* cfganal.c (flow_call_edges_add): Don't crash on noreturn call.

From-SVN: r61007

gcc/ChangeLog

+2003-01-07  Richard Henderson  <rth@redhat.com>
+
+	* cfganal.c (flow_call_edges_add): Don't crash on noreturn call.
+
 2003-01-07  Daniel Berlin  <dberlin@dberlin.org>
 
 	* cfg.c: Include alloc-pool.h

gcc/cfganal.c

 /* Control flow graph analysis code for GNU compiler.
    Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2003 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -322,10 +322,11 @@ flow_call_edges_add (blocks)
 
 	  for (e = bb->succ; e; e = e->succ_next)
 	    if (e->dest == EXIT_BLOCK_PTR)
-	      break;
-
-	  insert_insn_on_edge (gen_rtx_USE (VOIDmode, const0_rtx), e);
-	  commit_edge_insertions ();
+	      {
+		insert_insn_on_edge (gen_rtx_USE (VOIDmode, const0_rtx), e);
+		commit_edge_insertions ();
+		break;
+	      }
 	}
     }
 

gcc/testsuite/gcc.dg/20030107-1.c

+/* { dg-do compile } */
+/* { dg-options "-fprofile-arcs" } */
+
+extern void bar(void) __attribute__((noreturn));
+int foo (void) { bar(); }