[commit] Fix new failures in break.exp

[Daniel Jacobowitz <drow@mvista.com>]

Oops, I apparently failed to run the testsuite before and after my last fork
patch.  break.exp does "catch fork; continue" and expects either the catch
to fail, or the continue to succeed and the catch never to be hit.  But
catch fork was turned into an error () in some circumstances.

This wraps the call to target_insert_fork_catchpoint in a catch_exceptions,
and disables the catchpoint if we can't insert it - which both fixes the
testsuite, and makes a lot more sense to me.  Checked in.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer

2003-06-17  Daniel Jacobowitz  <drow@mvista.com>

	* breakpoint.c (insert_catchpoint): New function.
	(insert_breakpoints): Use catch_exceptions to call
	insert_catchpoint.  Disable catchpoints if they fail to insert.

Index: breakpoint.c
===================================================================
RCS file: /cvs/src/src/gdb/breakpoint.c,v
retrieving revision 1.122
diff -u -p -r1.122 breakpoint.c
--- breakpoint.c	8 Jun 2003 18:27:12 -0000	1.122
+++ breakpoint.c	17 Jun 2003 19:07:24 -0000
@@ -703,6 +703,35 @@ read_memory_nobpt (CORE_ADDR memaddr, ch
 }
 \f
 
+/* A wrapper function for inserting catchpoints.  */
+int
+insert_catchpoint (struct ui_out *uo, void *args)
+{
+  struct breakpoint *b = (struct breakpoint *) args;
+  int val = -1;
+
+  switch (b->type)
+    {
+    case bp_catch_fork:
+      val = target_insert_fork_catchpoint (PIDGET (inferior_ptid));
+      break;
+    case bp_catch_vfork:
+      val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid));
+      break;
+    case bp_catch_exec:
+      val = target_insert_exec_catchpoint (PIDGET (inferior_ptid));
+      break;
+    default:
+      warning ("Internal error, %s line %d.", __FILE__, __LINE__);
+      break;
+    }
+
+  if (val < 0)
+    throw_exception (RETURN_ERROR);
+
+  return 0;
+}
+
 /* insert_breakpoints is used when starting or continuing the program.
    remove_breakpoints is used when the program stops.
    Both return zero if successful,
@@ -1054,32 +1083,15 @@ insert_breakpoints (void)
 	     && !b->inserted
 	     && !b->duplicate)
       {
-	val = -1;
-	switch (b->type)
-	  {
-	  case bp_catch_fork:
-	    val = target_insert_fork_catchpoint (PIDGET (inferior_ptid));
-	    break;
-	  case bp_catch_vfork:
-	    val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid));
-	    break;
-	  case bp_catch_exec:
-	    val = target_insert_exec_catchpoint (PIDGET (inferior_ptid));
-	    break;
-	  default:
-	    warning ("Internal error, %s line %d.", __FILE__, __LINE__);
-	    break;
-	  }
+	char prefix[64];
+
+	sprintf (prefix, "warning: inserting catchpoint %d: ", b->number);
+	val = catch_exceptions (uiout, insert_catchpoint, b, prefix,
+				RETURN_MASK_ERROR);
 	if (val < 0)
-	  {
-	    fprintf_unfiltered (tmp_error_stream, 
-				"Cannot insert catchpoint %d.", b->number);
-	  }
+	  b->enable_state = bp_disabled;
 	else
 	  b->inserted = 1;
-
-	if (val)
-	  return_val = val;	/* remember failure */
       }
   }