From 8418303ce25183f479cda79de08ac0a0e1b6f77d Mon Sep 17 00:00:00 2001
From: Dave Hickin <david.hickin@diamond.ac.uk>
Date: Thu, 9 Jul 2015 13:21:45 +0100
Subject: [PATCH] Fix bug in new PVStructure::getAs function

Fix seg fault when getAs is called with a string of the form x.y (or
x_1. ... x_n.y) where x or (x1. ... .x_i) is not a structure field.

Signed-off-by: Dave Hickin <david.hickin@diamond.ac.uk>
---
 src/factory/PVStructure.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/factory/PVStructure.cpp b/src/factory/PVStructure.cpp
index 3977151..5d61056 100644
--- a/src/factory/PVStructure.cpp
+++ b/src/factory/PVStructure.cpp
@@ -170,7 +170,7 @@ PVField* PVStructure::GetAsImpl(const char *name) const
         if(*sep) {
             // this is not the requested leaf
             parent = dynamic_cast<PVStructure*>(child);
-            if(!child)
+            if(!parent)
                 throw std::runtime_error("mid-field is not a PVStructure"); //TODO: which sub field?
             child = NULL;
             name = sep+1; // skip past '.'