[PATCH v3 08/19] Implement completion limiting for signal_completer.

[Keith Seitz <keiths@redhat.com>]

There are no revisions in this version.

---

This patch converts signal_completer to use add_completion
and adds some tests to cover this new behavior.

gdb/ChangeLog

	* completer.c (signal_completer): Use add_completion.

gdb/testsuite/ChangeLog

	* gdb.base/completion.exp: Add completion limiting tests
	for "handle signal".
---
 gdb/completer.c                       |    6 +++++-
 gdb/testsuite/gdb.base/completion.exp |   27 +++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/gdb/completer.c b/gdb/completer.c
index 6aa8d35..bf85efe 100644
--- a/gdb/completer.c
+++ b/gdb/completer.c
@@ -1046,7 +1046,11 @@ signal_completer (struct completer_data *cdata,
 	continue;
 
       if (strncasecmp (signame, word, len) == 0)
-	VEC_safe_push (char_ptr, return_val, xstrdup (signame));
+	{
+	  if (add_completion (cdata, &return_val, signame, NULL, NULL)
+	      == ADD_COMPLETION_MAX_REACHED)
+	    break;
+	}
     }
 
   return return_val;
diff --git a/gdb/testsuite/gdb.base/completion.exp b/gdb/testsuite/gdb.base/completion.exp
index f0b7f2c..884b9f6 100644
--- a/gdb/testsuite/gdb.base/completion.exp
+++ b/gdb/testsuite/gdb.base/completion.exp
@@ -995,6 +995,33 @@ test_completion_limit "file ./gdb.base/jit-s" \
 test_completion_limit "file ./gdb.a" "file \\\./gdb\\\.a(da|rch|sm)" \
     $max_completions
 
+# Test completion limiting in signal_completer.
+with_test_prefix "signal_completer" {
+    gdb_test_no_output "set max-completions unlimited"
+    set num_signals 0
+    gdb_test_multiple "complete handle signal SIG10" "" {
+	"complete handle signal SIG10" { exp_continue }
+	-re "handle signal SIG10\[0-9\]\r\n" {
+	    incr num_signals
+	    exp_continue
+	}
+	-re "$gdb_prompt $" {
+	    pass "count available signals"
+	}
+    }
+
+    gdb_test_no_output "set max-completions $max_completions"
+}
+
+if {$num_signals > $max_completions} {
+    test_completion_limit "handle signal SIG10" \
+	"handle signal SIG10\[0-9\]" $max_completions
+} else {
+    set msg "insufficient signals to test completion "
+    append msg "limiting in signal_handler ($num_signals)"
+    untested $msg
+}
+
 #
 # Test TUI completions
 #