@@ -2495,6 +2495,8 @@ internal static bool ConditionSatisfiedRegex(bool caseSensitive,
 
                     if (groups.Count > 0)
                     {
+                        Diagnostics.Assert(regex != null, "Logic above ensures regex is not null.");
+
                         Hashtable h = new Hashtable(StringComparer.CurrentCultureIgnoreCase);
 
                         foreach (string groupName in regex.GetGroupNames())
@@ -2503,6 +2505,7 @@ internal static bool ConditionSatisfiedRegex(bool caseSensitive,
                             if (g.Success)
                             {
                                 int keyInt;
+
                                 if (Int32.TryParse(groupName, out keyInt))
                                     h.Add(keyInt, g.ToString());
                                 else
Original file line number	Diff line number	Diff line change
`@@ -2495,6 +2495,8 @@ internal static bool ConditionSatisfiedRegex(bool caseSensitive,`
`2495`	`2495`
`2496`	`2496`	`if (groups.Count > 0)`
`2497`	`2497`	`{`
	`2498`	`+ Diagnostics.Assert(regex != null, "Logic above ensures regex is not null.");`
	`2499`	`+`
`2498`	`2500`	`Hashtable h = new Hashtable(StringComparer.CurrentCultureIgnoreCase);`
`2499`	`2501`
`2500`	`2502`	`foreach (string groupName in regex.GetGroupNames())`
`@@ -2503,6 +2505,7 @@ internal static bool ConditionSatisfiedRegex(bool caseSensitive,`
`2503`	`2505`	`if (g.Success)`
`2504`	`2506`	`{`
`2505`	`2507`	`int keyInt;`
	`2508`	`+`
`2506`	`2509`	`if (Int32.TryParse(groupName, out keyInt))`
`2507`	`2510`	`h.Add(keyInt, g.ToString());`
`2508`	`2511`	`else`