Fix another -fprofile-arcs bug from Joseph Myers <jsm28@cam.ac.uk>.

	* profile.c (output_arc_profiler): Check next_insert_after for non
	NULL before deferencing it.

From-SVN: r15090

gcc/ChangeLog

 Thu Sep  4 15:02:27 1997  Jim Wilson  <wilson@cygnus.com>
 
+	* profile.c (output_arc_profiler): Check next_insert_after for non
+	NULL before deferencing it.
+
 	* i386/t-sol2 (TARGET_LIBGCC2_CFLAGS): Define to -fPIC.
 
 Thu Sep  4 14:51:57 1997  Jeffrey A Law  (law@cygnus.com)

gcc/profile.c

@@ -1537,12 +1537,14 @@ output_arc_profiler (arcno, insert_after)
       rtx next_insert_after = next_nonnote_insn (insert_after);
 
       /* The first insn after the call may be a stack pop, skip it.  */
-      if (GET_CODE (next_insert_after) == INSN
+      if (next_insert_after
+	  && GET_CODE (next_insert_after) == INSN
 	  && GET_CODE (PATTERN (next_insert_after)) == SET
 	  && SET_DEST (PATTERN (next_insert_after)) == stack_pointer_rtx)
 	next_insert_after = next_nonnote_insn (next_insert_after);
 
-      if (GET_CODE (next_insert_after) == INSN)
+      if (next_insert_after
+	  && GET_CODE (next_insert_after) == INSN)
 	{
 	  if (GET_CODE (PATTERN (insert_after)) == SET)
 	    return_reg = SET_DEST (PATTERN (insert_after));