x;
+}