From 72835992ec42f201ffa643313232e68ec275d9be Mon Sep 17 00:00:00 2001
From: Christoph Bergmeister <c.bergmeister@gmail.com>
Date: Wed, 9 May 2018 22:26:10 +0100
Subject: [PATCH] catch specific error for custom attribute being defined in
 other file

---
 Rules/UseShouldProcessCorrectly.cs | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/Rules/UseShouldProcessCorrectly.cs b/Rules/UseShouldProcessCorrectly.cs
index 6be9db87e..1ddd14696 100644
--- a/Rules/UseShouldProcessCorrectly.cs
+++ b/Rules/UseShouldProcessCorrectly.cs
@@ -312,17 +312,27 @@ private bool SupportsShouldProcess(string cmdName)
                 var funcInfo = cmdInfo as FunctionInfo;
                 if (funcInfo != null
                     && funcInfo.CmdletBinding
-                    && funcInfo.ScriptBlock != null
-                    && funcInfo.ScriptBlock.Attributes != null)
+                    && funcInfo.ScriptBlock != null)
                 {
-                    foreach (var attr in funcInfo.ScriptBlock.Attributes)
+                    try
                     {
-                        var cmdletBindingAttr = attr as CmdletBindingAttribute;
-                        if (cmdletBindingAttr != null)
+                        if (funcInfo.ScriptBlock.Attributes != null)
                         {
-                            return cmdletBindingAttr.SupportsShouldProcess;
+                            foreach (var attr in funcInfo.ScriptBlock.Attributes)
+                            {
+                                var cmdletBindingAttr = attr as CmdletBindingAttribute;
+                                if (cmdletBindingAttr != null)
+                                {
+                                    return cmdletBindingAttr.SupportsShouldProcess;
+                                }
+                            }
                         }
                     }
+                    catch (RuntimeException)
+                    {
+                        // The call to .Attributes on funcInfo.ScriptBlock.Attributes can throw if the attribute is custom and defined in a different file, therefore no action is being taken in this case
+                    }
+
                 }
 
                 return false;