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IPA_Emulation. Fix error if IPAC_MSGT_ID_GET with no tags is received

Change-Id: I69cd519cb3b8f10d10b4724e6354d31d5c5b9da5
---
M library/IPA_Emulation.ttcnpp
1 file changed, 14 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/24/34724/1

diff --git a/library/IPA_Emulation.ttcnpp b/library/IPA_Emulation.ttcnpp
index 0cd7314..7a8e8d6 100644
--- a/library/IPA_Emulation.ttcnpp
+++ b/library/IPA_Emulation.ttcnpp
@@ -415,6 +415,11 @@
 		}
 	}
 
+	/* If no Tags were present in the received IPA message, .u = omit */
+	if (not ispresent(get.u)) {
+		return resp;
+	}
+
 	for (i := 0; i < sizeof(get.u.get); i := i + 1) {
 		var IpaCcmIdTag tag := get.u.get[i].tag;
 		var charstring foo;

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